Table 2.

Bivariate correlation analysis between plasma leptin levels and clinical variables among 62 patients with IPF.

Cinical variables	Spearman correlation coefficients	p value
BMI (kg/m2)	0.418	0.007∗∗
KL-6 (U/mL)	0.369	0.005∗∗
WBC (×109)	0.154	0.232
LDH (U/L)	0.367	0.003∗∗
ESR (mm/h)	0.169	0.201
CRP (mg/L)	0.271	0.033∗
PaO2/FiO2	−0.275	0.032∗

  ^∗ p < 0.05; ^∗∗ p < 0.01.