Patient feature comparison for matched and unmatched patients in the registry dataset (n=32 036)
| LUCADA and registry merged patients from 132 trusts | LUCADA and registry unmerged patients from 132 trusts | |
| Patients | 26 001 | 6035 |
| Sex | ||
| Female | 11 990 (46%) | 2867 (48%) |
| Male | 14 011 (54%) | 3168 (52%) |
| Age years | ||
| <65 | 6032 (23%) | 1287 (21) |
| 65–80 | 14 249 (55%) | 3023 (50) |
| >80 | 5720 (22%) | 1725 (29) |
| Performance status | ||
| 0 | 3816 (15%) | 394 (7%) |
| 1 | 6550 (25%) | 639 (11%) |
| 2 | 4025 (15%) | 342 (6%) |
| 3 | 3553 (14%) | 384 (6%) |
| 4 | 1152 (4%) | 131 (2%) |
| Missing | 6905 (27%) | 4145 (69%) |
| Stage | ||
| IA | 2190 (8%) | 502 (8%) |
| IB | 1836 (7%) | 271 (4%) |
| IIA | 1096 (4%) | 184 (3%) |
| IIB | 1018 (4%) | 131 (2%) |
| IIIA | 3267 (13%) | 385 (6%) |
| IIIB | 2353 (9%) | 230 (4%) |
| IV | 12 699 (49%) | 2443 (41%) |
| Missing | 1542 (6%) | 1889 (31%) |
| Lung cancer type | ||
| Small cell | 2975 (11%) | 382 (6%) |
| Carcinoid | 189 (1%) | 98 (2%) |
| Nonsmall cell | 22 837 (88%) | 5555 (92%) |
| Surgery | ||
| No | 21 825 (84%) | 5252 (87%) |
| Yes | 4176 (16%) | 783 (13%) |
| Chemotherapy | ||
| No | 17 226 (66%) | 5031 (83%) |
| Yes | 8775 (34%) | 1004 (17%) |
| External-beam radiotherapy | ||
| No | 18 262 (70%) | 5198 (86%) |
| Yes | 7739 (30%) | 837 (14%) |
| Brachytherapy | ||
| No | 25 967 (99.9%) | 6026 (99.9%) |
| Yes | 34 (0.1%) | 9 (0.1%) |
LUCADA: Lung Cancer Data.