Table 5 Propensity score parameter list
From: Elevated albumin: a protective factor against mortality in geriatric hip fracture patients
The variables used in calculating the propensity score | Age; sex; injury mechanism; fracture classification; aCCI; CHD; arrhythmia; ischemic stroke; cancer; dementia; COPD; hepatitis; time to operation; operation; operation time; infusion; transfusion |
|---|---|
Propensity score algorithm | Cox regression model |
C-statistical | 0.6597 |
Matching method | Greedy matching within specified caliper distances |
Metric Distances | 0.05 |
Matching ratio | 1:1 |
Use of replacement | With replacement |
Matching sample size | No. of mortality = 1: 690 cases No. of mortality = 0: 690 cases Total 1380 cases |