backgroundnutrition behaviors of adolescent girls is of serious health concerns. although nutrition education interventions in iran have met with some success, most of them could not promote nutrition behavioral changes. the aim of our study is to determine a school-based nutrition education intervention to improve adolescents’ nutrition behaviors and behavioral mediators based on the social co...

We present a unified R software ivmodel for analyzing instrumental variables with one endogenous variable. The package implements a general class of estimators, k-class estimators, and two confidence intervals that are fully robust to weak instruments. The package also provides power formulas. Finally, the package contains methods for sensitivity analysis to examine the sensitivity to the the i...

OBJECTIVE To investigate the adequacy of the content and format of the patient information section in package inserts of commonly prescribed drugs at the internal medicine service of a school hospital. METHODS Forty eight package inserts were collected from six pharmacies of the city of Porto Alegre in June 1998. The presence of mandatory notification and other information required by Brazili...

BACKGROUND Prolonged sitting is a specific occupational hazard in office workers. There is growing evidence that prolonged sitting is detrimental to metabolic health. The aim of this study is to determine whether providing office workers with education along with adjustable sit-stand workstations leads to reduction in sitting behavior. METHODS/DESIGN A randomized control trial (RCT) with thre...

Substantial research shows that high-quality early childhood education programs have a large economic payoff. This payoff is increased earnings for former child participants, increased earnings for parents, and increased earnings for all workers when average worker skills improve. A program package of universal pre-K, combined with child care and parenting support for all low-income families, w...

BackgroundNutrition behaviors of adolescent girls is of serious health concerns. Although nutrition education interventions in Iran have met with some success, most of them could not promote nutrition behavioral changes. The aim of our study is to determine a school-based nutrition education intervention to improve adolescents’ nutrition behaviors and behavioral mediators based on the social co...