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Table 2 Characteristics of the propensity score-matched patients

From: Comparison of the outcomes of stereotactic body radiotherapy versus surgical treatment for elderly (≥70) patients with early-stage non-small cell lung cancer after propensity score matching

Factor SBRT
(N = 35)
Surgery
(N = 35)
p-value
Age (years)
 Median (range) 76 (70–83) 74 (70–83) 0.226
Gender
 Male 22 22 1.000
 Female 13 13  
Tumor size (cm)
 Median (range) 2.1 (1.4–5.0) 2.2 (1.2–4.0) 0.982
T stage
 T1 28 27 0.919
 T2 7 8  
Histology
 NSCLC-NOS 6 2 0.011
 SCC 9 11  
 Ade 16 22  
 probable 4 0  
FEV1
 Median (range) 1.58 (0.55–2.40) 1.53 (0.87–2.62) 0.872
FEV1/FVC (%)
 Median (range) 101 (64–129) 103 (54–125) 0.765
CCI (%)
 0 27 (77) 24 (68) 0.503
 1–2 7 (18) 9 (26)  
 ≥ 3 1 (3) 2 (6)  
KPS
 Median (range) 90 (70–100) 90 (80–100) 0.097
Tumor location
 RUL 9 10 0.084
 RML 8 5  
 RLL 7 6  
 LUL 5 9  
 LLL 6 5  
SBRT dose
 50Gy/4fx 8   N/A
 50Gy/5fx 19   
 50Gy/10fx 5   
 60Gy/8fx 2   
 70Gy/10fx 1   
Operation
 lobectomy   29 N/A
 sublobar resection   6  
 VATS   26  
 thoracotomy   9  
  1. SBRT stereotactic body radiotherapy, NSCLC non–small cell lung cancer, NOS not otherwise specified, Ade adenocarcinoma, SCC squamous cell carcinoma, FEV1 forced expiratory volume in 1 s, FEV1/FVC% FEV1 to forced vital capacity ratio, CCI Charlson comorbidity index, KPS Karnofsky performance status, fx fraction, RUL right upper lobe, RML right middle lobe, RLL right lower lobe, LUL left upper lobe, LLL left lower lobe, VATS video-assisted thoracic surgery