Table 2.
Multivariate linear regression analysis of factors associated with waiting times in days for cardiac surgery for all patients
| Detail | No of patients | Mean (SD) waiting time (days) | Difference in mean waiting time* (95% CI) |
|---|---|---|---|
| Age: | |||
| <55† | 6 906 | 143.7 (126.0) | 0.0 |
| 55-64 | 10 060 | 158.2 (135.0) | 14.6 (10.7 to 18.8) |
| >64 | 7 597 | 150.8 (135.6) | 10.8 (6.4 to 15.1) |
| Sex: | |||
| Male† | 17 251 | 152.6 (133.4) | 0.0 |
| Female | 7 312 | 150.0 (131.4) | 2.8 (−1.0 to 6.7) |
| Operation type: | |||
| CABG† | 18 613 | 157.4 (133.8) | 0.0 |
| CABG+valve(s) | 660 | 135.5 (133.2) | −25.1 (−14.8 to −35.4) |
| Single valve | 4 790 | 134.8 (131.1) | −23.6 (−19.2 to −28.0) |
| Multiple valves | 500 | 130.7 (120.8) | −28.4 (−16.6 to −40.3) |
| Carstairs deprivation category: | |||
| 1† | 1 418 | 139.7 (130.9) | 0.0 |
| 2 | 3 133 | 144.9 (133.2) | 5.9 (−2.4 to 14.2) |
| 3 | 5 040 | 149.4 (135.1) | 10.5 (2.7 to 18.3) |
| 4 | 6 028 | 152.8 (133.3) | 14.2 (6.59 to 21.9) |
| 5 | 3 852 | 150.4 (134.7) | 12.0 (4.0 to 20.1) |
| 6 | 3 100 | 161.8 (129.0) | 23.5 (15.1 to 31.8) |
| 7 | 1 992 | 161.9 (127.1) | 23.5 (14.5 to 32.5) |
*
Compared with reference categories adjusted for the other factors in the model.
†
Reference categories.