Exact(2)
Ancillary but still important aims were to evaluate the impact of reduced laboratory/technical variability on risk estimates and to verify whether Bayesian statistics can provide reliable estimates in small strata.
In smaller cohorts and in case control studies, risk estimates based on classic frequentist modeling are likely to produce unreliable estimates in small strata, and any likelihood-based analysis for small data, or even worse, missing data, usually involves computationally intensive methods or ad hoc adjustments.
Similar(58)
The non-proportionality aimed at increasing sample size in smaller strata.
Due to small strata in this analysis, we broke the matched pairs and adjusted for age using the same categories used in the frequency matched studies.
Nonetheless we detected significant associations within these small strata.
The "rich" people in Japan are certainly a small stratum of society.
Circuits were randomized to receive either SP+PQ, SP+AQ or DHA+PQ after being divided into two strata, one small stratum comprising circuits in the central village of Keur Soce in which the health post is located and where most houses have electricity, and outlying villages forming the larger second stratum.
Recombination between sex chromosomes will be suppressed efficiently with relatively small inversions only, which reinforces the idea that the ancient strata that we have defined based on the X Y divergence, such as stratum 3, are in fact a mosaic of smaller strata that are no longer distinguishable.
Unadjusted analysis showed that the admitted fraction was smaller in strata of increasing in-hospital occupancy.
Despite our large overall study population, our examination of differences in age and sex strata resulted in small numbers in some trajectory classes, which limited the power to detect significant differences in some groups.
This analysis was also unable to explore age-specific differences in disease burden because the number of hospitalizations and deaths was relatively small resulting in small numbers in each age stratum.
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