Table 1.
Baseline patient characteristics of this large cancer centre's cohort
| Covariate | Number of patients (% proportion of patients with data present) |
|---|---|
| Gender | |
| Male | 510 (55%) |
| Female | 415 (45%) |
| Age | |
| Range | 36–93 |
| Interquartile range | 14 |
| Mean | 69 |
| ECOG performance status | |
| 0 | 65 (7%) |
| 1 | 315 (34%) |
| 2 | 325 (35%) |
| 3 | 213 (23%) |
| 4 | 7 (1%) |
| Good (0+1) | 380 (41%) |
| Mid (2) | 325 (35%) |
| Poor (3+4) | 220 (24%) |
| Histology | |
| Small cell lung cancer | 261 (28%) |
| Non-small cell lung cancer | 664 (72%) |
| Non-small cell lung cancer subgroups | |
| Adenocarcinoma | 323 (35%) |
| Adenosquamous cell carcinoma | 7 (1%) |
| Large cell carcinoma | 14 (1%) |
| Squamous cell carcinoma | 320 (35%) |
| Comorbidities | |
| 0 | 221 (28%) |
| 1 | 257 (33%) |
| 2 | 202 (26%) |
| 3 | 96 (12%) |
| N/A | 149 |
| TNM stage | |
| 2a | 9 (1%) |
| 2b | 11 (2%) |
| 3a | 61 (8%) |
| 3b | 95 (13%) |
| 4 | 545 (76%) |
| N/A | 204 |
| Tumour location | |
| Lung, upper lobe | 533 (65%) |
| Lung, middle lobe | 60 (7%) |
| Lung, lower lobe | 230 (28%) |
| Lung, not otherwise specified (N/A) | 102 |
| Tumour side | |
| Left | 301 (40%) |
| Right | 462 (60%) |
| N/A | 162 |
| Smoking | |
| Lifelong never | 27 (3%) |
| Light former | 7 (1%) |
| Ex-smoker | 457 (60%) |
| Current smoker | 272 (36%) |
| N/A | 159 |
| Pack years | |
| Range | 0–150 |
| Interquartile range | 20 |
| Mean | 42 |
| N/A | 234 |
| Fractionation scheme | |
| 8 Gy/1 fraction | 10 (1%) |
| 10 Gy/1 fraction | 97 (10%) |
| 20 Gy/5 fractions | 267 (29%) |
| 30 Gy/10 fractions | 551 (60%) |
| 8 Gy + 10 Gy/1 fraction | 107 (12%) |
| Primary radiotherapy technique | |
| Intensity-modulated radiotherapy | 2 (0%) |
| Parallel pair and two field | 890 (96%) |
| Single field | 28 (3%) |
| Three+ field | 5 (1%) |