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Two-piecewise linear regression and logarithmic likelihood ratio test explained the threshold effect analysis of METS-VF index with ED prevalence.
| METS-VF Index | ULR Test | PLR Test | LRT test |
|---|---|---|---|
| OR (95% CI) | OR (95% CI) | P value | |
| < 6.63 | 3.47 (2.83, 4.24) | 1.82 (1.42, 2.33) | < 0.0001 |
| ≥ 6.63 | 20.28 (11.63, 35.38) |
ULR, univariate linear regression; PLR, piecewise linear regression; LRT, logarithmic likelihood ratio test, statistically significant: p<0.05.
