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Additional info for 1980 census of population: Ancestry of the population by state: 1980. supplementary report National Census and Statistics Office, National Economic and Development Authority, Republic of the Philippines, Special Report (Том 1)

Sample text

Formulas and procedures for estimating effect size values from quantitative information that is incomplete or presented in forms different from that required for direct computation are a necessary and important part of effect size coding in meta­analysis.  That is, the sampling error is smaller for effect sizes estimated from large samples than for those estimated from small samples.  This actually makes the combined estimate worse than if we simply took the one based on the larger sample by itself.

The type of urban area or the nonresponse rates of the surveys.  Since the variable of interest is measured the same way for Page 41 each individual in each group, that is, as a count of the number of days in the hospital, the means can be compared across groups directly using the mean itself as the effect size statistic, as where xi is an individual score for subject i (i = 1 to n), n is the total sample size, and s is the standard deviation of x.  Meta­analysis would proceed using the inverse variance to weight these effect sizes so that the mean across all hospitals, differences among hospitals, and relationships between mean days of hospitalization and characteristics of the hospital could be examined and tested for statistical significance.

Randomized designs) and studies with sufficient data to assess the similarity of the groups being compared.  Cont.  The costs of stricter criteria are smaller samples of studies, the loss of data from excluded, potentially useful studies, and the possibility that the Page 22 more methodologically rigorous studies are conducted in unrepresentative circumstances and produce findings of limited generalizability.  The methodological criteria a meta­analyst develops, therefore, are likely to be important but it will be difficult to know in advance which method issues will be most important.

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1980 census of population: Ancestry of the population by state: 1980. supplementary report National Census and Statistics Office, National Economic and Development Authority, Republic of the Philippines, Special Report (Том 1) by United States. Bureau of the Census. Population Division


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