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Table 2 Point Estimates and Standard Errors Using the Summary-Level Modified Poisson Method and Pooled Individual-Level Data Analysis: Analysis of Real-World Data

From: Privacy-protecting estimation of adjusted risk ratios using modified Poisson regression in multi-center studies

CovariatesSummary-Level Modified Poisson MethodPooled Individual-Level Data Analysis
Parameter EstimatesStandard ErrorsParameter EstimatesStandard Errors
Intercept−1.56531470.1040146−1.56531470.1040146
Exposurea−0.46322190.0422368−0.46322190.0422368
Demographics
 Age (years)0.00292530.00186940.00292530.0018694
 Female sex0.08603550.04786380.08603550.0478638
Combined comorbidity score0.05434120.01251690.05434120.0125169
Diagnosis of
 Asthma−0.02121090.0538624−0.02121090.0538624
 Atrial fibrillation0.08358200.12493590.08358200.1249359
 Atrial flutter0.16382680.25987210.16382680.2598721
 Coronary artery disease0.15971570.07467210.15971570.0746721
 Deep vein thrombosis0.17383650.13718370.17383650.1371837
 Gastroesophageal reflux disease−0.05869710.0393428−0.05869710.0393428
 Hypertension0.00468850.04480180.00468850.0448018
 Ischemic stroke−0.15925960.1986055−0.15925960.1986055
 Myocardial infarction0.20694230.15099180.20694230.1509918
 Pulmonary embolism0.28466480.14364040.28466480.1436404
 Sleep apnea−0.02615500.0396516−0.02615500.0396516
Use of
 Anticoagulants0.10649050.12052520.10649050.1205252
 Assistive walking device0.09089090.13942270.09089090.1394227
 Home oxygen0.07326200.11622950.07326200.1162295
Number of drug dispensing
 Unique drug classes−0.05794580.0166577−0.05794580.0166577
 Unique generic medications0.06737830.01364060.06737830.0136406
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