Key: NSAIDs: nonsteroidal anti-inflammatory drugs, Cox-2: cyclo-oxygenase 2 inhibitors, DMARDs: disease modifying antirheumatic drugs.
*General analgesics excluded, for example, paracetamol, nefopam, codeine, morphine.
**Some patients were taking more than one medication in a group.
***Aspirin was used for cardiovascular risk reduction (75–300 mg) rather than analgesia/anti-inflammatory.