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Table 4 Unadjusted single complications stratified by weight group

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

  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
  1. 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
  2. BMI body mass index