Analysis of variance table of the patients' age as a function of genotype (Beijing, EAI4), sex of the patient, location (urban vs. rural), and sampling (hospital vs. population).

*: Estimates, deviance and their p-values are calculated by correcting for possible confounding effects of all the other explanatory variables. (see Materials and methods). We applied two different contrasts to test the effects of Beijing and EAI4-VNM genotypes.