Sentence examples for stratum size from inspiring English sources

This stratum sampling weight was defined as the ratio between the population stratum size and the observed sample stratum size.

The stratified version of these tests, which should account for matching, is inefficient when the number of strata increases and the stratum size is small [ 1].

Standard analyses of continuous data from such trials fail to recognize the random nature of the stratum sizes.

We propose an alternative method of analysis that explicitly accounts for the randomness of the stratum sizes and illustrate its validity using simulations.

Further, in a pooled analysis across populations (strata), the weights should be based on the relative stratum sizes and the incidence of D within each stratum.

Data on stratum sizes and household sizes for selected enumeration areas were obtained and used to calculate weights for individual respondents.

A more detailed statistical analysis of subgroups was hampered by the small strata size.

In addition, HCV-RNA – a better indicator of chronic HCV – was available for only a portion of our sample, resulting in strata size too small for analysis.

Using this scheme plots are allocated according to n h  ~ N h S h, where h indexes strata, n h represents stratum sample size and N h and S h represent stratum population size and standard deviation of timber volume respectively (Cochran 1977).

The total number of households to be selected from each of the three primary strata considered the total number of households in each of the primary strata, sample size and overall total number of households at district level.

Table  1 shows the study's sampling strata, the size of the control population, and the size of the control sample in each stratum.