Features and survival of people according to the database in which records of surgery were present
| N= 60,196 | Record of surgical procedure | ||||
|---|---|---|---|---|---|
| Both | HES only | NLCA only | Neither | ||
| n = 8,535 14% | n = 2,568 4% | n = 795 1% | n = 48,298 80% | ||
| Mean age (years) | 67.4 | 66.8 | 67.8 | 72.6 | |
| Mean % predicted FEV1 | 77.1 | 74.7 | 74.2 | 63.8 | |
| Missing FEV1 (% of total) | 54.6 | 77.8 | 68.7 | 81.8 | |
| Stage (% of non-missing) 1a or 1b | 67.2 | 56.4 | 58.4 | 36.2 | |
| 2a or 2b | 21.9 | 23.0 | 21.7 | 19.6 | |
| 3a | 10.9 | 20.6 | 19.9 | 44.2 | |
| Missing stage (% of total) | 14.5 | 60.6 | 52.0 | 72.9 | |
| Performance status (% of non-missing) 0–1 | 92.3 | 86.2 | 85.5 | 47.9 | |
| 2 | 6.4 | 10.2 | 9.0 | 24.1 | |
| 3–4 | 1.2 | 3.6 | 5.5 | 27.9 | |
| Missing performance status (% of total) | 28.2 | 58.9 | 38.2 | 50.4 | |
| Median survival (months)* | 62 | 41 | 18 | 7 | |
| **Died within 30-days of surgery (%) | 2.6 | 4.4 | 5.8 | N/A | |
| Died within 90-days of surgery (%) | 5.3 | 8.6 | 16.7 | N/A | |
* Survival is calculated from date of diagnosis not date of procedure; FEV1 Forced expiratory Volume in 1 second;
** HES date of procedure unless NLCA only