Figure 3.

Association between dietary niacin intake and erectile dysfunction in different subgroups before PSM. Analyses were adjusted for age, race, marital status, education level, PIR, BMI categories, recreational activity, smoking status, drinking status, total daily energy intake, CVD, hypercholesterolemia, hypertension, diabetes, as well as testosterone levels. OR: odds ratio; CI: confidence interval; BMI: body mass index; CVD: cardiovascular disease; PSM: propensity score matching; PIR: poverty-to-income ratio.