Urinary Biomarkers of Oxidative Stress in Aging: Implications for Prediction of Accelerated Biological Age in Prospective Cohort Studies

Table 1

Characteristics of the participants. For each age group, distribution of males, females, ex-smokers, and never-smokers are shown.

Age groups	Female nonsmoker	Female ex-smoker	Male nonsmoker	Male ex-smoker	BMI
20-29 y. o.	10	1	10	5
30-44 y. o.	7	2	10	5
45-59 y. o.	6	2	5	6
61-75 y. o.	5	3	9	5
61-70 y. o.	4	1	6	15
71-80 y. o.	6	5	0	3