Covariate balance-related propensity score weighting in estimating overall hazard ratio with distributed survival data

Table 7 Estimation of overall hazard ratio and the corresponding 95% confidence intervals using different propensity score estimation methods in distributed data and pooled individual-level data

Distributed Data Analysis
Method	Hazard ratio	95% Confidence intervals
Global weight	0.737	0.653 to 0.832
Local weight	0.709	0.619 to 0.812
Proposed weight	0.679	0.585 to 0.789
Pooled Individual-Level Data Analysis
Method	Hazard ratio	95% Confidence intervals
Global weight	0.735	0.651 to 0.831
Local weight	0.708	0.618 to 0.811
Proposed weight	0.669	0.575 to 0.777

ISSN: 1471-2288