Lack of association between Toll-like receptor 4 gene Asp299Gly and Thr399Ile polymorphisms and tuberculosis susceptibility: A meta-analysis

ObjectiveToll-like receptor 4 (TLR4) plays a vital role in immunity to tubercle bacillus and its gene polymorphisms are supposed to affect tuberculosis susceptibility in some rather than all studies. Then, we integrated published data and performed a comprehensive meta-analysis to get more reliable estimations for the strength of associations between TLR4 gene polymorphisms and the risk of tuberculosis.MethodsWe systematically searched the electronic PubMed database for research articles about TLR4 gene polymorphisms and tuberculosis up to February 2012. Revman 5.0 software was adopted to conduct the meta-analysis. Crude odds ratio (ORs) and 95% confidence intervals (95% CIs) were calculated by either fixed-effects model or random-effects model.ResultsFinally, six case-control studies were identified, involving 1587 controls and 2110 patients. Overall, no significant associations were found between TLR4 gene Asp299Gly polymorphism and tuberculosis in the codominant models (GG vs AA: OR = 1.56, 95% CI = 0.76–3.21, P = 0.23; GA vs AA: OR = 1.01, 95% CI = 0.84–1.23, P = 0.89), the dominant model (GG + GA vs AA: OR = 1.04, 95% CI = 0.80–1.35, P = 0.75), the recessive model (GG vs GA + AA: OR = 1.55, 95% CI = 0.75–3.19, P = 0.24) and the allele model (G vs A: OR = 1.06, 95% CI = 0.81–1.40, P = 0.66). Similarly, no significant associations between TLR4 gene Thr399Ile and tuberculosis were observed (all P > 0.05).ConclusionsThe present meta-analysis suggests that TLR4 gene Asp299Gly and Thr399Ile polymorphisms are not associated with the susceptibility of tuberculosis.     

The MTHFR C677T mutation is not a risk factor recognized for HBV-related HCC in a population with a high prevalence of this genetic marker

BackgroundPolymorphism of the methylenetetrahydrofolate reductase (MTHFR) gene can affect disease progression in HBV infection. However, the results from different reports are inconsistent. The aim of this study was to investigate the association between the MTHFR C677T polymorphism and the outcome of HBV infection in a Tianjin Han population.MethodsTaqMan SNP genotyping was employed to determine the alleles and genotypes of MTHFR C677T in 2511 subjects from various stages of HBV infection and 549 healthy controls.ResultsOf the 3060 subjects, the genotypic frequencies were CT 48.9%, TT 29.3% and CC 21.8%; the allelic frequencies were T 53.8% and C 46.2%. There was no significant difference in genotypic or allelic distribution among the different disease groups. When either healthy subjects or self-limited subjects were used as controls, the TT genotype and the T allele conferred protective effects against hepatocellular carcinoma (HCC) (HCC vs healthy subjects: OR = 0.588, 95% CI = 0.413–0.836, P = 0.003; OR = 0.768, 95% CI = 0.645–0.915, P = 0.003, respectively. HCC vs self-limited subjects: OR = 0.598, 95% CI = 0.404–0.886, P = 0.010; OR = 0.772, 95% CI = 0.635–0.940, P = 0.010, respectively). After sub-stratification by gender, the prevalence of the TT genotype or T allele was the lowest in the male HCC group (TT 23.5%, T 49.8%). The protective effects of the TT genotype and the T allele were observed in male HCC and cirrhotic subjects (HCC vs self-limited subjects: OR = 0.470, 95% CI = 0.288–0.766, P = 0.002; OR = 0.681, 95% CI = 0.535–0.866, P = 0.002, respectively. Liver cirrhosis vs self-limited subjects: OR = 0.624, 95% CI = 0.392–0.992, P = 0.046; OR = 0.791, 95% CI = 0.627–0.998, P = 0.048, respectively), but not in female. When the subjects were stratified according to the clinical features, no statistically significant difference in the genotypic distribution was observed (P > 0.05).ConclusionsThe TT genotype and T allele of MTHFR C677T may confer a protective effect on disease progression to HCC in HBV-infected individuals, especially among male patients, in a population with a high prevalence of this genetic marker.     

Facteurs sociodémographiques et recours aux soins pour raisons psychologiques chez les jeunes adultes

BackgroundAlthough young adults exhibit a high rate of psychiatric disorders, their rate of access to mental health care is low compared with older age groups. Our study examined the relationship between socio-demographic factors and the use of health care services for psychological reasons.MethodsWe studied a community sample of 1103 French 22 to 35-year-old (TEMPO cohort study) who were surveyed by mailed questionnaire in 2009. Data were collected regarding participants’ health (internalizing and externalizing psychological symptoms in 1991 and 2009), health care use (access to health professionals and psychotropic medications in case of psychological difficulties), and socio-demographic factors (sex, age, employment status, marital situation, social support). Parental history of depression was ascertained based on TEMPO participants’ and their parents’ reports (in the GAZEL cohort study).ResultsIn the 12 months preceding the study, 16.7% of study participants saw a health professional and 12.8% took a psychotropic medication for psychological reasons. In multivariate regression, models adjusted for all socio-demographic and psychological characteristics, access to health professionals was associated with being unemployed/out of the labor force (OR = 1.93; 95% CI = 1.11–3.30), family situation (OR in participants living with a partner with no children: 2.16; 95% CI 1.26–3.72; OR in participants not living with a partner: 2.29; 95% CI = 1.34–3.90), and having low social support (OR = 1.75; 95% CI = 1.21–2.54). The use of psychotropic medications was associated with female gender (OR = 2.70; 95% CI = 1.60–4.55), being unemployed/out of the labor force (OR = 3.85; 95% CI = 2.14–6.95), not living with a partner (OR = 2.04; 95% CI = 1.09–3.80) and having low social support (OR = 1.65; 95% CI = 1.05–2.59). Additionally, use of health services was associated with participants’ and their parents’ psychological difficulties.     

NRAMP1 D543N and INT4 polymorphisms in susceptibility to pulmonary tuberculosis: A meta-analysis

The association of natural resistance associated macrophage protein 1 (NRAMP1) polymorphisms (D543N, INT4) with pulmonary tuberculosis (PTB) risk have been widely reported. However, the findings of previous studies were inconsistent. To clarify the role of these polymorphisms in PTB, we performed a meta-analysis of all available and relevant published studies. Based on comprehensive searches of the PubMed, Medline, Embase, Web of Science, Elsevier Science Direct and Cochrane Library database, we identified outcome data from all articles estimating the association between NRAMP1 polymorphisms and PTB risk. For D543NA/G polymorphism, no associations were found in all genetic models. For INT4C/G polymorphism, significant increased PTB risk was observed in recessive model (CC vs. GC + GG: P = 0.025, OR = 1.35, 95% CI = 1.04–1.75). In the subgroup analysis by ethnicity, significantly increased risk were observed for D543NA/G polymorphism in Americans (GA vs. GG: P = 0.03, OR = 1.31, 95% CI = 1.03–1.67; AA + AG vs. GG: P = 0.032, OR = 1.29, 95% CI = 1.02–1.63). Moreover, the INT4C/G polymorphism was also associated with increased risk of TB for Africans in allele model (A vs. G: P = 0.012, OR = 1.41, 95% CI = 1.08–1.85), heterozygous model (GA vs. GG: P = 0.004, OR = 1.53, 95% CI = 1.14–2.04) and dominant model (AA + AG vs. GG: P = 0.007, OR = 1.49, 95% CI = 1.12–1.98). This meta-analysis provides evidences that INT4C/G was associated with increased susceptibility to pulmonary tuberculosis in overall population in recessive model. D543NA/G polymorphism was associated with PTB increased risk in Americans, while INT4C/G polymorphism in Africans. Further well-designed, large scale studies are required to confirm this conclusion.     

Menopause and metabolic syndrome in obese individuals with binge eating disorder

Menopausal transition has been associated with the emergence of metabolic abnormalities, which may increase risk for chronic medical conditions in women. This study compared metabolic function between premenopausal women (n = 152), postmenopausal women (n = 88), and men (n = 98) recruited for treatment studies for obesity co-occurring with binge eating disorder (BED), a high-risk population for developing metabolic syndrome (MetS). Postmenopausal women were more likely than premenopausal women to show elevated total cholesterol (OR = 2.75; 95% CI = 1.56–4.80) and poor glycemic control (OR = 2.92; 95% CI = 1.32–6.33) but were more likely to have lower HDL levels (OR = 0.36; 95% CI = 0.19–0.68). These became non-significant after adjusting for age. Both pre- and postmenopausal women were less likely than age-matched men to show elevated levels of triglycerides (OR = 0.27; 95% CI = 0.13–0.53 [postmenopausal], OR = 0.29; 95% CI = 0.16–0.53 [premenopausal]), blood pressure (OR = 0.48; 95% CI = 0.25–0.91 [postmenopausal], OR = 0.40; 95% CI = 0.23–0.69 [premenopausal]), and less likely to have MetS (OR = 0.41; 95% CI = 0.21–0.78 [postmenopausal], OR = 0.46; 95% CI = 0.27–0.79 [premenopausal]). Premenopausal women were also less likely to have elevated fasting glucose level (OR = 0.50; 95% CI = 0.26–0.97) than age-matched men. Among obese women with BED, aging may have a more profound impact on metabolic abnormalities than menopause, suggesting the importance of early intervention of obesity and symptoms of BED. The active monitoring of metabolic function in obese men with BED may also be critical.     

Screening for depression in an elderly population living at home. Interest of the Mini-Geriatric Depression Scale

BackgroundDepression is the most usual mental disorder in the elderly, but underdiagnosed and undertreated. Its prevalence is variable. Symptoms of depression present in the elderly can be masked and difficult to recognize. The purpose of this study was to examine prevalence and risk factors for depression in elderly living in their home.MethodsA cross-sectional study of randomly selected homes in randomly selected geographical islets was carried out Monastir City (Tunisia). Questionnaire-based interviews were conducted among the elderly aged more than 65 years living in their home. Depression symptoms were assessed using a Mini-Geriatric Depression Scale. The relationship between the risk of depression and sociodemographic and health-related variables was studied using logistic regression.ResultsOut of 598 (female 66 %, mean (SD) age 72.3 (7.4) years) elderly persons interviewed, 136 (22.7 %) were screened to have a Mini-Geriatric Depression Scale more than or equal to 1. Multiple logistic regression analysis revealed that the following were significant (P < 0.01) independent predictors of risk of depression: female sex (OR = 2.36 [95 % CI = 1.43–3.94]), having a low level of education (OR = 4.02 [95 % CI = 1.38–11.65]), disability (OR = 3.50 [95 % CI = 1.94–6.46]), a history of stroke (OR = 2.90 [95 % CI = 1.20–7.72]) and the use of hypnotic medications (OR = 2.47 [95 % CI = 1.38–4.42]).ConclusionThis study suggests that the risk of depression is a common psychiatric disorder in elderly living in their home, and underlines the usefulness of the Mini-Geriatric Depression Scale to detect the risk of depression in the elderly. This clinical approach should be encouraged in all medical practices to improve the prognosis of depression in the elderly.     

The effects of multiple coronary artery disease risk factors on subclinical atherosclerosis in a rural population in the United States

IntroductionThe risk factors for cardiovascular disease (CVD) are associated with coronary atherosclerosis and having multiple risk factors potentiates atherosclerosis. This study examined the prevalence of multiple biological and lifestyle/behavioral risk factors and their association with coronary artery calcium (CAC), a marker for subclinical coronary atherosclerosis.MethodsThis is a cross-sectional study of 1607 community-dwelling asymptomatic individuals from central Appalachia who participated in CAC screening between January 2011 and December 2012. Data on demographics (sex and age) and 7 traditional risk factors for coronary artery disease (CAD) were collected and categorized into 5 groups (0–1, 2, 3, 4, and ≥ 5). Prevalence of these risk factors and CAC scores (0, 1–99, 100–399, ≥ 400) were assessed, and the impact of the number of risk factors on CAC scores were delineated using multiple logistic regression.ResultsOver 98% of participants had ≥ 1 risk factor. While obesity, diabetes, hypertension, and family history of CAD significantly increased the odds of having CAC, CAC scores significantly increased with number of risk factors. After adjusting for demographic factors, having 3, 4, and ≥ 5 risk factors was significantly associated with increased odds of having higher CAC scores when compared to zero CAC score by more than one and half times [OR = 1.65, CI (1.20–2.25)], two times [OR = 2.32, CI (1.67–3.23)] and three times [OR = 3.45, CI (2.42–4.92)], respectively.ConclusionThe high prevalence of multiple risk factors in the study population suggests the need for aggressive multiple risk factors interventions for primary prevention of CAD, which could address CVD health disparities.     

Food environments in schools and in the immediate vicinity are associated with unhealthy food consumption among Brazilian adolescents

BackgroundEvidence of the influence of the school food environment on adolescent diet is still little explored in low- and middle-income countries. We aimed to evaluate the association between food environment in schools and the immediate vicinity and the regular consumption of unhealthy food among adolescents.MethodsWe used cross-sectional data collected by the Brazilian National Survey of School Health (PeNSE) from a representative sample of adolescents attending 9th grade public and private schools in Brazil, in 2012. We estimated students' regular consumption (> 5 days/week) of unhealthy food (soft drinks, bagged salty snacks, deep fried salty snacks and sweets) and school availability, in the cafeteria or an alternative outlet, of the same food plus some healthy options (fruit and natural fruit juice). We performed multilevel logistic regression models.ResultsHaving a cafeteria inside school selling soft drinks (private schools OR = 1.23; 95% CI = 1.14–1.33; public schools OR = 1.13; 95% CI = 1.06–1.20) and deep fried salty snacks (private schools OR = 1.41 95% CI = 1.26–1.57; public schools OR = 1.16 95% CI = 1.08–1.24) was associated with a higher consumption of these unhealthy foods of among students. In private schools, cafeteria selling fruit and natural fruit juice was associated with lower student consumption of bagged salty snacks (OR = 0.86; 95% CI 0.77–0.96) and soft drinks (OR = 0.85; 95% CI = 0.76–0.94). In addition, eating meals from the Brazilian School Food Program in public schools was associated with a lower consumption of unhealthy foods.ConclusionsFoods available in the school food environment are associated with the consumption of unhealthy food among adolescents in Brazil.     

Association of human leukocyte antigen DP/DQ gene polymorphisms with chronic hepatitis B in Chinese Han and Uygur populations

Several genome-wide association studies (GWAS) have shown that human leukocyte antigen (HLA) DP/DQ gene polymorphisms are associated with susceptibility to chronic hepatitis B virus (HBV) infection. We clarified the roles of the HLA-DP/DQ gene in HBV infection in different nationalities. Three single nucleotide polymorphisms (SNPs) in HLA-DP (rs9277471, rs9277535 and rs9277542) and the SNP rs9272346 in HLA-DQ were studied. In total, 779 patients were recruited to this study, including 400 Chinese Han and 399 Uygurs. The rs9277535 variant genotypes were directly associated with HBV persistence compared to healthy controls in an additive model of the Chinese Han population (odds ratio [OR] = 1.88, 95% confidence interval [CI] = 1.03–3.41, P = 0.040), and in a recessive model of the Chinese female population (OR = 2.02, 95% CI = 1.26–3.24, P = 0.003). In addition, rs9277471 and rs9277542 variant genotypes significantly decreased the risk of HBV infection compared to healthy controls in an additive model of the Chinese Han population (OR = 0.53, 95% CI = 0.29–0.98, P = 0.042; OR = 0.53, 95% CI = 0.29–0.97, P = 0.039) and in a dominant model of the Chinese female population (OR = 0.50, 95% CI = 0.31–0.80, P = 0.004; OR = 0.49, 95% CI = 0.31–0.79, P = 0.003). The GG genotype of rs9277346 was associated with HBV infection in the Chinese Han population (additive model: OR = 0.38, 95%CI = 017–0.82, P = 0.014; recessive model: OR = 0.41, 95% CI = 0.19–0.86, P = 0.019) and in males (additive model: OR = 0.31, 95% CI = 0.14–0.65, P = 0.002; dominant model: OR = 0.65, 95% CI = 0.43–0.97, P = 0.034; recessive model: OR = 0.36, 95% CI = 0.18–0.73, P = 0.005). In addition, allele G of rs9277346 was marginally related to a reduction in risk for HBV infection in the Uygur population. Our study suggests that HLA-DP/DQ polymorphisms can affect susceptibility and resistance to HBV infection in Chinese populations, and are possibly linked to race and sex.     

Grupos de morbilidad ajustados: características y comorbilidades de los pacientes crónicos según nivel de riesgo en Atención Primaria

AimsTo describe the characteristics of patients with chronic conditions according to their risk levels assigned by the adjusted morbidity groups (AMG). To analyse the factors associated with a high risk level and to study their effect.DesignObservational cross-sectional study with an analytical focus.LocationPrimary care (PC), Madrid Health Service.ParticipantsPopulation of 18,107 patients stratified by their risk levels with the AMG in the computerised clinical records of Madrid PC.Main measurementsThe variables studied were: socio-demographic, clinical-nursing care and use of services. Univariate, bivariate, and multivariate analysis were performed.ResultsOf the 18,107 patients, 9,866(54.4%) were identified as chronic patients, with 444 (4.5%) stratified as high risk, 1784 (18,1%) as medium risk, and 7,638 (77.4%) as low risk. The high risk patients, compared with medium and low risk, had an older mean age [77.8 (SD = 12.9), 72.1 (SD = 12.9), 50.6 (SD = 19.4)], lower percentage of women (52.3%, 65%, 61.1%), a higher number of chronic diseases [6.7 (SD = 2.4), 4.3 (SD = 1.5), 1.9 (SD = 1.1)], polymedication (79.1%, 43.3%, 6.2%), and contact with PC [33.9 (28), 21.4 (17.3), 7.9 (9.9)] (P <. 01). In the multivariate analysis, the high risk level was independently related to age > 65 [1.43 (1.03-1.99), male gender (OR = 3.46, 95% CI = 2.64-4.52), immobility (OR = 6.33, 95% CI = 4.40-9.11), number of chronic conditions (OR = 2.60, 95% CI = 2.41-2.81), and PC contact > 7 times (OR = 1.95, 95% CI = 1.36-2.80)] (P < .01).ConclusionsMore than half of the population is classified by the AMG as a chronic, and it is stratified into 3 risk levels that show differences in gender, age, functional impairment, need for care, morbidity, complexity, and use of Primary Care services. Age > 65, male gender, immobility, number of chronic conditions, and contact with PC > 7 times were the factors associated with high risk.     

Correlates between risk perceptions of cervical cancer and screening practice

ObjectivesTo identify the correlates between risk perceptions and cervical cancer screening among urban Malaysian women.MethodA cross-sectional household survey was conducted among 231 women in Petaling Jaya city in 2007. The association of risk perceptions of cervical cancer and screening practice was analyzed using Poisson regression.Results56% of the respondents ever had a Pap smear test. Knowledge of signs and symptoms (aPR = 1.11, 95% CI = 1.03–1.19), age (aPR = 1.02, 95% CI = 1.01–1.03), number of pregnancies (aPR = 1.06, 95% CI = 1.01–1.11), marital status, education level and religion were found to be significant correlates of Pap smear screening. Respondents who were never married were less likely to have had a Pap smear. Those who had no education or primary education were less likely to have had a Pap smear compared to those with degree qualification. The prevalence of screening was significantly higher among Christians and others (aPR = 1.35; 95% CI = 1.01–1.81) and Buddhists (aPR = 1.38; 95% CI = 1.03–1.84), compared to Muslims.ConclusionEliminating anecdotal beliefs as risks via targeted knowledge on established risk factors and culturally sensitive screening processes are strategic for increasing and sustaining uptake of Pap smear screening versus current opportunistic screening practices.     

Factors associated with treatment failure after advice from infectious disease specialists

ObjectiveRisk factors associated with treatment failure after the infectious disease specialist's (IDS) advice remain unknown. We aimed to identify these risk factors.MethodsWe included patients hospitalized in our tertiary care center who consulted an infectious disease specialist between January 2013 and April 2015. Treatment failure was defined by a composite criterion: signs of sepsis beyond Day 3, ICU admission, or death. Treatment success was defined by the patient's sustained clinical improvement.ResultsA total of 240 IDS recommendations were made. Diagnosis was changed for 64 patients (26.7%) and 50 patients experienced treatment failure after the IDS advice. In multivariate analysis, compliance with the IDS advice was associated with a higher rate of success (OR = 0.09, 95%CI [0.01–0.67]). Variables associated with treatment failure in the multivariate analysis were Charlson comorbidity score at admission (OR = 1.24, 95%CI [1.03–1.50]), a history of infection or colonization with multidrug-resistant bacteria (OR = 8.27, 95%CI [1.37–49.80]), and deterioration of the patient's status three days after the IDS advice (OR = 12.50, 95%CI [3.16–49.46]).ConclusionReassessing IDS recommendations could be interesting for specific patients to further adapt and improve them.     

Évolution du statut nutritionnel d’une cohorte d’enfants tunisiens au cours de l’hospitalisation : facteurs de risque de la dénutrition hospitalière

ObjectivesStudy the evolution of the nutritional status of a cohort of hospitalized children and identify the risk factors of hospital malnutrition.MethodsProspective, cross-sectional study carried out in a pediatric department over a period of six months, including all children aged ≥ 30 days, hospitalized for a period ≥ six days. Anthropometric data were assessed on admission and discharge. Food consumption was assessed using the flower tool. We identified the risk factors for hospital undernutrition (HUN) by multivariate analysis.ResultsWe included 120 patients with a mean age 46.3 months. The prevalence of acute undernutrition at admission was 21.7% and that of chronic undernutrition was 10%. The prevalence of acute undernutrition at discharge rose to 34%. Weight loss during hospitalization was noted in 68.3% of cases. The prevalence of HUN was 55% considering a decrease in BMI or P/PAT z-score ≥ 25%. The risk factors for HUN were: age ≤ 24 months (P = 0.039; OR 95% CI = 2.67 [1.05–6.82]), the presence of undernutrition on admission (P = 0.002; OR 95% CI = 2.32 [0.93–6.51]) and average food consumption < 50% during hospitalization (P < 10^?3; OR 95% CI = 6.69 [2.57–17.40]).ConclusionScreening for undernutrition on admission to hospital as well as assessment of the nutritional risk in hospitalized children is essential so that preventive or curative nutritional care can be taken.     

Risk factors associated with COVID-19 infection and mortality in nursing homes

ObjectiveThe aim of this paper was to analyse the association of demographic, clinical and pharmacological risk factors with the presence of SARS-COV-2 virus infection, as well as to know the variables related to mortality from COVID-19 in nursing home (NH) residents.DesignRetrospective case–control study. The study variables of those residents who acquired the infection (case) were compared with those of the residents who did not acquire it (control). A subgroup analysis was carried out to study those variables related to mortality.SiteNursing homes in the region of Guipúzcoa (Spain).Participants and interventions4 NHs with outbreaks of SARS-CoV-2 between March and December 2020 participated in the study. The infectivity and, secondary, mortality was studied, as well as demographic, clinical and pharmacological variables associated with them. Data were collected from the computerised clinical records.Main measurementsInfection and mortality rate. Risk factors associated with infection and mortality.Results436 residents were studied (median age 87 years (IQR 11)), 173 acquired SARS-CoV-2 (39.7%). People with dementia and Global Deterioration Scale ≥6 were less likely to be infected by SARS-CoV-2 virus [OR = 0.65 (95% CI 0.43–0.97; p < .05)]. Overall case fatality rate was 10.3% (a mortality of 26% among those who acquired the infection). COVID-19 mortality was significantly associated with a Global Deterioration Scale ≥6 (OR = 4.9 (95% CI 1.5–16.1)), COPD diagnosis (OR = 7.8 (95% CI 1.9–31.3)) and antipsychotic use (OR = 3.1 (95% CI 1.0–9.0)).ConclusionsAdvanced dementia has been associated with less risk of SARS-CoV-2 infection but higher risk of COVID-19 mortality. COPD and chronic use of antipsychotics have also been associated with mortality. These results highlight the importance of determining the stage of diseases such as dementia as well as maintaining some caution in the use of some drugs such as antipsychotics.     

Patients at elevated risk of melanoma: Individual predictors of non-compliance to GP referral for a dermatologist consultation

ObjectiveThe aim of this study is to assess whether patients at elevated risk of melanoma attended a dermatologist consultation after a General Practitioner referral and to determine individual predictors of non-compliance.MethodThis survey included 1506 high-risk French patients (selected using the Self-Assessment Melanoma Risk Score) referred to a dermatologist between April and October 2011.Compliance was evaluated from January to April 2012, based on attendance at a dermatologist consultation (or scheduling an appointment).Demographic data and factors mapping the Health Belief Model were tested as correlates using a multivariate logistic regression.ResultsCompliance with referral was 58.4%. The top seven factors associated with non-compliance were as follows: GP advice to consult was unclear (OR = 13.22; [7.66–23.56]); no previous participation in cancer screenings, including smear tests (OR = 5.03; [2.23–11.83]) and prostate screening (OR = 2.04; [1.06–3.97]); lack of knowledge that melanoma was a type of cancer (OR = 1.94; [1.29–2.92]); and reporting no time to make an appointment (OR = 2.08; [1.82–2.38]), forgetting to make an appointment (OR = 1.26; [1.08–1.46]), long delays in accessing an appointment (OR = 1.25; [1.12–1.41]), not being afraid of detecting something abnormal (OR = 1.54; [1.35–1.78]), no need to consult a dermatologist to feel secure (OR = 1.28; [1.09–1.51]).ConclusionPhysicians should be aware of the factors predicting patient compliance with referrals for dermatologist consultations; better General Practitioner counseling might enhance compliance in high-risk populations.     

Young adults with depression are at increased risk of sexually transmitted disease

Sexually transmitted diseases (STDs) and depression impact millions of individuals each year in the United States, with direct medical costs exceeding $41 billion. While the interactions of these conditions are poorly understood, they are increasingly addressed in primary care whereas historically they have been addressed separately. We analyzed data associated with the 18–25 year age group from the 2014 National Survey of Drug Use and Health, a cross-sectional survey of the civilian, non-institutionalized US population aged ≥ 12 years for factors associated with past year diagnosis of STD (STDy). Independent variables included participant demographics; lifetime diagnosis of major depressive episode (MDE); participant behaviors associated with STD risk (patient-provided); and medical record data associated with mental illness treatment (clinically-observed). Of 18,142 participants, the prevalence of MDE and STD was 15.3% and 2.4%, respectively, with significant differences by gender and race. MDE was associated with increased risk of STDy among females (odds ratio [OR] = 1.61; 95% confidence interval [CI] = 1.18–2.20), males (OR = 2.32; CI = 1.15–4.70), those of white race (OR = 3.02; CI = 2.02–4.53), and lower income levels and insurance status. Univariate modeling found that receiving mental health treatment, and use of marijuana, alcohol, and illegal drugs were each associated with significantly increased STDy. In a multivariate logistic regression, receiving mental health treatment became protective for STDy (AOR = 0.55; CI = 0.32–0.95]). Individuals with a history of depression are at increased risk of STDy, with this risk modified by factors readily ascertained within primary care. As depression treatment is increasingly incorporated into primary care there are means to more effectively target intervention resources.     

Immigration Measures and Reproductive Health Among Hispanic Youth: Findings from the National Longitudinal Survey of Youth, 1997–2003

PurposeTo explore relationships between immigration measures and risk of reproductive and sexual events among U.S. Hispanic adolescents.MethodsWe examined generation status, language in the home and country of origin in relation to sexual activity, contraception, and childbearing among 1614 Hispanic adolescents, using nationally representative 1997–2003 longitudinal data. Multivariable analyses controlled for potentially confounding variables. Tests for effect modification by gender and Mexican origin were conducted.ResultsFewer first generation adolescents transitioned to sexual intercourse before age 18 (odds ratio [OR] = .80, 95% confidence interval [CI] = .66–.98) and fewer first and second generation sexually active teens used contraceptives consistently at age 17 (OR = .32, 95% CI = .17–.60 and OR = .50, 95% CI = .31–.80, respectively) than third-generation teens. Language was similarly associated with the transition to sexual intercourse and contraceptive practices. Versus teens of Mexican origin, teens of Puerto Rican origin and origins other than Cuba and Central/South America had greater odds of becoming sexually active; youth of all origins except Central/South America had fewer multiple live births (OR = .14–.31). Gender modified the effects of generation on consistent use of contraceptives and condoms at age 17. Gender also modified the effect of country of origin on transitioning to sexual intercourse before age 18 years.ConclusionsResults expand on previous observations that generation, language, and country of origin are predictors of reproductive and sexual risks for Hispanic adolescents. These immigration measures may therefore be useful in targeting community and clinical preventive services.     

A most stubborn bias: no adjustment method fully resolves confounding by indication in observational studies

ObjectiveTo evaluate the effectiveness of methods that control for confounding by indication, we compared breast cancer recurrence rates among women receiving adjuvant chemotherapy with those who did not.Study Design and SettingIn a medical record review-based study of breast cancer treatment in older women (n = 1798) diagnosed between 1990 and 1994, our crude analysis suggested that adjuvant chemotherapy was positively associated with recurrence (hazard ratio [HR] = 2.6; 95% confidence interval [CI] = 1.9, 3.5). We expected a protective effect, so postulated that the crude association was confounded by indications for chemotherapy. We attempted to adjust for this confounding by restriction, multivariable regression, propensity scores (PSs), and instrumental variable (IV) methods.ResultsAfter restricting to women at high risk for recurrence (n = 946), chemotherapy was not associated with recurrence (HR = 1.1; 95% CI = 0.7, 1.6) using multivariable regression. PS adjustment yielded similar results (HR = 1.3; 95% CI = 0.8, 2.0). The IV-like method yielded a protective estimate (HR = 0.9; 95% CI = 0.2, 4.3); however, imbalances of measured factors across levels of the IV suggested residual confounding.ConclusionConventional methods do not control for unmeasured factors, which often remain important when addressing confounding by indication. PS and IV analysis methods can be useful under specific situations, but neither method adequately controlled confounding by indication in this study.     

Effets de la contamination chronique à l’uranium sur la mortalité : bilan d’une étude-pilote chez les travailleurs de l’industrie nucléaire en France

BackgroundThis article presents the mortality data compiled among a cohort of workers at risk of internal uranium exposure and discusses the extent to which this exposure might differentiate them from other nuclear workers.MethodsThe cohort consisted of 2897 Areva-NC-Pierrelatte plant workers, followed from 1st January 1968 through 31st December 2006 (79,892 person-years). Mortality was compared with that of the French population, by calculating Standardized Mortality Ratios (SMR) and 95 % confidence intervals (CI_95 %). External radiation exposure was reconstructed using external dosimetry archives. Internal uranium exposure was assessed using a plant-specific job-exposure-matrix, considering six types of uranium compounds according to their nature (natural and reprocessed uranium [RPU] and solubility [fast-F, moderate-M, and slow-S]). Exposure-effect analyses were performed for causes of death known to be related to external radiation exposure (all cancers and circulatory system diseases) and cancer of uranium target-organs (lung and hematopoietic and lymphatic tissues, HLT).ResultsA significant deficit of mortality from all causes (SMR = 0.58; CI_95 % [0.53–0.63]), all cancers (SMR = 0.72; CI_95 % [0.63–0.82]) and smoking related cancers was observed. Non-significant 30 %-higher increase of mortality was observed for cancer of pleura (SMR = 2.32; CI_95 % [0.75–5.41]), rectum and HLT, notably non-Hodgkin's lymphoma (SMR = 1.38; CI_95 % [0.63–2.61]) and chronic lymphoid leukemia (SMR = 2.36; CI_95 % [0.64–6.03]). No exposure-effect relationship was found with external radiation cumulative dose. A significant exposure-effect relationship was observed for slowly soluble uranium, particularly RPU, which was associated with an increase in mortality risk reaching 8 to 16 % per unit of cumulative exposure score and 10 to 15 % per year of exposure duration.ConclusionThe Areva-NC-Pierrelatte workers cohort presents a non-significant over-mortality from HLT cancers, notably of lymphoid origin, unrelated to external radiation exposure. The pilot study suggests an association between mortality from the HLT and lung cancers and exposure to slowly soluble RPU compounds. The results of this study should be investigated further in more powerful studies, with a dose-response analysis based on individual assessment of uranium absorbed dose to uranium-target organs.     

The 23-valent pneumococcal polysaccharide vaccine is effective in elderly adults over 75 years old—Taiwan's PPV vaccination program

BackgroundPneumococcal infection is a serious cause of mortality and morbidity in the elderly. A nationwide pneumococcal polysaccharide vaccine (PPV) program for elderly adults aged 75 years and older was conducted in Taiwan in 2008. The efficacy of the PPV in this very elderly population was evaluated.MethodsThe data were analyzed using the Taiwan National Health Insurance Research Database (NHIRD), the cause-of-death registration database and the invasive pneumococcal disease (IPD) notification database of Taiwan's Ministry of Health and Welfare. The efficacy of PPV administration in this very elderly population was evaluated using multivariate logistic regression after propensity score matching (PSM). The rates of IPD, death from IPD, pneumonia hospitalization, death from pneumonia, and all-cause mortality were compared for those who did and did not receive the PPV.ResultsAmong the 1078,955 eligible people, 318,257 (29.5%) received the PPV, and 760,698 (70.5%) were not vaccinated. Using PSM to adjust for confounding factors, including age, gender, influenza vaccination status, associated chronic diseases and health care utilization, those who received the PPV had significantly lower odds ratios (ORs) for IPD (OR = 0.24, 95% CI = 0.123–0.461, p < 0.001), death from IPD (OR = 0.09, 95% CI = 0.011–0.704, p < 0.022, p < 0.001), pneumonia hospitalization (OR = 0.40, 95% CI = 0.395–0.415, p < 0.001), death from pneumonia (OR = 0.07, 95% CI = 0.059–0.082, p < 0.001), and all-cause mortality (OR = 0.07, 95% CI = 0.069–0.072, p < 0.001) compared with those who were not vaccinated.ConclusionsPPV vaccination in the previous year was associated with a 60% reduction in pneumonia hospitalization, a 76% reduction in IPD, and a greater than 90% reduction in death from pneumonia, IPD and all causes among people over 75 years old in Taiwan. Data from subsequent years in Taiwan and similar populations elsewhere are needed to evaluate the contribution of underlying variations in the mortality rate and the confounding effects of prior disease severity to these findings.