Table 3.
Agreement between the Regular HSMR and the Variants Regarding the Funnel Plot Bands Using 99.8% Control Limits
| Method | Number (%) of Trusts Flagged as High | Number (%) of Trusts Flagged as Low | Number (%) of Trusts in Different Band Compared with Regular HSMR Band | Number (%) of Trusts Flagged as Average with Regular but High with Variant | Number (%) of Trusts Flagged as High with Regular but Average with Variant |
|---|---|---|---|---|---|
| Regular | 31 (21%) | 24 (16%) | N/A | N/A | N/A |
| First admission per patient | 12 (8%) | 16 (11%) | 31 (21) | 1 (1%) | 20 (14%) |
| Last admission per patient | 19 (13%) | 35 (24%) | 29 (20) | 0 | 12 (8%) |
| No Charlson adjustment | 28 (19%) | 28 (19%) | 19 (13) | 5 (3%) | 8 (5%) |
| No palliative care adjustment | 26 (18%) | 29 (20%) | 22 (15) | 4 (3%) | 9 (6%) |
| Unplanned admissions of zero days' stay ending in live discharge excluded | 29 (20%) | 27 (18%) | 7 (5) | 1 (1%) | 3 (2%) |
| The above three changes combined | 22 (15%) | 25 (17%) | 29 (20) | 5 (3%) | 15 (10%) |
| 30-day total mortality | 31 (21%) | 27 (18%) | 39 (27) | 12 (8%) | 12 (8%) |
| Using 100% of admissions | 30 (20%) | 26 (18%) | 13 (9) | 4 (3%) | 5 (3%) |
| Using just five diagnosis groups | 13 (9%) | 8 (5%) | 40 (27) | 2 (1%) | 20 (14%) |
HSMR, hospital standardized mortality ratio.