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Table 1 Patients’ characteristics: comparison between group A (monopolar electric hook) and group B (harmonic ACE plus®)

From: Energy devices safety and impact on video-assisted thoracoscopic lung lobectomy postoperative course: monopolar electrocautery versus ultrasonic dissector

Patients’ characteristics Group A
(n = 79)
Group B
(n = 61)
p-value
Age, median (IQR) years 69 (62–75) 72 (64–76) 0.56
Male, n (%) 41 (52) 42 (69) 0.043
BMI, median (IQR) kg/m2 25 (22–28) 26 (24–29) 0.58
Current or former smoker, n (%) 58 (73) 47 (77) 0.62
FEV1, median (IQR) % of predicted 99 (83–112) 106 (90–119) 0.16
COPD, n (%) 15 (19) 15 (25) 0.42
Cardiac comorbidity, n (%) 24 (30) 14 (23) 0.33
Diabetes, n (%) 11 (14) 11 (18) 0.51
Previous malignancy, n (%) 29 (37) 17 (28) 0.27
Pleural adhesiolysis, n (%) 21 (31) 19 (37) 0.51
Lower lobe lobectomy, n (%) 22 (28) 31 (51) 0.005
Number of excised lymph nodes, median (IQR) 8 (6–11) 9 (5–13) 0.20
Intraoperative blood loss ≥100 ml, n (%) 15 (23) 14 (33) 0.26
Tumor size, median (IQR) cm 1.8 (1.5–2.8) 1.9 (1.5–3.0) 0.76
Tumor histology, n (%)    0.76
 Adenocarcinoma 52 (66) 45 (74)  
 Squamous cell carcinoma 12 (15) 9 (15)  
 Neuroendocrine tumor 12 (15) 5 (8)  
 Other histologies 3 (4) 2 (3)  
Pathological stage, n (%)    0.80
 I 60 (76) 49 (80)  
 II 15 (19) 8 (13)  
 III 4 (5) 4 (7)  
  1. BMI body mass index, COPD chronic obstructive pulmonary disease, FEV1 forced expiratory volume in 1 s, IQR interquartile range