Sentence examples for stratum variable from inspiring English sources

Ration was treated as a stratum variable (strata option) to allow for non proportional hazards when comparing the effect of egg size between the two food treatments [88].

Homogeneity among stratum variable related ORs was tested [ 25].

Data were further stratified by EBV infection or genotypes to evaluate stratum variable related ORs.

Age at baseline in 1-year categories was entered as a stratum variable.

Thus, to realize an efficiency benefit through counter-matching, the sampling stratum variable should be fairly well correlated with the factor of interest.

The within-subject association between the incidence of hypernatremia and DDAVP administration was examined with exact conditional logistic regression (with the patient fitted as the stratum variable).

The data were further stratified by age, age at menarche (years), menstrual history, BMI, pathological type, stage, estrogen receptor status, progesterone receptor status and family history of cancer to evaluate the stratum variable-related ORs among the CD44 genotypes.

A stratified sampling method was used, with stratum variables being region (six regions in the United Kingdom), household size and age of main shopper.

We evaluated the differences in the associations between miRNA and MN frequency in workers with different drinking status, smoking status, or age group by modeling interaction terms of (miRNA * stratum variables) in Poisson regression models.

Cox proportional hazard assumptions were tested by visual examination of log-minus-log plots showing parallelism among the selected strata variable (responding status).

Sampling errors were estimated by the Taylor series (linearization) method to take account of stratification and clustering using the provided 'masked variance pseudo-psu' and 'pseudo-stratum' variables.