Table 3.
Stratified associations between AA intake and the prevalence of ED before and after PSM
| Subgroup | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | P | P for interaction | OR (95% CI) | P | P for interaction | |
| Age (years) | 0.239 | 0.456 | ||||
| < 40 | 0.54 (0.21, 1.38) | 0.197 | 0.52 (0.16, 1.71) | 0.285 | ||
| ≥ 40 | 0.29 (0.15, 0.55) | < 0.001 | 0.32 (0.15, 0.65) | 0.002 | ||
| BMI (kg/m2) | 0.857 | 0.823 | ||||
| < 25 | 0.36 (0.13, 1.01) | 0.053 | 0.31 (0.09, 1.05) | 0.061 | ||
| 25-29.99 | 0.30 (0.13, 0.69) | 0.005 | 0.31 (0.12, 0.81) | 0.017 | ||
| ≥ 30 | 0.42 (0.16, 1.06) | 0.066 | 0.56 (0.20, 1.57) | 0.274 | ||
| Race | 0.022 | 0.061 | ||||
| Mexican American | 1.16 (0.37, 3.66) | 0.807 | 1.61 (0.42, 6.12) | 0.483 | ||
| Non-Hispanic Black | 0.36 (0.13, 1.01) | 0.051 | 0.40 (0.12, 1.37) | 0.147 | ||
| Non-Hispanic White | 0.17 (0.07, 0.37) | < 0.001 | 0.20 (0.09, 0.49) | < 0.001 | ||
| Others | 0.85 (0.11, 6.59) | 0.879 | 0.15 (0.01, 2.44) | 0.183 | ||
| Education | 0.010 | 0.009 | ||||
| Less than high school | 0.88 (0.40, 1.91) | 0.741 | 1.10 (0.46, 2.67) | 0.826 | ||
| High school | 0.18 (0.06, 0.53) | 0.002 | 0.19 (0.06, 0.63) | 0.007 | ||
| More than high school | 0.15 (0.06, 0.37) | < 0.001 | 0.15 (0.05, 0.42) | < 0.001 | ||
| Hypertension | 0.429 | 0.576 | ||||
| No | 0.36 (0.19, 0.67) | 0.001 | 0.39 (0.19, 0.78) | 0.009 | ||
| Yes | 0.27 (0.10, 0.72) | 0.009 | 0.26 (0.08, 0.83) | 0.022 | ||
| Diabetes | 0.260 | 0.312 | ||||
| No | 0.37 (0.21, 0.66) | < 0.001 | 0.40 (0.21, 0.76) | 0.006 | ||
| Yes | 0.19 (0.04, 0.85) | 0.030 | 0.16 (0.02, 1.15) | 0.069 | ||
| Cardiovascular disease | 0.573 | 0.565 | ||||
| No | 0.35 (0.20, 0.60) | < 0.001 | 0.38 (0.20, 0.72) | 0.003 | ||
| Yes | 0.28 (0.04, 1.85) | 0.185 | 0.21 (0.03, 1.62) | 0.133 | ||
| Vigorous activity | 0.150 | 0.286 | ||||
| No | 0.28 (0.15, 0.53) | < 0.001 | 0.32 (0.16, 0.65) | 0.002 | ||
| Yes | 0.48 (0.18, 1.33) | 0.158 | 0.64 (0.18, 2.28) | 0.494 | ||
| Moderate activity | 0.478 | 0.699 | ||||
| No | 0.39 (0.20, 0.77) | 0.007 | 0.40 (0.18, 0.89) | 0.025 | ||
| Yes | 0.26 (0.11, 0.59) | 0.002 | 0.30 (0.11, 0.78) | 0.014 | ||
| Smoking status | 0.402 | 0.518 | ||||
| Non smoker | 0.21 (0.09, 0.50) | < 0.001 | 0.25 (0.09, 0.69) | 0.007 | ||
| Previous smoker | 0.53 (0.20, 1.38) | 0.190 | 0.47 (0.16, 1.38) | 0.170 | ||
| Current smoker | 0.51 (0.19, 1.34) | 0.170 | 0.58 (0.19, 1.82) | 0.354 | ||
Notes: Bold fonts indicate P for interaction < 0.05. All covariates were adjusted in this model without adjusting the stratified variable itself. Abbreviations: AA, arachidonic acid; ED, erectile dysfunction; BMI, body mass index; PSM, propensity score matching; OR, odds ratio; CI, confidence interval