Finding meaning: antecedents of uncertainty in illness

In this study a portion of the uncertainty in illness model was tested. Antecedents to uncertainty tested were the stimuli frame variables of symptom pattern and event familiarity and the structure provider variables of education, social support, and credible authority. Data were collected on a convenience sample of 61 women with gynecological cancer at the time of major treatment effect. Findings supported the proposed model with an empirically generated revised model presenting the influence of antecedents on specific areas of uncertainty. Divergent paths for reducing uncertainty were found. Social support, credible authority, and event familiarity had the greatest influence on lowering the level of uncertainty. Event familiarity and credible authority were primarily effective in reducing the complexity surrounding treatment and the system of care. Social support functioned to decrease the level of ambiguity concerning the state of the illness. Findings generally support the proposed explantation for uncertainty arousal and have substantive significance in identifying the sources of stimuli leading to uncertainty arousal and modification.     

Helping patients with localized prostate carcinoma manage uncertainty and treatment side effects: nurse-delivered psychoeducational intervention over the telephone

BACKGROUND: The objective of this study was to test the efficacy of an individualized uncertainty management intervention delivered by telephone to Caucasian and African-American men with localized prostate carcinoma and directed at managing the uncertainties of their disease and treatment. METHODS: The authors delivered a psychoeducational intervention by phone to men with prostate carcinoma, with or without supplemented delivery to a close family member, that was directed at managing uncertainty and improving symptom control. One hundred thirty-four Caucasian men and 105 African-American men were assigned randomly to one of two approaches to delivering the intervention or to the control condition. Men entered the study immediately after surgical treatment or in the first 3 weeks of radiation therapy. Trained nurses delivered the intervention through weekly phone calls for 8 weeks. RESULTS: The authors found that the majority of intervention effects were from baseline to 4 months postbaseline, when treatment side effects are most intense. Both Caucasian men and African-American men who received either one of the two approaches for delivering the intervention improved in the two uncertainty management methods of cognitive reframing and problem solving. Similarly, when the intervention groups were combined, men who received the intervention also improved significantly in control of incontinence by 4 months postbaseline. Decreases in the number of treatment side effects differed by time and treatment/ ethnic group interactions as did satisfaction with sexual functioning. CONCLUSIONS: This is one of the first tests of a psychoeducational intervention among men with prostate carcinoma and was the first test that included a sufficient number of African-American men to test by ethnic group. Therefore, replication of these findings is advised.     

Uncertainty in childhood illness: a synthesis of the parent and child literature

Uncertainty has increasingly been identified as an important construct in the clinical and empirical literature on families' responses to serious childhood illnesses. Most of the work has focused on parents' perceptions of uncertainty, but several recent studies have demonstrated that children are also affected by uncertainties inherent in the illness experience. Findings from 44 reports of parental uncertainty and 12 reports of children's uncertainty were reviewed to determine what is currently known about uncertainty in the context of acute and chronic childhood illness. Pertinent conceptual and methodological issues are identified and directions for future research are suggested.     

The burden of suboptimal breastfeeding in Mexico: Maternal health outcomes and costs

Longer duration of breastfeeding is associated with a lower risk of type 2 diabetes, breast and ovarian cancer, myocardial infarction, and hypertension diseases in women. Mexico has one of the lowest breastfeeding rates worldwide; therefore, estimating the disease and economic burden of such rates is needed to influence public policy. We considered suboptimal breastfeeding when fewer than 95% of parous women breastfeed for less than 24 months per child, according to the World Health Organization recommendations. We quantified the lifetime excess cases of maternal health outcomes, premature death, disability‐adjusted life years, direct costs, and indirect costs attributable to suboptimal breastfeeding practices from Mexico in 2012. We used a static microsimulation model for a hypothetical cohort of 100,000 Mexican women to estimate the lifetime economic cost and disease burden of type 2 diabetes, breast and ovarian cancer, myocardial infarction, and hypertension in mothers, due to suboptimal breastfeeding, compared with an optimal scenario of 95% of parous women breastfeeding for 24 months. We expressed cost in 2016 USD. We used a 3% discount rate and tested in sensitivity analysis 0% and 5% discount rates. We found that the 2012 suboptimal scenario was associated with 5,344 more cases of all analysed diseases, 1,681 additional premature deaths, 66,873 disability‐adjusted life years, and 561.94 million USD for direct and indirect costs over the lifetime of a cohort of 1,116 million Mexican women. Findings suggest that investments in strategies to enable more women to optimally breastfeed could result in important health and cost savings.     

How does health literacy affect quality of life among men with newly diagnosed clinically localized prostate cancer?

BACKGROUND:

Health literacy deficits affect half of the US overall patient population, especially the elderly, and are linked to poor health outcomes among noncancer patients. Yet little is known about how health literacy affects cancer populations. The authors examined the relation between health‐related quality of life (HRQOL) and health literacy among men with prostate cancer.

METHODS:

Data analysis included 1581 men with newly diagnosed clinically localized prostate cancer from a population‐based study, the North Carolina‐Louisiana Prostate Cancer Project (PCaP). Participants completed assessment of health literacy using Rapid Estimate of Adult Literacy in Medicine (REALM) and HRQOL using the Short Form‐12 General Health Survey (SF12). Bivariate and multivariate regression was used to determine the potential association between REALM and HRQOL, while controlling for sociodemographic and illness‐related variables.

RESULTS:

Higher health literacy level was significantly associated with better mental well‐being (SF12‐Mental Component Summary [MCS]; P < .001) and physical well‐being (SF12‐Physical Component Summary [PCS]; P < .001) in bivariate analyses. After controlling for sociodemographic (age, marital status, race, income, and education) and illness‐related factors (types of cancer treatment, tumor aggressiveness, and comorbidities), health literacy remained significantly associated with SF12‐MCS scores (P < .05) but not with SF12‐PCS scores.

CONCLUSIONS:

Among patients with newly diagnosed localized prostate cancer, those with low health literacy levels were more vulnerable to mental distress than those with higher health literacy levels, but physical well‐being was no different. These findings suggest that health literacy may be important in patients managing prostate cancer and the effects of treatment, and provide the hypothesis that supportive interventions targeting patients with lower health literacy may improve their HRQOL. Cancer 2012. © 2011 American Cancer Society.     

A clinically relevant model of human pancreatic adenocarcinoma identifies patterns of metastasis associated with alterations of the TGF-beta/Smad4 signaling pathway

Genetic alterations impacting the TGF-β/Smad4 pathway are found in nearly all pancreatic adenocarcinomas, and recent reports have identified a relationship between DPC4/Smad4 expression and patient survival. In this study we use a clinically relevant animal model of pancreatic cancer to examine the impact of these genetic changes on the biology of pancreatic cancer. Methods: Using high-density oligonucleotide DNA microarray technology, a comprehensive examination of the components of the TGF-β/Smad4 pathway was performed on three human pancreatic adenocarcinoma cell lines. The in vitro and in vivo growth characteristics of these cell lines was then compared. Finally, using a clinically relevant orthotopic xenograft model of pancreatic cancer, primary tumor growth and metastases were measured for pancreatic tumors derived from each cell line. Results: Examination of the TGF-β/Smad4 pathway components identified that these three cell lines possess molecular profiles consistent with ∼90% of pancreatic adenocarcinoma tumors in patients. A significant discrepancy between in vitro and in vivo growth characteristics of each cell line was identified. When tumors from each cell line were established in nu/nu mice, each cell line exhibited distinct metastatic profiles. Data from these studies is consistent, with clinical observations concerning DPC4/Smad4 and patient outcome. Conclusion: Using an orthotopic model of tumor growth and metastasis identifies distinct metastatic profiles associated with molecular alterations of the TGF-β/Smad4 pathway and provides insight with regard to the biologic consequences of these changes.     

Patients with chronic hepatitis C undergoing watchful waiting: Exploring trajectories of illness uncertainty and fatigue

We identified trajectories of illness uncertainty in chronic hepatitis C patients and examined their association with fatigue levels during 12 months of disease monitoring without treatment (watchful waiting). Sixty‐two men and 63 women completed uncertainty and fatigue measures. Groups were formed by uncertainty scores (high, medium, and low) at baseline. Baseline fatigue levels were higher in the high uncertainty group than in the medium and low groups. Over time, uncertainty levels did not change. Fatigue levels in the low uncertainty group remained constant, increased in the medium, and decreased in the high groups. Findings suggest that uncertainty and fatigue do not remit spontaneously. Being aware of this may help nurses identify those patients needing support for these two concerns. © 2010 Wiley Periodicals, Inc. Res Nurs Health 33:465–473, 2010