Table 4.
Threshold effect analysis between AA intake and the prevalence of ED before and after PSM
| Outcome: ED | OR (95% CI), P | |
|---|---|---|
| Before PSM | After PSM | |
| Model 1 | ||
| Linear effect | 0.33 (0.20, 0.56), < 0.001 | 0.36 (0.20, 0.65), < 0.001 |
| Model 2 | ||
| Inflection point (K) | 0.331 | 0.109 |
| AA < K | 0.44 (0.20, 0.96), 0.038 | 0.19 (0.01, 2.90) 0.233 |
| AA > K | 0.19 (0.05, 0.72), 0.014 | 0.40 (0.19, 0.85) 0.016 |
| Log likelihood ratio | 0.341 | 0.645 |
Note: All covariates were adjusted in this model. Abbreviations: AA, arachidonic acid; ED, erectile dysfunction; PSM, propensity score matching; OR, odds ratio; CI, confidence interval