For all Cox regressions, simple contrasts were used, comparing the injury hazard at a baseline stratum of a variable (defined with a hazard ratio (HR) of 1.00) with other strata of the same variable.
For instance, the strata formed between time-1 and time-2 in the simulated succession should be compared with the strata of the same time interval, time-1 and time-2 in the time-calibrated observed succession.
And the rhythm section juxtaposed flamenco rhythms like the triple-time, hand-clapping bulería with rumba, bolero and jazz, making transitions so natural they sounded like different strata of the same landscape.
The association between fetal genotype and birth weight Z-score was analysed by linear regression within each stratum, within each study, with the same covariables and exclusions as used in the analyses of maternal genotype.
Each of these controls within each stratum were matched with controls with the same length of stay (i.e. Group 1 consists of patients who developed delirium within the first day as cases and patients who stayed 1 day in the hospital but with no sign of delirium as controls).
In addition, when analyzing by age strata, with adjustment for the same variables in Model 3, high TG was related to villous-rich adenoma in both older subjects (OR = 4.03, 95%CI: 1.68-9.66) and in younger subjects (OR = 5.24, 95%CI: 0.95-28.90), altheugh the later showed marginal statistical significance (p = 0.057) (tables not showed).
When a case patient had one underlying condition and was categorized as risk stratum 2, control subjects were selected with the same medical condition.
For the first pair, variables of type of tuberculosis, presence of the sequences of both genes, site of the aortic lesion, and presence of granuloma showed an inverse association with the socioeconomic level, the BMI, and the age stratum, and in the same sense with the exposure variable.
Subsequently, a set of strata is created which contain all observations with the same values of the coarsened data.
The Cox proportional hazards model including propensity score strata demonstrated essentially the same results (Table 3).
