Table 3 Threshold effect analysis of LAP and VAI on OSA using a two-piecewise logistic regression model in adults in the NHANES 2015–2018
Threshold effect analysis | OSA OR (95%CI) P-value |
|---|---|
LAP | |
Inflection point of LAP (K) | 65.684 |
<K slope | 1.009 (1.004, 1.013) 0.0001 |
>K slope | 0.999 (0.996, 1.002) 0.6561 |
Log-likelihood ratio test | 0.003 |
VAI | |
Inflection point of VAI (K) | 0.428 |
<K slope | 19.396 (2.155, 174.605) 0.0082 |
>K slope | 1.069 (1.013, 1.128) 0.0151 |
Log-likelihood ratio test | 0.008 |