Are Farm‐to‐School Programs More Common in States With Farm‐to‐School‐Related Laws?

BACKGROUND: Farm‐to‐School programs (FTSPs) connect schools with locally grown food. This article examines whether FTSPs are more common in public elementary schools (ESs) in states with a formal, FTSP law or with a related, locally grown procurement law. METHODS: A pooled, cross‐sectional analysis linked nationally representative samples of 1872 public ESs (across 47 states) for the 2006–2007, 2007–2008, and 2008–2009 school years with state laws effective as of the beginning of September of each year that were collected and analyzed for all states. Multivariate logistic regression models examined the impact of state law on school FTSP participation, controlling for year and school‐level race/ethnicity, region, locale, free‐reduced lunch participation, and school size. RESULTS: The percentage of schools located in a state with a FTSP‐specific law increased from 7.3% to 20.4% over the 3‐year period, while the percentage of schools located in a state with a locally grown procurement law was approximately 30% across all years. The percentage of schools with FTSPs has more than tripled over the last 3 years (from 4.9% to 17.7%). After adjusting for all covariates except year, FTSPs were significantly more likely in states with a FTSP‐specific law (OR = 2.45, 95% CI = 1.28‐4.67); once adjusting for year, the results were marginally significant (OR = 1.72, 95% CI = .91‐3.25). School‐level FTSPs were not related to state locally grown procurement laws. CONCLUSION: Although the percentage of schools with FTSPs is relatively small, these programs are becoming more common, particularly in states with FTSP‐specific laws.     

When does quality‐adjusting life‐years matter in cost‐effectiveness analysis?

PURPOSE: This paper investigates the impact of quality-of-life adjustment on cost-effectiveness analyses, by comparing ratios from published studies that have reported both incremental costs per (unadjusted) life-year and per quality-adjusted life-year for the same intervention. METHODS: A systematic literature search identified 228 original cost-utility analyses published prior to 1998. Sixty-three of these analyses (173 ratio pairs) reported both cost/LY and cost/QALY ratios for the same intervention, from which we calculated medians and means, the difference between ratios (cost/LY minus cost/QALY) and between reciprocals of the ratios, and cost/LY as a percentage of the corresponding cost/QALY ratio. We also compared the ratios using rank-order correlation, and assessed the frequency with which quality-adjustment resulted in a ratio crossing the widely used cost-effectiveness thresholds of 20, 000 US dollars, 50,000 US dollars, and 100,000 US dollars/QALY or LY. RESULTS: The mean ratios were 69,100 US dollars/LY and 103,100 US dollars/QALY, with corresponding medians of 24,600 US dollars/LY and 20,400 US dollars/QALY. The mean difference between ratios was approximately -34,300 US dollars (median difference: 1300 US dollars), with 60% of ratio pairs differing by 10,000 US dollars/year or less. Mean difference between reciprocals was 59 (QA)LYs per million dollars (median: 2.1). The Spearman rank-order correlation between ratio types was 0.86 (p<0.001). Quality-adjustment led to a ratio moving either above or below 50,000 US dollars/LY (or QALY) in 8% of ratio pairs, and across 100,000 US dollars in 6% of cases. CONCLUSIONS: In a sizable fraction of cost-utility analyses, quality adjusting did not substantially alter the estimated cost-effectiveness of an intervention, suggesting that sensitivity analyses using ad hoc adjustments or 'off-the-shelf' utility weights may be sufficient for many analyses. The collection of preference weight data should be subjected to the same scrutiny as other data inputs to cost-effectiveness analyses, and should only be under-taken if the value of this information is likely to be greater than the cost of obtaining it.     

The increase in very‐low‐birthweight infants in Germany: artefact or reality?

Earlier findings have shown that after unification with the Federal Republic of Germany (FRG) in October 1990 the proportion of very-low-birthweight infants in the former German Democratic Republic (GDR) increased. This study seeks to explore this observation in more detail at the regional level. The analysis of aggregate data of live births in Germany between 1991 and 1997 shows an increasing proportion of very-low-birthweight infants as well as a general trend towards heavier babies in both east and west. The growing proportion of live born infants at very low birthweights in the east, however, seems to be due, in part, to increased registration, most likely reflecting the introduction of the more comprehensive (western) definition of a live birth with unification in October 1990. A fairly distinct east-west pattern in the birthweight distribution present in 1991 had almost disappeared by 1997 and given way to a north-south one.     

Performance‐based contracting in home‐care work in The Netherlands: professionalism under pressure?

Our aim was to improve the understanding of the relationships between performance‐based contracting, management supportiveness and professionalism in home care. Using path analysis, this article explores the relationships between home‐care workers' perceptions of management support, implementation of performance‐based contracting (i.e. use of strict time registration rules and cost‐efficiency measures) and autonomy and intrinsic job satisfaction. We hypothesised that: use of strict time registration rules and cost‐efficiency measures relates to lower levels of autonomy and intrinsic job satisfaction (H1); there is an indirect relationship between use of strict time registration rules and use of cost‐efficiency measures and intrinsic job satisfaction via autonomy (H2); higher levels of management support relate to the use of looser time registration rules and less use of cost‐efficiency measures (H3); and higher levels of management support relate to higher levels of autonomy and intrinsic job satisfaction (H4). We used data from a cross‐sectional survey conducted in 2010 of a sample of Dutch home‐care workers (N = 156, response rate = 34%). Overall, our study suggests that the consequences of performance‐based contracting for professionalism are ambiguous. More specifically, using strict time registration rules is related to lower levels of autonomy, whereas using cost‐efficiency measures does not seem to affect autonomy (H1). Performance‐based contracting has no consequences for the level of fulfilment home‐care workers find in their job, as neither of the two contracting dimensions measured was directly or indirectly related to intrinsic job satisfaction (H1, H2). The role of managers must be taken into account when studying performance‐based contracting, because perceived higher management support is related to managers' less frequent use of both strict time registration rules and of cost‐efficiency measures (H3). The insight we gained into the importance of supportive managers for both autonomy and job satisfaction (H4) can help home‐care organisations improve the attractiveness of home‐care work.     

How does cost matter in health‐care discrete‐choice experiments?

Willingness‐to‐pay (WTP) estimates derived from discrete‐choice experiments (DCEs) generally assume that the marginal utility of income is constant. This assumption is consistent with theoretical expectations when costs are a small fraction of total income. We analyze the results of five DCEs that allow direct tests of this assumption. Tests indicate that marginal utility often violates theoretical expectations. We suggest that this result is an artifact of a cognitive heuristic that recodes cost levels from a numerical scale to qualitative categories. Instead of evaluating nominal costs in the context of a budget constraint, subjects may recode costs into categories such as ‘low’, ‘medium’, and ‘high’ and choose as if the differences between categories were equal. This simplifies the choice task, but undermines the validity of WTP estimates as welfare measures. Recoding may be a common heuristic in health‐care applications when insurance coverage distorts subjects' perception of the nominal costs presented in the DCE instrument. Recoding may also distort estimates of marginal rates of substitution for other attributes with numeric levels. Incorporating ‘cheap talk’ or graphic representation of attribute levels may encourage subjects to be more attentive to absolute attribute levels. Copyright © 2010 John Wiley & Sons, Ltd.     

Embodiment without bodies? Analysis of embodiment in US‐based pro‐breastfeeding and anti‐male circumcision movements

This article uses the cases of pro‐breastfeeding and anti‐circumcision activism to complicate the prevailing conceptualisation of embodiment in research on embodied health movements (EHMs). Whereas most EHM activists draw on their own bodily experiences, in the breastfeeding and circumcision movements, embodiment by proxy is common. Activists use embodiment as a strategy but draw on physical sensations that they imagine for other people's bodies, rather than on those they experience themselves. Pro‐breastfeeding activists, who seldom disclose whether they were themselves breastfed, target mothers, encouraging them to breastfeed rather than to formula feed their children in order to reduce their child's risk of disease. Anti‐circumcision activists, only some of whom are circumcised men, urge parents to leave their sons' penises intact in order to avoid illness and disfigurement and to preserve the sons' rights to make their own informed decisions as adults. In both movements activists use embodiment as a persuasive strategy even though they themselves do not necessarily embody the risks of the negative health outcomes with which they are concerned. Future research on EHMs should reconceptualise EHMs to include embodiment by proxy and examine whether this important phenomenon systematically affects movement strategies and outcomes.     

The ‘expert’ in problem‐based and case‐based learning: necessary or not?

BACKGROUND: Problem-based learning (PBL) and other small-group teaching methods which incorporate principles of adult learning, are exciting innovations in medical education. In the application of these methods to medical curricula many schools have introduced non-expert tutors. However, research evaluating the effectiveness of non-expert lead teaching has been inconclusive. AIM: The present study aim was to compare the outcome of teaching in small groups facilitated by either an 'expert' or a 'non-expert' tutor, in a single topic area. METHOD: Fourth-year medical students were allocated randomly to teaching of eating disorders either by a non-expert or an expert tutor. Outcomes were evaluated by (i) a knowledge test, and (ii) self-report ratings by tutors and students of their learning methods and other qualities. RESULTS: The study found that while the non-expert tutor was rated more highly for her group management skills, and she also rated her students more highly in the area of oral communication, students who were taught by the expert scored higher in the end-of-course test in the topic area. CONCLUSION: The findings suggest that caution should be exercised, and the need for more research before widespread adoption of teaching by non-expert tutors.     

Nutrition support in the critical care setting: current practice in canadian ICUs‐‐opportunities for improvement?

BACKGROUND: The purpose of this project was to describe current nutrition support practice in the critical care setting and to identify interventions to target for quality improvement initiatives. METHODS: We conducted a cross-sectional national survey of dietitians working in intensive care units (ICUs) across Canada to document various aspects of nutrition support practice. RESULTS: Of the 79 dietitians sent study materials, 66 responded (83%). Sixteen of 66 sites (24.2%) reported the presence of a nutrition support team, and 35 of 66 (53%) used a standard enteral feeding protocol. Dietitians retrospectively abstracted data from charts of all patients in the ICU on April 18, 2001. Of 702 patients, 313 (44.6%) received enteral nutrition only, 50 (7.1%) received parenteral nutrition only, 60 (8.5%) received both, and 279 (39.7%) received no form of nutrition support. Enteral nutrition was initiated on 1.6 days (median) after admission to ICU; 10.7% of patients were initiated on day 1. Of those receiving any form of nutrition support, on average, patients received 58% of their prescribed amounts of calories and protein over the first 12 days in the ICU. Of all days on enteral feeds, patients received feeds into the small bowel on 381 of 2321 (16.4%) days. The mean head of the bed elevation for all patients was 30 degrees. Controlling for differences in patient characteristics, site factors contributing the most successful application of nutrition support included the amount of funded dietitians per ICU bed, size of ICU, and the fact that the ICU was located in an academic setting. CONCLUSIONS: A significant number of critically ill patients did not receive any form of nutrition support for the study period. Those that did receive nutrition support did not meet their prescribed energy or protein needs, especially earlier in the course of their illness. Significant opportunities to improve provision of nutrition support to critically ill patients exist.     

Genetic diversity of Influenza B virus in 2009–2010 and 2010–2011 in Tunisia

Objective

The authors had for aim to characterize influenza B strains having circulated in Tunisia to identify new mutations and compare them with reference strains.

Methods

The epidemiological surveillance of influenza allowed identifying 19 patients with symptoms related to respiratory infection, who had been infected by influenza B strains isolated in several regions of Tunisia in 2009–2010 and in 2010–2011. Laboratory identification and detection of mutations in the segment encoding hemagglutinin of influenza viruses was performed by real time PCR and sequencing.

Results

The two influenza B Tunisian strains of the 2009–2010 season belonged to the Victoria lineage, whereas 2010–2011 season strains belonged to B/Victoria/2/87 and B/Yamagata/16/88 lineages with a dominance of the Yamagata lineage (76%). This study allowed identifying amino acid substitutions: T121A, S150I, N165Y, T181A, G183R, D196N, S229D, M251V and K253R in the B/Yamagata lineage; L58P, N75K, K109N, N165K, S172P and K257R into the B/Victoria lineage. These mutations were specific of Tunisian groups of variants. Most influenza B-Yamagata lineage viruses (69%) were associated with severe cases.

Conclusion

Molecular analysis of the various influenza B strains circulating in Tunisia is useful to detect new mutations that can modify the phenotype of influenza strains.     

What explains away the increased risk of histological chorioamnionitis in African‐American mothers of very‐low‐birthweight infants?

We sought explanations for African-American mothers' increased risk of chorioamnionitis by sequentially adjusting for confounder variables both individually and in groups. We searched for a subset of covariates that had the most influence on the chorioamnionitis odds ratio (OR) of these women. The sample consisted of 305 African-American and 520 White mothers who gave birth to a very-low-birthweight (< or = 1500 g) infant between 1991 and 1993, whose placenta was examined according to protocol and whose hospital chart was reviewed. Histologically proven chorioamnionitis was present in 43% of the placentas from African-American women and in 27% of those from Whites (crude OR 2.1, 95% confidence interval 1.5, 2.8). Singleton status appeared to be the most important effect modifier, with significant crude ORs of 1.5 among singletons and 3.4 among non-singletons. Using logistic regression models in the whole sample and in subgroups, we sought to 'explain away' this increased risk. Indeed, addition of information about confounder variables resulted in considerable reduction in the ORs to 1.1 among singletons and 1.9 among non-singletons. Particularly important among the confounders were singleton birth, Medicaid insurance, duration of ruptured membranes and gestational age. We discuss the possibility that this set of confounding variables conveys, in part, the same information as the variable African-American, and also perhaps information about the availability and/or utilisation of prenatal health care.     

Cost‐effectiveness analysis based on the number‐needed‐to‐treat: common sense or non‐sense?

This paper explores and critically discusses some of the methodological limitations of using the number-needed-to-treat (NNT) in economic evaluation. We argue that NNT may be a straightforward measure of benefit when the effect of an intervention is immediate, but that serious problems arise when the effect is delay rather than avoidance of an adverse event. In this case, NNT is not a robust or accurate measure of effect, but will vary considerably and inconsistently over time. This weakness will naturally spill over onto any CEA based on NNT. A literature review demonstrated that CEAs based on NNT were all published within the last five years, and that all studies suffered from important limitations. A major weakness of using NNT is the imposed restrictions on the outcome measure, which can only be strictly uni-dimensional and non-generic. Using NNT in economic evaluations is obtained at a cost in terms of both methodological shortcomings, and a reduced ability for such evaluations to serve as a useful tool in decision making processes. The use of NNT in economic evaluations might be better avoided.To every complicated question, there is a simple, straightforward, easy--and probably wrong answer (Occam's Sledgehammer).     

Pairwise non‐parametric non‐inferiority tests in 3 × 3 cross‐over trials: should we adjust for period?

Before an active compound can be registered as a drug, it needs to be demonstrated that it does not cause particular unwanted compound specific side effects. Demonstrating non-inferiority of an active drug with placebo with respect to an unwanted side effect is often based on pharmacodynamic 3 x 3 cross-over trials, with the third treatment arm consisting of a positive control. The main comparison then is the pairwise comparison between active drug and placebo. In this paper, two different non-parametric methods with adjustment for period effect are compared with the non-parametric non-adjusted test and the parametric period-adjusted test with respect to size and power. The non-parametric test with period adjustment based on rank alignment has generally the largest power, but its size exceeds the nominal significance level. The non-parametric test with period adjustment based on stratification has low power for trials with a small number of subjects. The non-parametric test without period adjustment is a valid alternative in such cases, but its power decreases substantially in the presence of period effects. In the case of unbalanced designs, however, only the non-parametric test with period adjustment based on stratification can be used.     

Is the doctrine of double effect irrelevant in end‐of‐life decision making?

In this paper, we consider three arguments for the irrelevance of the doctrine of double effect in end‐of‐life decision making. The third argument is our own and, to that extent, we seek to defend it. The first argument is that end‐of‐life decisions do not in fact shorten lives and that therefore there is no need for the doctrine in justification of these decisions. We reject this argument; some end‐of‐life decisions clearly shorten lives. The second is that the doctrine of double effect is not recognized in UK law (and similar jurisdictions); therefore, clinicians cannot use it as the basis for justification of their decisions. Against this we suggest that while the doctrine might have dubious legal grounds, it could be of relevance in some ways, e.g. in marking the boundary between acceptable and unacceptable practice in relation to the clinician's duty to relieve pain and suffering. The third is that the doctrine is irrelevant because it requires there to be a bad effect that needs justification. This is not the case in end‐of‐life care for patients diagnosed as dying. Here, bringing about a satisfactory dying process for a patient is a good effect, not a bad one. What matters is that patients die without pain and suffering. This marks a crucial departure from the double‐effect doctrine; if the patient's death is not a bad effect then the doctrine is clearly irrelevant. A diagnosis of dying allows clinicians to focus on good dying and not to worry about whether their intervention affects the time of death. For a patient diagnosed as dying, time of death is rarely important. In our conclusion we suggest that acceptance of our argument might be problematic for opponents of physician‐assisted death. We suggest one way in which these opponents might argue for a distinction between such practice and palliative care; this relies on the double‐effect doctrine's distinction between foresight and intention.     

Inequalities in self‐reported health within Spanish Regional Health Services: devolution re‐examined?

There is evidence of small inter-regional inequalities in both health and health expenditure both before and after the decentralization of the Spanish National Health Service (Spanish NHS). However, it still has not been established whether devolution has exerted any influence on the development of intra-regional inequalities in health. This study examines the existence of socioeconomic health inequalities within the different Spanish healthcare services, using concentration indices. Data were taken from the most recent Encuesta Nacional de Salud (Spanish National Health Survey, 1997) and self-perceived health was used to measure health. It is argued that while inter-regional inequalities in health may have been unaffected by decentralization, intra-regional inequalities may be the undesired consequences of an efficiency-based NHS. The results suggest that devolution may have helped pro-equity policies but only in areas where the private sector is small.     

What role do Death Doulas play in end‐of‐life care? A systematic review

Current health and social care systems do not always meet the needs of the dying in our communities. As a result, patients and families are choosing to place their trust in those who can advocate for them or fill the gaps in care. Birth Doulas have been working with women during pregnancy and after birth for many years, and we are now seeing a new role, that of a Death Doula emerging in the end‐of‐life care space. How Death Doulas work within health and social care systems is not understood and we conducted a systematic review to explore the published literature to explore the role and potential implications for models of care delivery. Following the PRISMA recommendations, we searched the literature in January 2018 via bibliographic databases and the grey literature without search date parameters to capture all published literature. We looked for articles that describe the role/work of a death doula or a death midwife in the context of end‐of‐life care, or death and dying. Our search retrieved 162 unique records of which five papers were included. We analysed the papers in relation to relationship to health service, funding source, number and demand for services, training, licensing and ongoing support, and tasks undertaken. Death Doulas are working with people at the end of life in varied roles that are still little understood, and can be described as similar to that of “an eldest daughter” or to a role that has similarities to specialist palliative care nurses. Death doulas may represent a new direction for personalised care directly controlled by the dying person, an adjunct to existing services, or an unregulated form of care provision without governing oversight.