Table 3 Threshold effect analysis of sleep duration and albumin using piece-wise linear regression
Models | β (95%CI) | P value |
|---|---|---|
Model I | ||
One line effect | 0.04 (0.00, 0.08) | 0.0366 |
Model II | ||
Inflection point (K) | 7.5 | |
sleep duration \(<\) 7.5 | 0.30 (0.23, 0.38) | \(<\) 0.0001 |
sleep duration \(\ge\) 7.5 | -0.18 (-0.25, -0.12) | \(<\) 0.0001 |
P for log-likelihood ratio test | \(<\) 0.001 | |