Occupations, work characteristics and common mental disorder

BACKGROUND

The present study aimed to assess the prevalence of common mental disorders (CMDs) by occupation in a representative sample of the English adult population. Another aim was to examine whether the increased risk of CMD in some occupations could be explained by adverse work characteristics. Method We derived a sample of 3425 working-age respondents from the Adult Psychiatric Morbidity Survey 2007. Occupations were classified by Standard Occupational Classification group, and CMD measured by the Revised Clinical Interview Schedule. Job characteristics were measured by questionnaire, and tested as explanatory factors in associations of occupation and CMD.

RESULTS

After adjusting for age, gender, housing tenure and marital status, caring personal service occupations had the greatest risk of CMD compared with all occupations (odds ratio 1.73, 95% confidence interval 1.16-2.58). The prevalence of adverse psychosocial work characteristics did not follow the pattern of CMD by occupation. Work characteristics did not explain the increased risk of CMDs associated with working in personal service occupations. Contrary to our hypotheses, adding work characteristics individually to the association of occupation and CMD tended to increase rather than decrease the odds for CMD.

CONCLUSIONS

As has been found by others, psychosocial work characteristics were associated with CMD. However, we found that in our English national dataset they could not explain the high rates of CMD in particular occupations. We suggest that selection into occupations may partly explain high CMD rates in certain occupations. Also, we did not measure emotional demands, and these may be important mediators of the relationship between occupation type and CMDs.

Absorption patterns of meals containing complex carbohydrates in type 1 diabetes

AIMS/HYPOTHESIS

Successful postprandial glycaemia management requires understanding of absorption patterns after meals containing variable complex carbohydrates. We studied eight young participants with type 1 diabetes to investigate a large low-glycaemic-load (LG) meal and another eight participants to investigate a high-glycaemic-load (HG) meal matched for carbohydrates (121 g).

METHODS

On Visit 1, participants consumed an evening meal. On follow-up Visit 2, a variable-target glucose clamp was performed to reproduce glucose and insulin levels from Visit 1. Adopting stable-label tracer dilution methodology, we measured endogenous glucose production on Visit 2 and subtracted it from total glucose appearance measured on Visit 1 to obtain meal-attributable glucose appearance.

RESULTS

After the LG meal, 25%, 50% and 75% of cumulative glucose appearance was at 88 ± 21, 175 ± 39 and 270 ± 54 min (mean ± SD), whereas glucose from the HG meal appeared significantly faster at 56 ± 12, 100 ± 25 and 153 ± 39 min (p < 0.001 to 0.003), and resulted in a 50% higher peak appearance (p < 0.001). Higher apparent bioavailability by 15% (p = 0.037) was observed after the LG meal. We documented a 20 min deceleration of dietary mixed carbohydrates compared with dietary glucose for the HG meal and a twofold deceleration for the LG meal.

CONCLUSIONS/INTERPRETATION

Absorption patterns may be influenced by glycaemic load and/or meal composition, affecting optimum prandial insulin dosing in type 1 diabetes.

Search for photon-linelike signatures from dark matter annihilations with H.E.S.S

Gamma-ray line signatures can be expected in the very-high-energy (E(γ)>100 GeV) domain due to self-annihilation or decay of dark matter (DM) particles in space. Such a signal would be readily distinguishable from astrophysical γ-ray sources that in most cases produce continuous spectra that span over several orders of magnitude in energy. Using data collected with the H.E.S.S. γ-ray instrument, upper limits on linelike emission are obtained in the energy range between ∼ 500 GeV and ∼ 25 TeV for the central part of the Milky Way halo and for extragalactic observations, complementing recent limits obtained with the Fermi-LAT instrument at lower energies. No statistically significant signal could be found. For monochromatic γ-ray line emission, flux limits of (2 × 10(-7) -2 × 10(-5)) m(-2) s(-1) sr(-1) and (1 × 10(-8) -2 × 10(-6)) m(-2) s(-1)sr(-1) are obtained for the central part of the Milky Way halo and extragalactic observations, respectively. For a DM particle mass of 1 TeV, limits on the velocity-averaged DM annihilation cross section ⟨σv⟩(χχ → γγ) reach ∼ 10(-27) cm(3)s(-1), based on the Einasto parametrization of the Galactic DM halo density profile.

Developing and testing TEAM (Team Evaluation and Assessment Measure), a self-assessment tool to improve cancer multidisciplinary teamwork

BACKGROUND

Cancer multidisciplinary teams (MDTs) are well established worldwide and are an expensive resource yet no standardised tools exist to measure performance. We aimed to develop and test an MDT self-assessment tool underpinned by literature review and consensus from over 2000 UK MDT members about the "characteristics of an effective MDT."

METHODS

Questionnaire items relating to all characteristics of MDTs (particularly Leadership and Chairing; Teamworking and Culture; Patient-centred care; Clinical decision-making process; and Organisation and administration during meetings) were developed by an expert panel. Acceptability, feasibility and psychometric properties were tested by online completion of the questionnaire by 23 MDTs from 4 UK NHS Trusts followed by interviews with 74 team members including members from all teams and nonresponders. 10 of the MDTs also completed questionnaires that directly translated each characteristic to an item (for the five domains above) to test content validity.

RESULTS

A total of 47 items were created, each rated for agreement on a 5-point scale. A total of 329 (52 %) of 637 team members completed the questionnaire, including representation from medical, nursing and clerical MDT members. Responses correlated well with domain-specific questionnaires (r > 0.67, p = 0.01), most domain-scales had acceptable internal consistency (Cronbach alpha > 0.60), and good item discrimination (majority of items r < 0.20). Team members were positive about its value.

CONCLUSIONS

Self-assessment of team performance using this tool may support MDT development.

Validity of triple- and dual-tracer techniques to estimate glucose appearance

The triple-tracer (TT) dilution technique has been proposed to be the gold standard method to measure postprandial glucose appearance. However, validation against an independent standard has been missing. We addressed this issue and also validated the simpler dual-tracer (DT) technique. Sixteen young subjects with type 1 diabetes (age 19.5 ± 3.8 yr, BMI 23.4 ± 1.5 kg/m(2), HbA(1c) 8.7 ± 1.7%, diabetes duration 9.0 ± 6.9 yr, total daily insulin 0.9 ± 0.2 U·kg(-1)·day(-1), mean ± SD) received a variable intravenous 20% dextrose infusion enriched with [U-(13)C]glucose over 8 h to achieve postprandial-resembling glucose excursions while intravenous insulin was administered to achieve postprandial-resembling levels of plasma insulin. Primed [6,6-(2)H(2)]glucose was infused in a manner that mimicked the expected endogenous glucose production and [U-(13)C; 1,2,3,4,5,6,6-(2)H(7)]glucose was infused in a manner that mimicked the expected glucose appearance from a standard meal. Plasma glucose enrichment was measured by gas chromatography-mass spectrometry. The intravenous dextrose infusion served as an independent standard and was reconstructed using the TT and DT techniques with the two-compartment Radziuk/Mari model and an advanced stochastic computational method. The difference between the infused and reconstructed dextrose profile was similar for the two methods (root mean square error 6.6 ± 1.9 vs. 8.0 ± 3.5 μmol·kg(-1)·min(-1), TT vs. DT, P = NS, paired t-test). The TT technique was more accurate in recovering the overall dextrose infusion (100 ± 9 and 92 ± 12%; P = 0.02). The root mean square error associated with the mean dextrose infusion profile was 2.5 and 3.3 μmol·kg(-1)·min(-1) for the TT and DT techniques, respectively. We conclude that the TT and DT techniques combined with the advanced computational method can measure accurately exogenous glucose appearance. The TT technique tends to outperform slightly the DT technique, but the latter benefits from reduced experimental and computational complexity.

The contribution of work and non-work stressors to common mental disorders in the 2007 Adult Psychiatric Morbidity Survey

BACKGROUND

Evidence for an effect of work stressors on common mental disorders (CMD) has increased over the past decade. However, studies have not considered whether the effects of work stressors on CMD remain after taking co-occurring non-work stressors into account.

METHOD

Data were from the 2007 Adult Psychiatric Morbidity Survey, a national population survey of participants 6 years living in private households in England. This paper analyses data from employed working age participants (N=3383: 1804 males; 1579 females). ICD-10 diagnoses for depressive episode, generalized anxiety disorder, obsessive compulsive disorder, agoraphobia, social phobia, panic or mixed anxiety and depression in the past week were derived using a structured diagnostic interview. Questionnaires assessed self-reported work stressors and non-work stressors.

RESULTS

The effects of work stressors on CMD were not explained by co-existing non-work stressors. We found independent effects of work and non-work stressors on CMD. Job stress, whether conceptualized as job strain or effort-reward imbalance, together with lower levels of social support at work, recent stressful life events, domestic violence, caring responsibilities, lower levels of non-work social support, debt and poor housing quality were all independently associated with CMD. Social support at home and debt did not influence the effect of work stressors on CMD.

CONCLUSIONS

Non-work stressors do not appear to make people more susceptible to work stressors; both contribute to CMD. Tackling workplace stress is likely to benefit employee psychological health even if the employee's home life is stressful but interventions incorporating non-work stressors may also be effective.

A detailed surgical method for mechanical decerebration of the rat

Surgical methods currently employed for the mechanical decerebration of a rat are only briefly described in the literature; hence, an information void exists for researchers wishing to adopt this technique successfully. Decerebration can lead to a high rate of mortality owing to cranial bleeding, particularly if the operator is inexperienced and uninformed. The illustrated methodology presented here describes, in detail, steps in the decerebration process and indicates effective approaches, such as reversible occlusion of a carotid artery, the combined use of tissue adhesive and haemostatic sponge, and perisurgical monitoring of blood pressure, by which to control blood loss and thus maintain mean postsurgical blood pressure within acceptable physiological parameters. By using this methodology, animal losses can be minimized, particularly in the early stages of adoption of the technique, ultimately reducing the numbers required for a study of this nature.

Pathophysiology of postprandial hyperglycaemia in women with type 1 diabetes during pregnancy

AIMS/HYPOTHESIS

Although maternal hyperglycaemia is associated with increased risk of adverse pregnancy outcome, the mechanisms of postprandial hyperglycaemia during pregnancy are poorly understood. We aimed to describe glucose turnover in pregnant women with type 1 diabetes, according to stage of gestation (early vs late gestation).

METHODS

The rates of systemic glucose appearance (R(a)) and glucose disposal (R(d)) were measured in ten pregnant women with type 1 diabetes during early (12-16 weeks) and late (28-32 weeks) gestation. Women ate standardised meals--a starch-rich 80 g carbohydrate dinner and a sugar-rich 60 g carbohydrate breakfast--and fasted between meals and overnight. Stable-label isotope tracers ([6,6-(2)H(2)]glucose and [U-(13)C]glucose) were used to determine R(a), R(d) and glucose bioavailability. Closed-loop insulin delivery maintained stable glycaemic conditions.

RESULTS

There were no changes in fasting R(a) (10 ± 2 vs 11 ± 2 μmol kg(-1) min(-1); p = 0.32) or fasting R(d) (11 ± 2 vs 11 ± 1 μmol kg(-1) min(-1); p = 0.77) in early vs late gestation. There was increased hepatic insulin resistance (381 ± 237 vs 540 ± 242 μmol kg(-1) min(-1) × pmol/l; p = 0.04) and decreased peripheral insulin sensitivity (0.09 ± 0.04 vs 0.05 ± 0.02 μmol kg(-1) min(-1) per pmol/l dinner, 0.11 ± 0.05 vs 0.07 ± 0.03 μmol kg(-1) min(-1) per pmol/l breakfast; p = 0.002) in late gestation. It also took longer for insulin levels to reach maximal concentrations (49 [37-55] vs 71 [52-108] min; p = 0.004) with significantly delayed glucose disposal (108 [87-125] vs 135 [110-158] min; p = 0.005) in late gestation.

CONCLUSIONS/INTERPRETATION

Postprandial glucose control is impaired by significantly slower glucose disposal in late gestation. Early prandial insulin dosing may help to accelerate glucose disposal and potentially ameliorate postprandial hyperglycaemia in late pregnancy.

TRIAL REGISTRATION

ISRCTN 62568875

FUNDING

Diabetes UK Project Grant BDA 07/003551. H.R. Murphy is funded by a National Institute for Health Research (NIHR) research fellowship (PDF/08/01/036). Supported also by the Juvenile Diabetes Research Foundation (JDRF), Abbott Diabetes Care (Freestyle Navigator CGM and sensors free of charge), Medical Research Council Centre for Obesity and Related Metabolic Diseases and NIHR Cambridge Biomedical Research Centre.

Natural variation in drug susceptibility to HCV polymerase inhibitors in treatment-naïve HCV patient isolates

Summary.  To assess the natural variation in drug susceptibility among treatment-naïve hepatitis C virus (HCV) patient isolates, the susceptibilities of chimeric replicons carrying the HCV NS5B polymerase from up to 51 patient isolates against a panel of diverse HCV nonnucleoside polymerase inhibitors were evaluated using a replicon-based transient replication assay. Some patient to patient variation in susceptibility to the panel of three HCV nonnucleoside polymerase inhibitors was observed. Linear regression and correlation analyses revealed no correlations among the susceptibilities to the polymerase inhibitors tested. Our results suggest that variable antiviral responses to HCV nonnucleoside polymerase inhibitors may be observed because of the natural variation in baseline susceptibility. In addition, the lack of correlation among the susceptibilities to three classes of HCV polymerase inhibitors evaluated here supports their possible combined use in a combination therapy strategy.

An activating mutation of AKT2 and human hypoglycemia

Pathological fasting hypoglycemia in humans is usually explained by excessive circulating insulin or insulin-like molecules or by inborn errors of metabolism impairing liver glucose production. We studied three unrelated children with unexplained, recurrent, and severe fasting hypoglycemia and asymmetrical growth. All were found to carry the same de novo mutation, p.Glu17Lys, in the serine/threonine kinase AKT2, in two cases as heterozygotes and in one case in mosaic form. In heterologous cells, the mutant AKT2 was constitutively recruited to the plasma membrane, leading to insulin-independent activation of downstream signaling. Thus, systemic metabolic disease can result from constitutive, cell-autonomous activation of signaling pathways normally controlled by insulin.

Adaptive e-learning to improve dietary behaviour: a systematic review and cost-effectiveness analysis

BACKGROUND

UK public health policy strongly advocates dietary change for the improvement of population health and emphasises the importance of individual empowerment to improve health. A new and evolving area in the promotion of dietary behavioural change is 'e-learning', the use of interactive electronic media to facilitate teaching and learning on a range of issues including health. The high level of accessibility, combined with emerging advances in computer processing power, data transmission and data storage, makes interactive e-learning a potentially powerful and cost-effective medium for improving dietary behaviour.

OBJECTIVE

This review aims to assess the effectiveness and cost-effectiveness of adaptive e-learning interventions for dietary behaviour change, and also to explore potential psychological mechanisms of action and components of effective interventions.

DATA SOURCES

Electronic bibliographic databases (Cumulative Index to Nursing and Allied Health Literature, The Cochrane Library, Dissertation Abstracts, EMBASE, Education Resources Information Center, Global Health, Health Economic Evaluations Database, Health Management Information Consortium, MEDLINE, PsycINFO and Web of Science) were searched for the period January 1990 to November 2009. Reference lists of included studies and previous reviews were also screened; authors were contacted and trial registers were searched.

REVIEW METHODS

Studies were included if they were randomised controlled trials, involving participants aged ≥ 13 years, which evaluated the effectiveness of interactive software programs for improving dietary behaviour. Primary outcomes were measures of dietary behaviours, including estimated intakes or changes in intake of energy, nutrients, dietary fibre, foods or food groups. Secondary outcome measures were clinical outcomes such as anthropometry or blood biochemistry. Psychological mediators of dietary behaviour change were also investigated. Two review authors independently screened results and extracted data from included studies, with any discrepancies settled by a third author. Where studies reported the same outcome, the results were pooled using a random-effects model, with weighted mean differences (WMDs), and 95% confidence intervals (CIs) were calculated. Cost-effectiveness was assessed in two ways: through a systematic literature review and by building a de novo decision model to assess the cost-effectiveness of a 'generic' e-learning device compared with dietary advice delivered by a health-care professional.

RESULTS

A total of 36,379 titles were initially identified by the electronic searches, of which 43 studies were eligible for inclusion in the review. All e-learning interventions were delivered in high-income countries. The most commonly used behavioural change techniques reported to have been used were goal setting; feedback on performance; information on consequences of behaviour in general; barrier identification/problem solving; prompting self-monitoring of behaviour; and instruction on how to perform the behaviour. There was substantial heterogeneity in the estimates of effect. E-learning interventions were associated with a WMD of +0.24 (95% CI 0.04 to 0.44) servings of fruit and vegetables per day; -0.78 g (95% CI -2.5 g to 0.95 g) total fat consumed per day; -0.24 g (95% CI -1.44 g to 0.96 g) saturated fat intake per day; -1.4% (95% CI -2.5% to -0.3%) of total energy consumed from fat per day; +1.45 g (95% CI -0.02 g to 2.92 g) dietary fibre per day; +4 kcal (95% CI -85 kcal to 93 kcal) daily energy intake; -0.1 kg/m2 (95% CI -0.7 kg/m2 to 0.4 kg/m2) change in body mass index. The base-case results from the E-Learning Economic Evaluation Model suggested that the incremental cost-effectiveness ratio was approximately £102,112 per quality-adjusted life-year (QALY). Expected value of perfect information (EVPI) analysis showed that although the individual-level EVPI was arguably negligible, the population-level value was between £37M and £170M at a willingness to pay of £20,000-30,000 per additional QALY.

LIMITATIONS

The limitations of this review include potential reporting bias, incomplete retrieval of completed research studies and data extraction errors.

CONCLUSION

The current clinical and economic evidence base suggests that e-learning devices designed to promote dietary behaviour change will not produce clinically significant changes in dietary behaviour and are at least as expensive as other individual behaviour change interventions.

FUTURE WORK RECOMMENDATIONS

Despite the relatively high EVPI results from the cost-effectiveness modelling, further clinical trials of individual e-learning interventions should not be undertaken until theoretically informed work that addresses the question of which characteristics of the target population, target behaviour, content and delivery of the intervention are likely to lead to positive results, is completed.

FUNDING

The National Institute for Health Research Health Technology Assessment programme.

A UK collaborative 1-day pilot information and support forum facilitated by a national breast cancer charity and NHS cancer genetic counsellors, for women at high risk, BRCA 1/2 gene carriers and hereditary breast cancer

Since the identification of the breast cancer susceptibility genes BRCA 1/2, genetic assessments of individuals and their families has greatly increased. The assessment of an individual as being at high risk, a gene carrier or an inheritor of cancer changes that individual's life. There is then a great need for ongoing information and support, not only from healthcare professionals but from peers - other women in the same situation. Breast Cancer Care is aware of this need; for a number of years, we have been providing published information, online-based information and support and telephone support to women who are BRCA 1/2 gene carriers and women with hereditary breast cancer. As part of our continuing commitment to improve on and develop other information and support services to this target group, we collaborated with a number of Genetic Counsellors from London, Oxford, Cambridge and Southampton to develop and pilot a 1-day support forum. This article discusses the factors that led to the pilot information and support forum, its development and how it was evaluated, and suggests a potential way forward.

Potential sources of Campylobacter infection on chicken farms: contamination and control of broiler-harvesting equipment, vehicles and personnel

AIMS

To test the efficacy of enhanced biosecurity measures on poultry farms for reducing environmental contamination with Campylobacter during partial depopulation of broiler flocks prior to normal slaughter age. The study has also evaluated the risk of infection from live-bird transport crates that are routinely cleaned at the slaughterhouse, but may remain contaminated.

METHODS AND RESULTS

On-farm sampling and Campylobacter isolation was undertaken to compare the prevalence of contamination on vehicles, equipment and catching personnel during farm visits that took place under normal or enhanced biosecurity. Campylobacters were found in almost all types of sample examined and enhanced biosecurity reduced the prevalence. However, the additional measures failed to prevent colonisation of the flocks. For transport crates, challenge trials involved exposure of broilers to commercially cleaned crates and genotyping of any campylobacters isolated. The birds were rapidly colonised with the same genotypes as those isolated from the cleaned crates.

CONCLUSIONS

The enhanced biosecurity measures were insufficient to prevent flock colonisation, and the problem was exacerbated by inadequate cleaning of transport crates at the slaughterhouse.

SIGNIFICANCE AND IMPACT OF THE STUDY

Current commercial practices in the United Kingdom facilitate the spread of campylobacters among broiler chicken flocks. Prevention of flock infection appears to require more stringent biosecurity than that studied here.

Autophagy in the immune response to tuberculosis: clinical perspectives

A growing body of evidence points to autophagy as an essential component in the immune response to tuberculosis. Autophagy is a direct mechanism of killing intracellular Mycobacterium tuberculosis and also acts as a modulator of proinflammatory cytokine secretion. In addition, autophagy plays a key role in antigen processing and presentation. Autophagy is modulated by cytokines; it is stimulated by T helper type 1 (Th1) cytokines such as tumour necrosis factor (TNF)-α and interferon (IFN)-γ, and is inhibited by the Th2 cytokines interleukin (IL)-4 and IL-13 and the anti-inflammatory cytokine IL-10. Vitamin D, via cathelicidin, can also induce autophagy, as can Toll-like receptor (TLR)-mediated signals. Autophagy-promoting agents, administered either locally to the lungs or systemically, could have a clinical application as adjunctive treatment of drug-resistant and drug-sensitive tuberculosis. Moreover, vaccines which effectively induce autophagy could be more successful in preventing acquisition or reactivation of latent tuberculosis.

FC13-10 - Frequency of prolonged qtc in children and adolescents hospitalized for psychiatric disorders: a nested case-control study

Background

The rate-corrected Q-T interval (QTc) prolongation is a risk factor for sudden death and may be produced by antipsychotic drugs.

Objective

To determined the frequency and psychopharmacological correlates of baseline prolongation of QTc in a large pediatric cohort.

Methods

The QTc was measured on the electrocardiograms obtained on 811 children and adolescents (404 males and 407 females, mean age: 15.5 ± 2.4 years) consecutively evaluated in the admissions unit of a psychiatric hospital. Each patient with QTc > 440 msec was age- and gender-matched with 5 patients with QTc< 420 msec. The psychiatric diagnoses and psychotropic treatment of patients with prolonged QTc and control subjects were compared in univariate and logistic analyses.

Results

QTc duration was > 440 msec (mean 454 ± 10 msec, range 442–481 msec) in 16 patients (1.97%; 95% confidence interval (CI): 1.17%–3.25%). The 80 control subjects had a mean QTc of 391 ± 21 msec. The groups were similar with regard to the proportion of patients on antipsychotics (43.8% vs. 40.8%, p = 0.78) and chlorpromazine equivalents (165.5 ± 109.7 mg vs. 167.6 ± 217.8 mg, p = 0.98). Logistic regression identified schizophrenia as the only psychiatric predictor of baseline QTc prolongation (odds-ratio: 6.17, 95% CI: 1.24–30.69, p = 0.042).

Conclusions

In a large cohort of children and adolescents with psychiatric disorders, baseline QTc prolongation was infrequent and, at most, of moderate severity. The findings argue against performing electrocardiograms prior to the initiation of antipsychotics in all patients from this age group.

25 EFFECT OF REPRODUCTIVE TRACT SIZE ON CONCEPTION RATES IN LACTATING DAIRY COWS UTILIZING A REPRODUCTIVE TRACT SCORING SYSTEM

Reproductive tract scoring (RTS) systems have been effective in evaluating fertility of heifers. A similar RTS system has not been reported in lactating dairy cows pertaining to conception rates following artificial insemination. Objectives of this study include development of a RTS system for lactating dairy cows and determining if RTS had an effect on artificial insemination (AI) success with various types of semen [conventional (CS), sexed (SS)]. During pre-breeding examinations (typically 30–60 DIM) by trained personnel, cows were assigned a RTS (1, 2, or 3) based on size and length of the cervix and uterine horns, but not including status of the ovaries. Tracts for RTS 1 were small, compact uterine horns resting within the pelvic cavity, RTS 2 were intermediate in size with uterine horns resting partially outside the pelvic cavity, and RTS 3 were large, deep tracts resting entirely outside the pelvis into the abdominal cavity. Additionally, cows were evaluated for RTS at a local abattoir before harvest, and tracts collected for volume and length measurements. Volume measurements were collected using Foley catheters and measuring water displaced in the uterine horns at a constant pressure. Length of the vagina, cervix, and uterine horns were measured using a flexible tape. Insemination data analysis was performed using mixed model analysis of variance in Glimmix SAS 9.2 (SAS Institute Inc., Cary, NC, USA). Insemination data included 613, 308, and 572 scores in first, second, and third+ lactation cows, respectively. First-lactation cows had 65.25% with RTS 1, 30.02% RTS 2, and 4.73% RTS 3. Second-lactation cows had 53.25% RTS 1, 39.29% RTS 2, and 7.47% RTS 3. Cows with 3+ lactations had 43.18% RTS 1, 43.88% RTS 2, and 12.94% RTS 3. Cows were artificially inseminated (n = 2401 inseminations) with either CS (n = 1981) or SS (n = 420). Conception rates for CS were 38.65%, 34.26%, and 24.41% for RTS 1, 2, and 3, respectively (P = 0.0154 for RTS 1 v. 3). Conception rates for CS (38.65%, RTS 1; 34.26%, RTS 2) were higher compared to SS (21.37%, RTS 1 (P = 0.0001); 20.72%, RTS 2 (P = 0.0186)). No differences were detected between CS (24.40%) and SS (22.35%) within RTS 3; however, observations were limited for SS inseminations with RTS 3. Preliminary data regarding total length (vagina, cervix, and uterine horns; RTS 1, 2, 3 = 103.1 cm, 114.9 cm, 134 cm, respectively) and volume (RTS 1, 2, 3 = 102 mL, 131 mL, 133.3 mL, respectively) suggest both increase as RTS increases but limited observations prevent conclusions at this time. Conception rates indicate smaller reproductive tracts have improved fertility in lactating dairy cows when using CS. Identification of larger reproductive tracts will allow for more economically efficient AI programs by utilising inexpensive, high fertility semen.

Common mental disorders, unemployment and welfare benefits in England

OBJECTIVES

Individuals who are out of work have a higher rate of common mental disorders (CMD) than individuals who are employed. People who are unemployed in the UK are entitled to welfare benefits to alleviate financial strain. This study examined rates of CMD in individuals who were employed, unemployed and receiving various UK benefits. It also investigated associations between duration of unemployment, gender and CMD.

STUDY DESIGN

An analysis of 5090 working-age participants from the Adult Psychiatric Morbidity Survey 2007, a stratified probability sample survey conducted among adults aged 16 years and over living in private households in England.

METHODS

CMD was assessed using the Clinical Interview Schedule (Revised). Information was gathered on sociodemographics, employment, income, benefits and debt. Data were analysed using logistic regression.

RESULTS

Risk of CMD was significantly greater in individuals classified as: unemployed; economically inactive; not working due to physical health reasons; unable to find a suitable job; receiving housing, care or sickness benefit; and receiving income support. However, risk of CMD was not significantly greater in individuals receiving jobseeker's allowance. Individuals unemployed for less than 1 year or more than 3 years had a higher risk of CMD. Some interactions with gender were significant, with associations being greater in men than women.

CONCLUSIONS

Job loss events are not the only reason for unemployed people to develop CMD. The state of unemployment itself may be detrimental to mental health. Risk of CMD is increased in those who have been out of work for 3 years or more. Associations between benefits and mental health are likely to be due to social, health or economic circumstances associated with benefit eligibility.