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Table 1 Characteristics of the entire patient cohort

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 = 99)
Surgery
(N = 106)
p-value
Age (years)
 Median (range) 78 (70–88) 73 (70–83) 0.001
Gender
 Male 77 61 0.001
 Female 22 45  
Tumor size (cm)
 Median (range) 2.2 (1.0–5.0) 2.0 (1.0–5.0) 0.621
T stage
 T1 83 86 0.740
 T2 16 20  
Histology
 NSCLC-NOS 18 4 0.001
 SCC 32 25  
 Ade 35 77  
 probable 14 0  
FEV1
 Median (range) 1.26 (0.38–2.51) 1.74 (0.78–3.04) 0.001
FEV1/FVC (%)
 Median (range) 91 (38–129) 107 (54–126) 0.001
CCI (%)
 0 45 (46) 77 (73) 0.001
 1–2 48 (48) 25 (24)  
 ≥ 3 6 (6) 4 (2)  
KPS
 Median (range) 90 (60–100) 90 (80–100) 0.347
Tumor location
 RUL 26 29 0.323
 RML 18 16  
 RLL 21 20  
 LUL 15 26  
 LLL 19 15  
SBRT dose
 50Gy/4fx 19   N/A
 50Gy/5fx 60   
 50Gy/10fx 12   
 60Gy/8fx 5   
 70Gy/10fx 3   
Operation
 lobectomy   90 N/A
 sublobar resection   16  
 VATS   84  
 thoracotomy   22  
  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 fractions, 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