Sentence examples for fixed strata from inspiring English sources

Regarding inference, the DHS surveys are generally carried out within fixed strata representing urban and rural areas of each region.

16 In our study the fixed strata were calendar months, and the control days comprised every other day in the calendar month of the myocardial infarction.

13 We did a fixed stratum, case-crossover analysis.

In the fixed stratum design, externally fixed time strata are used as the source of control days, a feature which ensures the validity of standard analytical methods.

In the fixed stratum design, externally fixed time strata are used as the source of control days, which ensures the validity of standard analytical methods.

Calibration was assessed by comparing absolute observed mortality with predicted mortality in fixed risk strata (for example 0 0.099, 0.1 0.199, and so on) using the Hosmer-Lemeshow chi-square H statistic.

Changes from baseline in primary and secondary efficacy measures for quetiapine 300 or 600 mg/day versus placebo were evaluated using analysis of covariance (ANCOVA) with baseline score as the covariate, treatment and bipolar diagnosis strata as fixed effects, and country (EMBOLDEN I and II) or center (BOLDER I and II) as a random effect.

The indexes were analyzed as numeric outcomes using a random model approach, with clinic and subject as random factors, and arm and strata as fixed factors.

The time-stratified case crossover uses fixed and disjointed time strata (e.g., calendar month), so the overlap bias is avoided [ 26].

The ANCOVA model included the percentage change in eGFR between baseline and end of follow-up as the dependent variable and treatment, region, eGFR stratum, UACR stratum (> 300 versus ≤ 300 μg/mg) as fixed effects with a strata interaction term, and baseline eGFR as the covariate.

Within each stratum, a fixed block randomisation size of 10 is used.