نتایج جستجو برای: presence and absence probability
تعداد نتایج: 16882431 فیلتر نتایج به سال:
STUDY OBJECTIVE To investigate the effect of the local economy, as measured by municipal revenue and local unemployment rate, on sickness absence among the employed. DESIGN A prospective cohort study of 60 160 public sector employees (46 081 women, 14 079 men) with ecological measures of municipal revenue and local unemployment rate 1999-2000 and individual measures of sickness absence at bas...
BACKGROUND Mental disorders are an important public health problem because of their prevalence and the probability of long-term work disability. The incidence of sickness absence with mental disorders has increased between 1985 and 2000, but little is known about trends in recent years. This study investigated the incidence of sickness absence due to common mental disorders in the Netherlands f...
bovine oocytes matured in culture were denuded from cumulus cells with hyaluronidase and by repeat pipetting trough a fine pasture pipete and were inseminated with frozen-thawed spermatozoa in a protein-free bo medium containing 5m m-caffeine, l0 mg heparin/ml and with or without polyvinyl pyrrolidone (pvp) and different concentrations of hyaluronic acid. when oocytes were inseminated in the ab...
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