Now showing items 21-30 of 34
On summary measures analysis of the linear mixed effects model for repeated measures when data are not missing completely at random
(John Wiley & Sons, Ltd., 1999-09-15)
Subjects often drop out of longitudinal studies prematurely, yielding unbalanced data with unequal numbers of measures for each subject. A simple and convenient approach to analysis is to develop summary measures for each ...
Stress and exercise among the Japanese elderly
(Elsevier, 1993-06)
This study seeks to replicate and extend research on the stress process by examining the relationships among stress, social support, physical exercise, and depressive symptoms with data provided by a recent nationwide ...
Self-reported physical health among the aged in Wuhan, China
(Kluwer Academic Publishers; Springer Science+Business Media, 1993-07)
It has long been recognized that cross-cultural differences in health and illness reflect not only genuine variation in the incidence and prevalence of morbidity, disability, and mortality, but also the social processes ...
Validity of Adolescents' Report of Maternal Age
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1997-12)
Examined the validity of adolescents' reports of their mother's age. Most research on the validity of self-report focuses on personal behaviors such as alcohol and substance use, or response bias due to social desirability. ...
Communication within low income families and the management of asthma
(Elsevier, 1990-04)
This study examines the effects of communication between low income urban parents and children about a chronic disease on the extent to which parent and child effectively manage the illness. Four asthma communication factors ...
Mechanistic steps in the photoreduction of mercury in natural waters
(Elsevier, 1994-09-01)
Elemental mercury accounts for 10-50% of the dissolved mercury in lakes but plays a vital role in the cycling of this element in lacustrine environments. The view is advanced that a large fraction of the Hg(0) is generated ...
Life-style and substance use among male African American urban adolescents: A cluster analytic approach
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1992-02)
Tracking Substance Abusers in Longitudinal Research: Understanding Follow-Up Contact Difficulty
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1998-04)
Studies examining follow-up contact difficulty provide useful information for planning longitudinal studies and for assessing the validity of follow-up data. Contact difficulty was examined among 96 substance abusers ...
Mercury pollution from the past mining of gold and silver in the Americas
(Elsevier, 1994-06-20)
The development of the patio amalgamation process into an industrial scale operation in 1554 stimulated the massive production of silver in the New World but left behind an unprecedented quantity of mercury pollution. The ...