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Table 1 Read codes for eligible patients (>50 years old)

From: Activity Increase Despite Arthritis (AÏDA): design of a Phase II randomised controlled trial evaluating an active management booklet for hip and knee osteoarthritis [ISRCTN24554946]

Included Read codes
N05 (and below) osteoarthritis
14G2 H/O osteoarthritis
N06z5 hip arthritis
N06z6 knee arthritis
N094K arthralgia of hip
N094M arthralgia of knee
1M10 knee pain
Excluded Read codes
M160 psoriatic arthropathy
N04 (and below) inflammatory polyarthropathy
7K2 (and below) hip joint operations
7K3 (and below) knee joint operations