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Table 2 Curve estimation in analyzing the relationship of HDL-C and sPLA2-IIA

From: Phospholipase A2 group IIA correlates with circulating high-density lipoprotein cholesterol and modulates cholesterol efflux possibly through regulation of PPAR-γ/LXR-α/ABCA1 in macrophages

Equation Model summary Parameter estimates
R Square F df1 df2 Sig Constant b1 b2 b3
Linear 0.035 4.621 1 129 0.033 1.051 6.08E−06   
Logarithm 0.028 3.739 1 129 0.055 0.601 0.057   
Inverse 0.007 0.86 1 129 0.355 1.125 − 111.321   
Quadratic 0.035 2.293 2 128 0.105 1.049 6.31E−06 − 6.29E−12  
Cubic 0.038 1.689 3 127 0.173 1.011 1.72E−05 − 6.98E−10 1.07E−14
Compound 0.036 4.765 1 129 0.031 1.027 1   
Power 0.03 3.972 1 129 0.048 0.673 0.053   
S 0.008 0.988 1 129 0.322 0.097 − 108.787   
Growth 0.036 4.765 1 129 0.031 0.027 5.63E−06   
Exponential 0.036 4.765 1 129 0.031 1.027 5.63E−06   
Logistic 0.036 4.765 1 129 0.031 0.973 1   
  1. Independent variable: sPLA2-IIA; Dependent variable: HDL-C; df degree of freedom, HDL-C high-density lipoprotein cholesterol, sPLA2-IIA secretory phospholipase A2 type IIA