Relative risk (all lung cancer, including clinically diagnosed)
| Relative risk | |||||
|---|---|---|---|---|---|
| Factors | (Total n=22654) | Number | Factors alone | Allowing case mix and district | All factors together |
| *SMR = Standardised mortality ratio for chronic obstructive pulmonary disease and ischaemic heart disease. | |||||
| Case mix | |||||
| Sex | Male | 15229 | 1.00 | 1.00 | 1.00 |
| Female | 7425 | 1.00 (0.97 to 1.03) | 0.97 (0.94 to 1.00) | 0.94 (0.91 to 0.96) | |
| Age (y) | <50 | 800 | 1.00 | 1.00 | 1.00 |
| 50–64 | 5933 | 1.16 (1.08 to 1.26) | 1.15 (1.06 to 1.24) | 1.10 (1.02 to 1.19) | |
| 65–74 | 8995 | 1.43 (1.33 to 1.55) | 1.42 (1.31 to 1.53) | 1.19 (1.10 to 1.28) | |
| 75+ | 6926 | 1.91 (1.76 to 2.06) | 1.75 (1.62 to 1.90) | 1.13 (1.04 to 1.22) | |
| Disease extent | No known nodes/Mets | 13635 | 1.00 | 1.00 | 1.00 |
| Nodal involvement | 869 | 0.63 (0.59 to 0.68) | 0.81 (0.75 to 0.87) | 1.11 (1.03 to 1.20) | |
| Metastases | 8150 | 1.51 (1.47 to 1.56) | 1.66 (1.61 to 1.71) | 1.57 (1.53 to 1.62) | |
| Socioeconomic profile | 1–3 | 3559 | 1.00 | 1.00 | 1.00 |
| 4–7 | 12542 | 1.03 (0.99 to 1.07) | 1.04 (1.00 to 1.08) | 1.05 (1.01 to 1.09) | |
| 8–10 | 6525 | 1.05 (1.01 to 1.10) | 1.09 (1.05 to 1.14) | 1.07 (1.03 to 1.12) | |
| Period | 1986–88 | 7583 | 1.00 | 1.00 | 1.00 |
| 1989–91 | 7586 | 0.94 (0.91 to 0.98) | 0.94 (0.91 to 0.97) | 0.95 (0.92 to 0.98) | |
| 1992–94 | 7485 | 0.92 (0.89 to 0.95) | 0.91 (0.88 to 0.94) | 0.97 (0.94 to 1.00) | |
| Category/type | Small cell | 2448 | 1.00 | 1.00 | 1.00 |
| Non-small cell | 12570 | 0.76 (0.72 to 0.79) | 0.76 (0.73 to 0.80) | 0.79 (0.75 to 0.82) | |
| Clinically diagnosed | 7636 | 1.46 (1.39 to 1.52) | 1.31 (1.24 to 1.37) | 0.90 (0.85 to 0.94) | |
| District factors | |||||
| SMR* | <100 | 1.00 | 1.00 | 1.00 | |
| 100+ | 1.05 (1.02 to 1.08) | 1.07 (1.04 to 1.10) | 1.08 (1.05 to 1.11) | ||
| Histological confirmation rate of district | <62% | 3079 | 1.00 | 1.00 | 1.00 |
| 62–65% | 6850 | 1.03 (0.98 to 1.08) | 1.06 (1.01 to 1.12) | 1.00 (0.95 to 1.05) | |
| 66–70% | 9018 | 0.97 (0.94 to 1.00) | 1.01 (0.97 to 1.05) | 1.11 (1.07 to 1.15) | |
| 71+% | 3707 | 0.91 (0.88 to 0.95) | 0.89 (0.85 to 0.93) | 0.99 (0.95 to 1.04) | |
| Hospital factors | |||||
| Treatment | No definitive treatment | 11473 | 1.00 | 1.00 | 1.00 |
| Active treatment | 11181 | 0.37 (0.36 to 0.38) | 0.41 (0.40 to 0.43) | 0.52 (0.50 to 0.55) | |
| Specialist | Not specialist managed | 5776 | 1.00 | 1.00 | 1.00 |
| Specialist managed (all) | 16884 | 0.37 (0.36 to 0.38) | 0.41 (0.40 to 0.43) | 0.65 (0.63 to 0.68) | |