Table 2.
Unadjusted mortality risk at 90 days and at 90‐ to 180‐days from admission for inpatients with pressure ulcers
| Variables | 90‐day mortality risk Unadjusted hazard ratio | 90‐ to 180‐day mortality risk Unadjusted hazard ratio |
|---|---|---|
| Demographic characteristics | ||
| Age (years) | 1·02 (1·01–1·02), P < 0·001 | 1·01 (1·01–1·02), P < 0·001 |
| Male sex | 1·10 (1·02–1·18), P = 0·016 | 1·27 (1·09–1·49), P = 0·003 |
| Black race* | 0·86 (0·79–0·94), P = 0·001 | 0·92 (0·77–1·10), P = 0·341 |
| Hispanic race* | 1·12 (1·02–1·24), P = 0·024 | 1·60 (1·30–1·97), P < 0·001 |
| Clinical characteristics | ||
| DRG weight | 1·02 (1·01–1·02), P = −0·001 | 1·06 (1·04–1·07), P < 0·001 |
| Systemic infection or fever | 1·66 (1·55–1·79), P < 0·001 | 1·37 (1·16–1·61), P < 0·001 |
| Laboratory values | ||
| Albumin (g/dl) | 0·57 (0·54–0·60), P < 0·001 | 0·69 (0·61–0·78), P < 0·002 |
| White blood cells (k/µl) | 1·01 (1·01–1·01), P < 0·001 | 1·01 (1·00–1·01), P = 0·228 |
| Haematocrit (%) | 0·99 (0·98–0·99), P < 0·001 | 0·98 (0·97–1·00), P = 0·008 |
| Sodium (mEq/l) | 1·01 (1·01–1·01), P < 0·001 | 1·00 (1·00–1·01), P = 0·985 |
| Glucose (mg/dl) | 1·00 (1·00–1·00), P = 0·106 | 1·00 (1·00–1·00), P = 0·543 |
| Estimated glomerular filtration rate on admission (ml/min/1·73 m2) | 1·00 (1·00–1·00), P < 0·001 | 1·00 (1·00–1·00), P = 0·049 |
| Comorbid disease | ||
| Diabetes | 1·32 (1·13–1·54), P = 0·001 | 1·65 (1·16–2·34), P = 0·005 |
| Congestive heart failure | 1·54 (1·43–1·66), P < 0·001 | 1·46 (1·25–1·71), P < 0·001 |
| Chronic renal failure | 1·48 (1·37–1·60), P < 0·001 | 1·39 (1·18–1·65), P < 0·001 |
| Any liver disease | 1·30 (1·17–1·45), P < 0·001 | 0·89 (0·67–1·18), P = 0·408 |
| Human immunodeficiency virus/AIDS | 0·80 (0·64–0·99), P = 0·045 | 0·76 (0·48–1·21), P = 0·250 |
| Dementia | 1·27 (1·05–1·30), P = 0·003 | 0·98 (0·77–1·26), P = 0·892 |
| Cerebrovascular disease | 1·10 (1·00–1·21), P = 0·046 | 1·03 (0·84–1·27), P = 0·780 |
| Hemiplegia/paraplegia | 0·63 (0·52–0·77), P < 0·001 | 0·71 (0·49–1·02), P = 0·065 |
| Myocardial infarction | 1·41 (1·26–1·58), P < 0·001 | 1·22 (0·93–1·59), P = 0·154 |
| Peripheral vascular disease | 0·97 (0·87–1·10), P = 0·658 | 1·11 (0·88–1·40), P = 0·379 |
| Chronic pulmonary disease | 1·12 (1·02–1·22), P = 0·013 | 1·14 (0·94–1·38), P = 0·171 |
| Rheumatic disease | 1·06 (0·83–1·35), P = 0·621 | 1·35 (0·84–2·15), P = 0·214 |
| Peptic ulcer | 1·16 (0·96–1·41), P = 0·125 | 1·57 (1·06–2·33), P = 0·024 |
| Any malignancy | 1·60 (1·45–1·77), P < 0·001 | 1·81 (1·44–2·28), P < 0·001 |
| Metastatic solid tumour | 1·91 (1·68–2·16), P < 0·001 | 1·96 (1·43–2·67), P < 0·001 |
*Hazard ratios for race were compared with patients with ‘White’ or ‘Other’ race.