Association of body mass index and outcomes following lobectomy for non-small-cell lung cancer

Table 4 Unadjusted single complications stratified by weight group

	BMI < 18.5		BMI 18.5–24.9		BMI 25–29.9		BMI ≥ 30
	Underweight		Normal		Overweight		Obesity
	n = 40 (3.3%)		n = 662 (55.3%)		n = 428 (35.7%)		n = 68 (5.7%)
Single complications	No.	%	No.	%	No.	%	No.	%	P
Pleural effusion	2	5.0	50	7.6	28	6.5	9	13.2	0.243
Arrhythmia	3	7.5	35	5.3	18	4.2	5	7.4	0.735
Pneumonia	6*	15.0	28	4.2	14	3.3	2	2.9	0.029
Prolonged air leaks	40	10.0	19	2.9	3**	1.5	1	2.3	0.001
Cardiac insufficiency	1	2.5	11	1.7	5	1.2	1	1.5	0.496
Heart failure	0	0.0	7	1.1	0	0.0	0	0.0	0.076
Chylothorax	10	2.5	7	1.1	6	1.4	4	5.9	0.062
Atelectasis	00	0.0	7	1.1	6	1.4	2	2.9	0.481

Italic values: P < 0.05 was significant. Difference statistically significant (reference group: normal). To correct for multiple outcome testing, the threshold for significance level was 0.05/3 = 0.017. *P = 0.010, **P = 0.013. Categorical variables were compared using chi-square test or Fisher’s exact test
BMI body mass index

ISSN: 1477-7819