such as when the teacher spends time teaching each one separately. Some universities sort students intocohortsbased on the year they first enrolled in order to better track graduation rates. The term can also be used in other ways, such as to refer to a group of students in the same progra...
2. Tests were carried out by teachers on the entire cohort of eight to nine year-olds in their third year at primary school. 测试是由老师在小学三年级所有八岁到九岁的学生中进行的。 来自柯林斯例句 3. All cohort data are affected by possible selection effects. 所有同期组群资料都受到可能发...
A cohort study initially starts by identifying a large group of people that are free of the outcome of interest. This is in contrast to the case–control study where the study starts with the identification of people with the outcome of interest. The cohort of disease-free people is now ass...
A country-specific or region-specific contextual variable representing cumulative lifetime prevalence of substance use in the individual’s birth cohort at each year of life was constructed and used to assess transitioning to each drug stage. An individual’s birth cohort was based on ...
Our principal motivation for doing so is to establish school effectiveness persistence while taking into account the temporal dependence that typically exists in school performance from one year to the next. We propose two methods of incorporating temporal dependence in value-added models. In the ...
#BeeWell is a hybrid population cohort study comprising: (i) a truncated longitudinal study in which participants are tracked with annual data points from age 12-15 (i.e., from Year 8 to Year 9 to Year 10 of secondary school; Sample 1); and, (ii) a cross-sectional study comprising ...
Drinkers were defined as participants who drank at least 12 alcohol drinks in any given year. History of CVD in the NHANES was based on the self-reported data of a previous diagnosis of congestive heart failure, coronary heart disease, angina pectoris, heart attack, or stroke. The CKD ...
We considered participants to be alive up until the year they were recorded as deceased in a survey response. For the exposure, we used 3 sets of survey variables to identify incarcerations: in 1980, survey participants were asked if they had ever been incarcerated and, if so, the date of...
year age dif- ference between cohorts was chosen as it has been found to result in cohort effects in terms of differential health status (both subjective health and number of conditions) in the longitudinal German Ageing Survey, starting with age groups 40–45 years of ...
Introduction Acne has been reported to be the most common chronic inflammatory skin disease worldwide,1-3 occurring mostly in the 15- to 17-year age group.4-6 Epidemiologic data from Western countries suggest that the prevalence of acne in adults older than 25 years is approximately 50%,...