ALB and decubitus ulcer: Binomial logistic regression analysis (X2(4) = 15.781, p=0.003) found that admission haemoglobin (<111g L-1), admission albumin (<25g L-1), lack of soft tissue coverage, and patient age at index presentation (>59.5 years) accounted for 79.3% (Nagelkerke R2) of the variance in the failure of pressure ulcers to heal and correctly classified 90.5% of cases (Table S2).