What does OS stand for?

Results from this observational study further demonstrate the impact of TYSABRI on improving MS patients' well-being as reported by patients who live with this disease every day," he added.

The authors of "An Observational Study of the Effectiveness of Point-of-Use Chlorination" (JEH, April 2009) hypothesized the efficacy of point-of-use chlorination in controlled trials would vary from its effectiveness in households, and their study data led them to conclude human factors and uncontrolled water quality effects significantly decrease point-of-use chlorination effectiveness.

The negative eight-year study was an observational study, not the gold standard: a double-blind placebo-controlled study.

He and his colleagues conducted an observational study of 29 asymptomatic premenopausal women with regular menses and followed them with reproductive and behavioral measures for a mean of 5 years until they had gone through menopause.

Hundreds of interviews and internal documents blend with Chandrasekaran's blend of history and observational study to document the lives of those who inhabited the Green Zone during the occupation, and the sheltered ironies and inconsistencies which exist there.

Data from the Nurses Health Study, a large observational study, suggest that duration of lactation is inversely associated with risk of type 2 diabetes in young and middle-aged women.

Etuk is an informative compendium of information and observational study discerning the most productive approach to securing and leading a successful life.

95 Paperback HQ755 Sansone describes conclusions drawn from a research and observational study that she undertook over a period of 18 months on the interaction between mothers and infants.