Table 3.

Risk factor analysis for predicting the risk of an acute exacerbation (AE) of chronic obstructive pulmonary disease (COPD) in the prospective cohort.

	Cohort (n=50)			Underweight cohort BMI <25 kg/m2 (n=41)
	OR	95% CI	P-value	OR	95% CI	P-value
BMI	0.651	0.084–5.015	0.680	0.822	0.089–7.594	0.863
FFMI	1.081	0.136–8.618	0.941	1.341	0.149–12.108	0.794
SMMI	1.047	0.133–8.228	0.966	1.281	0.146–11.239	0.823
FMI	0.879	0.624–1.229	0.461	1.490	0.189–11.770	0.705
LTF	9.307	0.905–95.737	0.061	8.971	1.179–68.271	0.034*

^*P<0.05.

BMI – body mass index; SMMI – skeletal muscle mass index; FFMI – fat-free mass index; LTF – lean-to-fat; OR – odds ratio; CI – confidence interval.