This study describes the dynamics of intrauterine device (IUD) use in Vietnam and implications for family planning services. A retrospective study was conducted among women who received IUD services in 2006-2009 at six commune health stations in three provinces. Women were interviewed about IUD use and switching behaviors. Of 1316 participants, 12.1% had discontinued IUD use at 12 months after ...

Inhaling habits were studied in 1316 men who freely smoked their usual brands of cigarette. An index of inhaling was calculated for each person by dividing the estimated increase in carboxyhaemoglobin level from a standard number of cigarettes by the carbon monoxide yield of the cigarette smoked. Smokers of ventilated filter cigarettes inhaled 82% more than smokers of plain cigarettes (p less t...

Affiliations: From the Department of Internal Medicine (Dr DePew), the Department of Emergency Medicine (Dr Gossman), and the Department of Pulmonary, Critical Care, and Sleep Medicine (Dr Morrow), Creighton University Medical Center. Financial /nonfi nancial disclosures: The authors have reported to CHEST that no potential confl icts of interest exist with any companies organizations whose pro...

Parents need to understand temperament because it has an impact on their daily interactions with their children. The essential messages for parents should be that temperament traits are real; they are important for both child and parent, and they are best managed by accommodation, not confrontation or attempts to change them. Parents can be reached at all levels of professional contact througho...

In a presentation of various methods for assessing the sensitivity of regression results to unmeasured confounding, Lin, Psaty, and Kronmal (1998, Biometrics54, 948-963) use a conditional independence assumption to derive algebraic relationships between the true exposure effect and the apparent exposure effect in a reduced model that does not control for the unmeasured confounding variable. How...