Key patient features across the registry dataset and LUCADA (Lung Cancer Data) for the 132 National Health Service trusts and level of agreement (n=26 001)
| Key variables | Registry database | LUCADA database | Agreement | κ |
| Sex | ||||
| Female | 11 990 (46%) | 11 987 (46%) | ||
| Male | 14 011 (54%) | 14 014 (54%) | 99% | 0.99 |
| Age years | ||||
| <65 | 6032 (23%) | 6025 (23%) | ||
| 65–80 | 14 249 (55%) | 14 242 (55%) | ||
| >80 | 5720 (22%) | 5734 (22%) | 99% | 0.99 |
| Pathology confirmed | ||||
| No | 6341 (24%) | 7664 (29) | ||
| Yes | 19 660 (76%) | 18 337 (71%) | 89% | 0.73 |
| Lung cancer type | ||||
| Small cell | 2975 (11%) | 2958 (11%) | ||
| Carcinoid | 189 (1%) | 234 (1%) | ||
| Nonsmall cell | 22 837 (88%) | 22 809 (88%) | 97% | 0.87 |
| Performance status | ||||
| 0 | 3816 (15%) | 4278 (16%) | ||
| 1 | 6550 (25%) | 7869 (30%) | ||
| 2 | 4025 (15%) | 5109 (20%) | ||
| 3 | 3553 (14%) | 4527 (17%) | ||
| 4 | 1152 (4%) | 1424 (5%) | 97% | 0.91#,¶ |
| Missing | 6905 (27%) | 2794 (11%) | 83% | 0.57# |
| Stage | ||||
| IA | 2976 (8%) | 2226 (9%) | ||
| IB | 2296 (6%) | 1714 (7%) | ||
| IIA | 1405 (4%) | 1087 (4%) | ||
| IIB | 1236 (4%) | 1025 (4%) | ||
| IIIA | 3981 (11%) | 3330 (13%) | ||
| IIIB | 2844 (8%) | 2470 (9%) | ||
| IV | 16 758 (47%) | 12 258 (47%) | 96% | 0.90#,¶ |
| Missing | 4022 (11%) | 1891 (7%) | 94% | 0.81# |
#: weighted κ; ¶: excluding missing data.