Table 1.
Patient demographics
| Patient characteristics | Value |
|---|---|
| Age | 70.3 (8.7) |
| Gender, n (%) | 24 (49.0) |
| Female | |
| Race, n (%) | |
| African American | 9 (18.4) |
| Caucasian | 39 (79.6) |
| BMI, kg/m2 | 26.7 (6.1) |
| Smoking status, n (%) | |
| Current smoker | 15 (30.6) |
| Former smoker | 33 (67.3) |
| Pack-years | 50.0 (28.7) |
| CCI, n (%) | |
| 0-2 | 26 (60.5) |
| 3-6 | 17 (39.5) |
| Tumor size, cm | 2.8 (1.4) |
| SUV | 10.4 (7.3) |
| FEV1, % predicted | 59.8 (20.0) |
| DLCO, % predicted | 44.5 (18.3) |
| Tumor location, n (%) | |
| RUL | 12 (26.1) |
| RML | 3 (6.5) |
| RLL | 6 (13.0) |
| LUL | 21 (45.7) |
| LLL | 4 (8.7) |
| Central location, n (%) | 14 (28.6) |
| Cardiac involvement, n (%) | 2 (4.1) |
| Histology, n (%) | |
| Adenocarcinoma | 17 (34.7) |
| Squamous cell carcinoma | 13 (26.5) |
| Small cell carcinoma | 2 (4.1) |
| Non-diagnostic/never-biopsied | 17 (34.7) |
| Clinical stage, n (%) | |
| IA | 37 (75.5) |
| IB | 8 (16.3) |
| IIA | 4 (8.2) |
| KPS | 81.2 (9.3) |
| Radiation dose, n (%) | |
| 30 Gy | 6 (12.2) |
| 34 Gy | 3 (6.1) |
| 48 Gy | 4 (8.2) |
| 50 Gy | 24 (49.0) |
| 60 Gy | 12 (24.5) |
| Fractions, n (%) | |
| 1 | 9 (18.8) |
| 3 | 7 (14.6) |
| 4 | 5 (10.4) |
| 5 | 27 (56.2) |
| Local failure, n (%) | 2 (4.1) |
6MWD = 6-minute walk distance; 6MWT = 6-minute walk test; BDS = Borg dyspnea score; BMI = body-mass index; CCI = Charlson comorbidity index; DBP = diastolic blood pressure; DLCO = diffusion capacity of carbon monoxide; FEV1 = forced expiratory volume within 1 second; HR = heart rate; HRR = heart rate recovery; KPS = Karnofsky performance status; LLL = left lower lobe; LUL = left upper lobe; RLL = right lower lobe; RML = right middle lobe; RUL = right upper lobe; SBP = systolic blood pressure; SUV = standardized uptake value