Table 1 Search process

P

‘Palliative’ or ‘end of life’ or ‘terminal’ or ‘death and dying’

813,136

4 443,679

20,030

29,261

478,730

I

‘Arthralgia’ or ‘polyarthralgia’ or ‘pain’

416,896

1,171,198

26,285

133,016

677,575

O

‘Arthritis’ or ‘rheumatoid’ or ‘osteoarthritis’ or ‘musculoskeletal’

123,750

7,413,381

64,124

33,391

199,139

P + I + O

Terms combined with ‘AND’

1383

2192

85

41

236