Variability according to medical school and study year will be analysed, both via variability quotients and also by comparing the different strata with the χ test and analysis of variance.
Finally, we checked the presence of effect modification across strata of each modifier by meta-analyzing the pooled estimates from the different strata, and by performing the chi-square test of heterogeneity.
We take the top 1000 clusters generated by each approach, and determine how well the reference complexes in the different strata are matched by these clusters.
In the different strata defined by comparator drug (lopinavir, saquinavir and amprenavir) similar results were seen.
However, we did not find any evidence for these variables to modify the effect of the single pollutants or the PCA-derived factors, and our results were relatively consistent in the different strata defined by these variables: boys and girls, smokers and nonsmokers, higher and lower social classes, and normal and overweight/obese mothers.
The different strata were probably produced by different writers or editors, who may have belonged to the same or different factions of the Mohist movement.
Prevalence ratios (PRs) with 95% CIs were estimated by modified Poisson regression and applied to assess the association between the different strata and the questions about the guidelines.
We used to revel in inverted snobbery about the different strata of travellers in India.
The criteria for the different strata were time elapsed since graduation: less than 12 months (stratum 1), 1 3 years (stratum 2), >3-6 yearstratumtum 3), >6-9 yearstratumtum 4) and >9-12 yearstratumtum 5).
Having uninterrupted strips, the stratification must be done by distance measurement, leading to unequal parts of the strips according to the occurrence of the different strata.
