Table 2.

Summary of Results of Primary Outcome and Sensitivity Analysis

	Original Cohort		Matched Cohort		Weighted Cohort
	HR (95% CI)	P value	HR (95% CI)	P value	HR (95% CI)	P value
Unadjusted	1.40(1.12–1.74)	0.003	1.31(1.08–1.68)	0.016	1.20(1.06–1.51)	0.024
Model 1	1.37(1.10–1.71)	0.006	1.30(1.06–1.64)	0.018	1.20(1.05–1.52)	0.032
Model 2	1.33(1.06–1.68)	0.015	1.26(1.02–1.63)	0.037	1.22(1.04–1.55)	0.038
Model 3	1.38(1.06–1.79)	0.018	1.38(1.03–1.84)	0.030	1.31(1.01–1.72)	0.045

Notes: Model 1 adjusted for age, gender, weight, ethnicity. Model 2 adjusted for model 1 plus comorbidities. Model 3 adjusted for model 2 plus score system, interventions, vital signs and laboratory results. It would be better if significant p values were expressed in bold characters.