Clinical Variables Associated with Telomere Length.

Relative T/S ratios were logarithm transformed prior to analysis. The effect sizes (betas) are reported as mean differences in the logarithm of T/S ratio associated with a one-unit increase in a quantitative predictor, or with a particular category of a qualitative predictor, compared to the reference group. Corresponding changes in T/S ratio are multiplicative, i.e., T/S ratios differ by a factor ebeta. Interactions between age and gender and between age and ethnicity were not statistically significant and were not included in the final model.