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Table 2 Unadjusted postoperative outcomes 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%)
Outcomes No. % No. % No. % No. % P
LOS (day), median (IQR) 10 (9–12) 9 (8–11) 9 (8–11) 9 (8–10) 0.003
Operative mortality 4 10.0 15 2.3 2 0.5 1 1.5 0.002
Perioperative complications
 Cardiovascular 5 12.5 47 7.1 25 5.8 7 10.3 0.635
 Respiratory 9 22.5 54 8.2 20 4.7 4 5.9 0.001
 Other 3 7.5 77 11.6 51 11.9 12 17.6 0.405
 Overall 12 30.0 149 22.5 93 21.7 22 32.4 0.176
  1. Italic values: P < 0.05 was significant. Continuous variable were compared using Kruskal-Wallis H test. Categorical variables were compared using chi-square test or Fisher’s exact test
  2. BMI body mass index, LOS length of stay, IQR interquartile range