Table 3 Threshold effect analyses of association between VAI levels and lung function FEV1% predicted、FVC% predicted using two-piecewise regression models in male participants
From: Nonlinear relationship between visceral adiposity index and lung function: a population-based study
VAI | *Unadjusted | P-value | VAI | ΔAdjusted | P-value |
|---|---|---|---|---|---|
Β (95% CI) | Β (95% CI) | ||||
FEV1% predicted | |||||
< 14.0 | 0.78 (0.33, 1.23) | < 0.001 | < 14.6 | 0.76 (0.30, 1.21) | 0.001 |
≥ 14.0 | − 1.14 (− 1.86, − 0.42) | 0.002 | ≥ 14.6 | − 1.17 (− 1.90, − 0.45) | 0.002 |
Likelihood ratio test p | < 0.001 | < 0.001 | |||
FVC% predicted | |||||
< 14.1 | 0.50 (0.07, 0.93) | 0.022 | < 14.3 | 0.50 (0.06, 0.94) | 0.025 |
≥ 14.1 | − 1.38 (− 2.09, − 0.66) | < 0.001 | ≥ 14.3 | 1.36 (− 2.08, − 0.64) | < 0.001 |
Likelihood ratio test p | < 0.001 | < 0.001 | |||