Table 3 Threshold effect analysis of SII on total percentage fat, android percentage fat and total abdominal fat area using two-piecewise linear regression model
Adjusted β (95% CI) | P value | |
|---|---|---|
Total percentage fat | ||
Fitting by linear regression model | 0.28( 0.19, 0.38) | < 0.0001 |
Fitting by two-piecewise linear regression model | ||
Inflection point | 824.93 (log2SII = 9.46) | |
log2SII < 9.46 | 0.33( 0.13, 0.54) | 0.003 |
log2SII ≥ 9.46 | -0.13( -0.71, 0.44) | 0.64 |
Log likelihood ratio test | < 0.0001 | |
Android percentage fat | ||
Fitting by linear regression model | 0.36( 0.24, 0.49) | < 0.0001 |
Fitting by two-piecewise linear regression model | ||
Inflection point | 749.22 (log2SII = 9.35) | |
log2SII < 9.35 | 0.51( 0.24, 0.77) | < 0.001 |
log2SII ≥ 9.35 | -0.48(-1.11, 0.14) | 0.12 |
Log likelihood ratio test | < 0.0001 | |
Total abdominal fat area | ||
Fitting by linear regression model | 5.81( 4.28, 7.35) | < 0.0001 |
Fitting by two-piecewise linear regression model | ||
Inflection point | 855.21 (log2SII = 9.76) | |
log2SII < 9.76 | 7.11( 4.44, 9.78) | < 0.0001 |
log2SII ≥ 9.76 | -0.38( -15.38, 14.61) | 0.96 |
Log likelihood ratio test | < 0.0001 | |