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Table 1 The fields of validation used in the study to validate the NJR revision data

From: Validation of revision data for total hip and knee replacements undertaken at a high volume orthopaedic centre against data held on the National Joint Registry

Field name Variable type Comment
Local patient ID Continuous  
Gender Dichotomous Male or female
Date of birth Continuous  
Revised by selected surgeon Dichotomous Yes or no
Side Dichotomous Left or right
Date of revision Continuous  
Date of primary Continuous  
Time from primary Continuous  
Primary type Categorical Primary cemented, primary uncemented, primary hybrid, primary resurfacing
Reason (indication) for revision NJR Categorical