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Table 1 Preoperative Characteristics of Patients and Tumors

From: The application analysis of 8F ultrafine chest drainage tube for thoracoscopic lobectomy of lung cancer

Characteristics Before PSM After PSM
Group A (n = 77) Group B (n = 92) P-value Group A (n = 67) Group B (n = 67) P-value
Gender (%)    0.552    0.596
Male 51.95 56.52   58.21 62.69  
Female 48.05 43.48   41.79 37.31  
Age (years) 59.35 ± 10.98 60.57 ± 9.13 0.577 59.60 ± 11.76 60.64 ± 9.35 0.570
Tumor location (%)    0.782    0.633
Upper right 33.77 30.43   37.31 35.82  
Middle right 6.49 9.78   5.97 5.97  
Lower right 20.78 15.22   23.88 14.93  
Upper left 19.48 22.83   22.39 26.87  
Lower left 19.48 21.74   10.45 16.42  
Postoperative pathological staging (%)    0.018    0.720
IA 77.92 55.43   74.63 68.66  
IB 3.90 17.39   4.48 5.97  
IIA 5.19 5.43   5.97 2.99  
IIB 5.19 7.61   5.97 7.46  
IIIA 7.79 14.13   8.96 14.93  
Pathological types (%)    0.619    0.360
Adenocarcinoma 68.83 65.22   70.15 62.69  
Squamous cell carcinoma 31.17 34.78   29.85 37.31  
  1. Scale variables were expressed as median and range, and ordinal and nominal parameters as absolute numbers, and percent.