Table 2.
Associations between LOS and patient, treatment and organisational factors
| Initial surgery | 30 days post-op | |
| LOS Ratio (95% CI) | LOS Ratio (95% CI) | |
| Mastectomy | 1.00 | 1.00 |
| BCS | 0.67 (0.66-0.68) | 0.66 (0.66-0.67) |
| 1997/98 | 1.00 | 1.00 |
| 1998/99 | 0.96 (0.94-0.98) | 0.92 (0.91-0.94) |
| 1999/00 | 0.95 (0.93-0.97) | 0.92 (0.90-0.94) |
| 2000/01 | 0.93 (0.91-0.95) | 0.89 (0.88-0.91) |
| 2001/02 | 0.90 (0.89-0.92) | 0.87 (0.85-0.89) |
| 2002/03 | 0.87 (0.85-0.89) | 0.85 (0.84-0.87) |
| 2003/04 | 0.85 (0.83-0.86) | 0.84 (0.82-0.86) |
| 2004/05 | 0.79 (0.77-0.80) | 0.78 (0.76-0.80) |
| Age (per 10 years) | 1.11 (1.11-1.11) | 1.08 (1.08-1.08) |
| Stage I | 1.00 | 1.00 |
| Stage II | 1.06 (1.05-1.07) | 1.08 (1.07-1.09) |
| Stage III | 1.14 (1.13-1.16) | 1.15 (1.13-1.17) |
| Stage IV | 1.18 (1.14-1.23) | 1.20 (1.15-1.24) |
| Missing | 1.04 (1.02-1.06) | 1.03 (1.01-1.05) |
| Comorbidities - No | 1.00 | 1.00 |
| Comorbidities - Yes | 1.08 (1.07-1.09) | 1.08 (1.07-1.10) |
| Nodes dissected - No | 1.00 | 1.00 |
| Nodes dissected - Yes | 1.08 (1.07-1.10) | 1.13 (1.11-1.14) |
| Reconstructive surg - No | 1.00 | 1.00 |
| Reconstructive surg - Yes | 1.08 (1.06-1.09) | 1.08 (1.06-1.10) |
| Consultant workload - 10-40 | 1.00 | 1.00 |
| Consultant workload - 41-80 | 0.96 (0.89-1.02) | 0.96 (0.89-1.03) |
| Consultant workload - 81+ | 0.99 (0.87-1.13) | 0.99 (0.90-1.09) |
| Variance (95% CI) | Variance (95% CI) | |
| Trust level | 0.08 (0.04-0.13) | 0.06 (0.03-0.10) |
| Surgical team level | 0.05 (0.03-0.06) | 0.04 (0.03-0.06) |