Table 2.

Risk factor analysis in the retrospective cohort.

	Cohort (n=68)			Underweight cohort BMI <25 kg/m2 (n=57)
	OR	95% CI	P-value	OR	95% CI	P-value
BMI	0.290	0.064–1.316	0.109	0.206	0.040–1.074	0.061
FFMI	0.589	0.129–2.679	0.493	0.457	0.089–2.336	0.457
SMMI	0.545	0.124–2.388	0.545	0.433	0.088–2.129	0.303
FMI	0.292	0.100–0.850	0.024*	0.253	0.664–0.996	0.049*
LTF	3.362	0.899–12.569	0.072	4.528	1.066–19.232	0.041*

^*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.