Results 71 to 80 of about 2,946,603 (185)
Background Fear of TB infection is rooted in historical and social memories of the disease, marked by stigma, segregation and exclusion. Healthcare workers (HCWs) face these same fears today, and even seek to hide their TB status when infected.
Michelle Engelbrecht +7 more
doaj +1 more source
Patterns of physical activity in hunter-gatherer children compared with US and UK children
Contemporary hunter-gatherers are highly active, but little is known about physical activity levels in hunter-gatherer children. We analysed 150 days of accelerometer data from 51 BaYaka hunter-gatherer children (aged 3–18) in the Republic of Congo ...
Luke Kretschmer +4 more
doaj +1 more source
Using consented health record linkage in a longitudinal cohort study
Objectives The aim of this project is to address important issues relevant to children’s health This will be done by enhancing information collected in the longitudinal, UK-wide Millennium Cohort Study (MCS) by linking participating children to their ...
Karen Tingay +13 more
doaj +1 more source
Longitudinal Analyses of the Effects of Trade Unions [PDF]
This paper examines how measurement error biases longitudinal estimates of union effects. It develops numerical examples, statistical models, and econometric estimates which indicate that measurement error is a major problem in longitudinal data sets, so
Richard B. Freeman
core
An aerodynamic load criterion for airships [PDF]
A simple aerodynamic bending moment envelope is derived for conventionally shaped airships. This criterion is intended to be used, much like the Naval Architect's standard wave, for preliminary estimates of longitudinal strength requirements.
Woodward, D. E.
core +1 more source
Data Difficulties in Labor Economics [PDF]
This essay sets out a framework for evaluating empirical work in terms of the ability of the data to provide adequate parameter estimates and hypothesis tests about the true underlying structure. Problems of aggregation, representativeness and structural
Daniel S. Hamermesh
core
Air pollution is associated with health in childhood. However, there is limited evidence on sensitive periods during the first 18 years of life. Data were drawn from the Millennium Cohort Study, a large and nationally representative cohort born in 2000 ...
Gergő Baranyi +4 more
doaj +1 more source
Background Pooling data from different sources will advance mental health research by providing larger sample sizes and allowing cross-study comparisons; however, the heterogeneity in how variables are measured across studies poses a challenge to this ...
Eoin McElroy +7 more
doaj +1 more source
Reproductive milestones and oral contraceptive timing predict late-life mortality
The timing of reproduction is causally linked to aging and mortality risk patterns in diverse species, but the existence of equivalent effects in humans is contentious.
Saul Justin Newman, Heather Booth
doaj +1 more source

