Table 2.
Summary statistics for PLOS data by IMD quintile group and operation type
| Number | Mean | SD | Median | (LQ, UQ) | |
|---|---|---|---|---|---|
| All cardiac surgery | |||||
| Q1 | 47 042 | 9.4 | 9.7 | 7 | (5, 10) |
| Q2 | 47 192 | 9.4 | 9.4 | 7 | (5, 10) |
| Q3 | 47 105 | 9.6 | 10.1 | 7 | (5, 10) |
| Q4 | 46 792 | 9.8 | 10.9 | 7 | (5, 10) |
| Q5 | 47 065 | 10.1 | 11.1 | 7 | (6, 10) |
| CABG alone | |||||
| Q1 | 28 993 | 8.2 | 8.4 | 6 | (5, 8) |
| Q2 | 29 867 | 8.2 | 7.8 | 6 | (5, 8) |
| Q3 | 30 199 | 8.5 | 8.7 | 6 | (5, 8) |
| Q4 | 31 358 | 8.7 | 9.4 | 6 | (5, 9) |
| Q5 | 32 467 | 9.0 | 9.7 | 7 | (5, 9) |
| Valve+CABG | |||||
| Q1 | 7041 | 12.6 | 12.2 | 9 | (7, 14) |
| Q2 | 6788 | 12.5 | 12.6 | 9 | (7, 14) |
| Q3 | 6683 | 12.9 | 13.1 | 9 | (7, 14) |
| Q4 | 6163 | 13.5 | 15.4 | 9 | (7, 14) |
| Q5 | 5546 | 14.0 | 15.1 | 9 | (7, 15) |
| Valve alone | |||||
| Q1 | 11 008 | 10.6 | 10.6 | 8 | (6, 11) |
| Q2 | 10 537 | 10.5 | 10.3 | 8 | (6, 11) |
| Q3 | 10 223 | 10.8 | 11.2 | 8 | (6, 12) |
| Q4 | 9271 | 11.0 | 11.1 | 8 | (6, 12) |
| Q5 | 9052 | 11.7 | 12.0 | 8 | (6, 12) |
CABG, coronary artery bypass graft; IMD, index of multiple deprivation; LQ, first quartile; PLOS, postoperative length of stay; UQ, third quartile.