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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

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X