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Table 1 Preoperative and intraoperative patients’ characteristics

From: Multicenter randomized controlled trial comparing digital and traditional chest drain in a VATS pulmonary lobectomy cohort: interim analysis

  Digital group
(n = 94)
Traditional group
(n = 115)
ASMD
Age, years, mean (SD) 67 (9) 66 (11) 0.10
Male, n (%) 57 (60.6) 61 (53.0) 0.15
Co-morbidity, n (%) 68 (72.3) 89 (77.4) 0.05
COPD, n (%) 15 (16.0) 12 (10.4) 0.17
Asthma, n (%) 3 (3.2) 3 (2.6) 0.04
FEV1, %, mean (SD) 96.6 (20.2) 98.9 (20.4) 0.11
FVC, %, mean (SD) 101.6 (19.9) 103.9 (18.9) 0.12
Tiffeneau, %, mean (SD) 77.7 (9.7) 76.8 (12.0) 0.08
DLCO, %, mean (SD) 83.1 (18.4) 81.6 (19.0) 0.08
Induction CT, n(%) 6 (6.4) 3 (2.6) 0.18
Induction RT, n(%) 0 (0.0) 0 (0.0) 0.0
Surgical time, min, mean (SD) 164 (67) 169 (65) 0.08
Hemostatic devices, n (%) 49 (52.1) 52 (45.2) 0.14
Type of lobectomy, n (%)
 Right upper lobectomy 24 (25.5) 35 (30.4) 0.11
 Right middle lobectomy 6 (6.4) 8 (6.9) 0.00
 Right lower lobectomy 15 (15.9) 15 (13.0) 0.08
 Left upper lobectomy 32 (34.0) 28 (24.3) 0.20
 Left lower lobectomy 17 (18.1) 29 (25.2) 0.15
Lymphadenectomy, n (%) 93 (98.9) 113 (98.3) 0.05
 Systematic 72 (76.6) 86 (74.8) 0.04
 Sampling 21 (22.3) 27 (23.5) 0.03
  1. ASMD Absolute standardized mean difference, SD Standard deviation, COPD Chronic obstructive pulmonary disease, FEV1 Forced expiratory volume at 1 s, FVC Forced vital capacity, DLCO Diffusion Lung CO, CT Chemotherapy, RT Radiation therapy. No significant differences were observed (p > 0.05)