Table 1

Read codes for eligible patients (>50 years old)

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


Williams et al. BMC Family Practice 2009 10:62   doi:10.1186/1471-2296-10-62

Open Data