In the sensitivity analysis where BMI and diabetes data were imputed (n = 19,524), multivariable linear regression showed a 5.22% decrease in PSA per 5 kg/m2 increase in BMI (95% CI 3.67–6.80) and univariable regression showed a 13.33% increase in PSA per 5-year increase in age (95% CI 12.14–14.54). Here, KLK3 is linked to diabetes mellitus.