Inverted L-shape association between a body shape index and peak expiratory flow among middle-aged and older adults: findings from the China Health and Retirement Longitudinal Study (CHARLS)

Table 4 Association of continuous ABSI** with AL and SAL risk (Multiple imputation)

	Categories	Model 1		Model 2		Model 3		Model 4
	Categories	OR (95%CI)	P value	OR (95%CI)	P value	OR (95%CI)	P value	OR (95%CI)	P value
All	AL	1.15 (1.09–1.21)	< 0.001	1.17 (1.09–1.25)	< 0.001	1.17 (1.09–1.27)	< 0.001	1.17 (1.08–1.28)	< 0.001
All	SAL	1.36 (1.27–1.46)	< 0.001	1.30 (1.19–1.41)	< 0.001	1.29 (1.18–1.40)	< 0.001	1.30 (1.19–1.41)	< 0.001
Male	AL	1.26 (1.15–1.39)	< 0.001	1.17 (1.05–1.31)	0.004	1.18 (1.05 ~ 1.33)	0.007	1.18 (1.03–1.34)	0.017
Male	SAL	1.58 (1.38–1.80)	< 0.001	1.37 (1.20–1.56)	< 0.001	1.36 (1.19 ~ 1.56)	< 0.001	1.38 (1.20–1.57)	< 0.001
Female	AL	1.32 (1.21–1.43)	< 0.001	1.16 (1.06–1.27)	0.001	1.16 (1.05–1.29)	0.003	1.17 (1.05–1.30)	0.006
Female	SAL	1.52 (1.37–1.70)	< 0.001	1.27 (1.14–1.42)	< 0.001	1.27 (1.13–1.42)	< 0.001	1.27 (1.14–1.42)	< 0.001

ABSI a body shape index, TC total cholesterol, TG triglycerides, LDL low-density lipoprotein, SAL severe airflow limitation, AL airflow limitation, OR odds ratio, CI confidence interval
Model 1: not adjusted
Model 2: adjusted for age, sex, race, residence, educational status, marital status, sleep duration
Model 3: adjusted for model 2, additionally adjusted for smoking status, drinking status, hypertension, diabetes, heart diseases, stroke, dyslipidemias, kidney diseases
Model 4: adjusted for model 3, additionally adjusted for creatinine, glucose, TC, TG, LDL, Cystatin C
^**Continuous variable: ABSI was scaled by a factor of 100

ISSN: 1476-511X