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Table 1 Baseline demographics and characteristics of the patients before and after matching

From: Three-port single-intercostal versus uniportal thoracoscopic segmentectomy for the treatment of lung cancer: a propensity score matching analysis

  All patients p value Propensity score-matched patients p value
Three-port
(n = 147)
Single-port
(n = 397)
Three-port
(n = 143)
Single-port
(n = 143)
Age (years) 55.2 (13.7) 53.2 (12.6) 0.108 54.8 (13.7) 54.6 (11.9) 0.894
Sex     < 0.001    0.884
 Male 30 (20.4%) 146 (36.8%)   30 (21.0%) 29 (20.3%)  
 Female 117 (80.3%) 251 (63.2%)   113 (79.0%) 114 (79.7%)  
 FEV1 (L) 2.5 (0.7) 2.6 (0.7) 0.084 2.5 (0.7) 2.5 (0.6) 0.552
Smoking history    0.048    0.557
 Current or ever 16 (10.9%) 71 (17.9%)   16 (11.2%) 13 (9.1%)  
 Never 131 (89.1%) 326 (82.1%)   127 (88.8%) 130 (90.9%)  
 BMI (kg/m2) 23.1 (3.1) 23.0 (2.9) 0.736 23.1 (3.1) 23.2 (2.9) 0.702
 Tumor size (cm) 1.1 (0.5) 1.1 (0.4) 0.849 1.1 (0.5) 1.1 (0.4) 0.374
Location    0.380    0.591
 LUL 44 (29.9%) 96 (24.2%)   41 (28.7%) 38 (26.6%)  
 LLL 19 (12.9%) 55 (13.9%)   19 (13.3%) 24 (16.7%)  
 RUL 56 (38.1%) 147 (37.0%)   56 (39.2%) 48 (33.6%)  
 RML 0 (0%) 0 (0%)   0 (0%) 0 (0%)  
 RLL 28 (19.0%) 99 (24.9%)   27 (18.9%) 33 (23.1%)  
Pathology    0.397    0.678
 AIS 30 (20.4%) 103 (25.9%)   30 (21.0%) 31 (21.7%)  
 MIA 43 (29.2%) 112 (28.2%)   43 (30.1%) 49 (34.3%)  
 IA 74(43.5%) 182(45.8%)   70 (49.0%) 63 (44.1%)  
Stage    0.390    0.689
 IA1 40 (27.2%) 86 (21.7%)   37 (25.9%) 32 (22.4%)  
 IA2 34 (23.1%) 96 (24.2%)   33 (23.1%) 31 (21.7%)
  1. Data are presented as the n (%) or the mean (SD). LUL left upper lobe, LLL Left lower lobe, RUL Right upper lobe, RLL Right lower lobe, AIS Adenocarcinoma in situ, MIA Minimally invasive adenocarcinoma, IA Invasive adenocarcinoma