Fig. 2
From: Nonlinear relationship between visceral adiposity index and lung function: a population-based study
Stratified analysis for Relationship of VAI levels with FEV1% predicted in various subgroups divided at 14 (a VAI ≤ 14, b VAI ≥ 15) in male participants. Each subgroup analysis adjusted for age, education level, gross annual income, marital status, active smoking, passive smoking, hypertension, COPD, chronic bronchitis, osteoporosis, fracture, peptic ulcer, cholecystitis, and CKD. FEV1 forced expiratory volume in 1 s, VAI visceral adiposity index, COPD Chronic obstructive pulmonary disease, CKD chronic kidney disease