Table 1

Descriptive data of the sample at baseline (n = 105).

Baseline descriptorHydro (n = 35)Gym (n = 35)Control (n = 35)Total group (n = 105)
Figures indicate number (%) of participants unless otherwise indicated.
*Data presented as medians and interquartile ranges; †hydrotherapy group significantly different from gym group at baseline (p = 0.015).
Sex
    Male20151553 (50.5%)
    Female15172052 (49.5%)
Age (years)
    mean (sd)73.0 (8.2)69.8 (9.2)69.8 (9.0)70.9 (8.8)
    Range55–8851–8850–8550–88
Recruited from:
    Orthopaedic surgery waiting list16121846 (44%)
    Community10111031 (30%)
    Rheumatology database66416 (15%)
    Physiotherapy referral36312 (11%)
Joints affected by OA
    Hip joints (n)16171851 (24%)
    Knee joints (n)434637126 (60%)
Comorbid conditions
    Heart condition9121334 (32%)
    Respiratory condition17131141 (39%)
    Other333334100 (95%)
Pain*
    WOMAC pain score (0–20)10.0 (3.0)†8.0 (4.0)10.0 (4.0)9.0 (4.0)
    Arthritis Self-Efficacy Score (10–100)50.0 (24.0)50.0 (32.0)50.0 (22.0)50.0 (28.0)
Function*
    Walking speed (m/s)0.99 (0.49)0.97 (0.39)1.11 (0.46)1.02 (0.40)
    Distance walked (m)257.3 (282.8)336.2 (240.1)388.1 (320.9)336.0 (296.0)
Strength (kg)*
    Left quadriceps22.7 (21.7)22.8 (16.4)19.7 (14.0)20.8 (16.7)
    Right quadriceps22.5 (24.9)19.7 (9.9)22.4 (17.3)20.8 (18.3)