نتایج جستجو برای: expert opinion
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METHODS Students attending five different types of high schools in central Elazig (a city in Turkey) during the 2009-2010 school year constitute the study population. One class was randomly selected from each high school. Out of 650 students, 640 participated in the study. The data were evaluated by using the SPSS program; percentage, mean, and chi-square analyses were used. FINDINGS Of all t...
BACKGROUND/AIMS The analyses of randomised controlled trials with missing data typically assume that, after conditioning on the observed data, the probability of missing data does not depend on the patient's outcome, and so the data are 'missing at random' . This assumption is usually implausible, for example, because patients in relatively poor health may be more likely to drop out. Methodolog...
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