Table 4 The result of the two-piecewise logistic regression model for PDR
PDR (OR,95%CI) | P value | |
|---|---|---|
Fitting model by standard logistic regression | 1.009 (0.997, 1.022) | 0.1499 |
Fitting model by two-piecewise logistic regression | ||
Inflection point of RC | 39.0 mg/dL | |
≤39.0 mg/dL | 1.021 (1.004, 1.038) | 0.0145 |
> 39.0 mg/dL | 0.988 (0.966, 1.012) | 0.3340 |
P for the log-likelihood ratio test | 0.028 | |