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There have been plenty of generational comedies about the attrition between young and old.
The impact of the trend is evident in a significant nationwide bulge in students enrolled in ninth grade and a tripling of the attrition between the 9th and 10th grades over the last 30 years, according to a report by Walter Haney of Boston College.
In light of the attrition between the original sample and the final sample used in our analysis an attrition analysis was performed.
Second, the attrition between the SLOSH waves may have biased the results because of selective responses.
To evaluate the consequences of the initial non-response and the attrition between waves, I calculated the mean number of children of female respondents, separately per birth cohort and per wave and compared this with population data on the mean number of children of women from these birth cohorts at the time of the respective waves (as published by Statistics Netherlands).
On the other hand, there were advantages to the research assistant knowing the assignment, such as ensuring that all participants received the intervention could report their experiences of it, and lowering the attrition between follow ups thanks to personal contact between the interviewer and the elderly person.
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One key limitation of this study is the lack of power as a result of the high attrition between the two time points.
Simple meta-regressions were applied on two continuous methodological variables: the differential attrition between the treatment and control groups and the total score obtained in the methodological quality scale (see Table 4).
To test for differences in the attrition rates between the 1st and 3rd vaccinations between the invervention and control groups the χ test will be used.
However, the sign of the coefficient is comparable in the attrition analysis between genders, thus not explaining the differing results found in our analyses.
What is the attrition rate between training and employment?
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