Demographic, clinical, and biochemical data.

SD, standard deviation; COS, calcium oxalate stones; NCOS, non-calcium oxalate stones; AAM, age at menopause; TSM, time since menopause ; BMI, body mass index; WDC, water drink consumption; WET, working environment temperature; HTN, hypertension; DM, diabetes mellitus; RA, rural area of life; T, testosterone; E2, estradiol. P-values were determined using the Wilcoxon rank sum test, or the chi-square tests between all patients and controls subjects. Post-hoc analyses were performed for comparison of variables between the following cohorts: COS, NCOS, controls, COS versus NCOS, COS versus controls, and NCOS versus controls, with p-values<0.05 considered significant."* "indicate group is significantly from the control."#" indicate group is significantly from the COS.