Week-One Anaemia was Associated with Increased One-Year Mortality in Critically Ill Surgical Patients

Table 3

Cox proportional hazard regressions for estimation of the association between level of week-1 haemoglobin lower than 10 g/dL and one-year mortality in critically ill patients.

	PSM	IPTW	CBPS
	HR (95%CI)	HR (95%CI)	HR (95%CI)
Model 1	1.264 (1.115–1.434)	1.208 (1.042–1.400)	1.307 (1.140–1.498)
Model 2	1.249 (1.101–1.417)	1.184 (1.029–1.362)	1.246 (1.092–1.421)
Model 3	1.170 (1.030–1.329)	1.175 (1.026–1.347)	1.186 (1.037–1.356)
Model 4	1.164 (1.025–1.322)	1.179 (1.030–1.348)	1.181 (1.034–1.349)

Model 1. Unadjusted. Model 2. Adjusted for demographic data and comorbidities listed in Table 1. Model 3. Adjusted for variables in model 2 and critical illness severity as well as managements listed in Table 1. Model 4. Adjusted for variables in model 3 and laboratory data listed in Table 1. PSM, propensity score matching; IPTW, inverse probability of treatment weighting; CBPS, covariate balancing propensity score; HR, hazard ratio; CI, confidence interval.