Table 1

Baseline characteristics of participants, by intervention group, reported as mean (SD) unless otherwise stated

Existing service
(n=88)
Exercise advice and support
(n=87)
Age (years)62.5 (8.1)62.4 (9.1)
Female, n (%)55 (63)55 (63)
Height (m)1.70 (0.1)1.69 (0.1)
Body mass (kg)90.2 (22.8)88.3 (19.2)
Body mass index (kg/m2)31.2 (7.6)31.1 (6.8)
Australian state/territory of residence, n (%)
 Victoria16 (18)15 (17)
 New South Wales13 (15)20 (23)
 Queensland21 (24)16 (18)
 Western Australia11 (13)11 (13)
 South Australia12 (13)9 (10)
 Tasmania9 (10)7 (8)
 Australian Capital Territory4 (5)4 (5)
 Northern Territory2 (2)5 (6)
Geographical location, n (%)*
 Major cities51 (58)48 (55)
 Inner regional21 (24)22 (25)
 Outer regional12 (14)11 (13)
 Remote3 (3)6 (7)
 Very remote1 (1)0 (0)
Currently employed, n (%)49 (56)37 (43)
Problems in other joints, n (%)
 Hand36 (41)34 (39)
 Neck35 (40)21 (24)
 Back52 (59)34 (39)
 Hip34 (39)25 (29)
 Foot36 (41)35 (40)
 Shoulder38 (43)21 (24)
Treatment expectations, n (%)
 No effect2 (2)0 (0)
 Minimal improvement10 (11)8 (9)
 Moderate improvement42 (48)46 (53)
 Large improvement34 (39)32 (37)
 Complete recovery0 (0)1 (1)
Symptom duration (years)9 (8)10 (9)
Consulted doctor for knee pain, n (%)†85 (97)87 (100)
Current medication use, n (%)‡
 Analgesia (paracetamol combinations)54 (61)47 (54)
 Analgesia (opioids)3 (3)2 (2)
 Non-steroidal anti-inflammatories28 (32)26 (30)
 COX-2 inhibitors5 (6)7 (8)
 Topical anti-inflammatories19 (22)22 (25)
  • *Based on residential postcode, in accordance with Australian Statistical Geography Standard.

  • †At any time.

  • ‡Defined as at least once per week over the prior month.

  • COX-2, cyclooxygenase-2.