Table 1-wrap> shows the distribution of all survey participants by age, education, cohabitation and menopausal status at baseline, and in separate strata of menopausal status.
Further, no significant associations were seen across strata of menopausal status, smoking, and diabetes in multivariable-adjusted models except for adjusted OR for continuous cadmium intake in postmenopausal women.
The inverse association for water intake was present across all strata of smoking status.
For the other genes no differences in ORs were seen between the strata of menopause status.
This inverse association held across all strata of smoking status and THM exposure, and for both men and women.
Estimates of RR for ESCC related to mid BP z-scores were similar in all strata of smoking status, albeit statistically significant only in current smokers (Table 5).
However, this relationship was true in the less urban (< 100,000 inhabitants) and most urban (≥ 1,000,000 inhabitants) areas, but not in the intermediate strata of rural/urban status, where the least-exposed children belonged to the highest socioeconomic category.
Due to the small number of cases in each stratum of smoking status or alcohol consumption, the number of covariates included had to be reduced in these analyses.
The exposure was assessed on an objective basis, using a geographic information system, with comparable quality for all the included children, at least within a given stratum of rural/urban status.
For each stratum of ERPR status, we estimated odds ratios (ORs) and 95% confidence intervals (CIs) as measures of relative risk using unconditional logistic regression methods (Breslow and Day, 1980), while controlling for a number of potentially confounding variables that we had selected a priori.
We analyzed the effect of exposure in separate models within strata of sex, smoking status, length of school attendance, and fruit consumption and compared the linear NOx estimates between the strata using the Wald test.
