Table 1

Patient and disease characteristics at baseline from the total group and the follow-up data from the reliability and the responsiveness sample*
N Baseline sample Reliability sample (≤3 weeks) Responsiveness sample (≥3 months)
401 106 112
Age, mean (SD) 58 (13) 61 (11) 58 (11)
Female, ♀% 231 (58%) 65 (63%) 59 (54%)
Index joint, knee 284 (71%) 81 (76%) 81 (72%)
BMI, median (IQR) 26 (24-29) 26 (24-30) 27 (24-30)
Education, higher 77 (20%) 25 (25%) 27 (25%)
Duration complaints, >5 years 144 (61%) 72 (63%) 59 (58%)
Co-morbidities, yes 192 (52%) 52 (50%) 63 (72%)
Baseline data Follow-up data
Hip group Knee Group Hip group Knee Group Hip group Knee Group
N 117 284 25 81 31 81
LEFS 36.0 (16.6) 39.6 (14.1) 29.8 (13.5) 36.4 (13.7) 34.3 (17.0) 37.5 (15.0)
HOOS/KOOS
Pain, mean (SD) 44.6 (21.3) 49.9 (20.0) 41.7 (21.1) 46.5 (19.7) 43.6 (23.7) 53.8 (19.3)
Symptoms, mean (SD) 41.6 (21.4) 54.6 (19.3) 40.2 (20.3) 52.5 (20.5) 39.7 (23.5) 55.8 (19.6)
Function, daily living, mean (SD) 47.5 (21.9) 56.5 (21.7) 43.8 (21.0) 54.2 (20.3) 46.5 (24.0) 57.8 (21.4)
Function, sports and recreation, median (IQR) 25 (6-38) 10 (0-30) 13 (6-25) 5 (0-25) 19 (6-31) 10 (0-25)
Quality of life, median (IQR) 25 (13-38) 25 (13-44) 31 (19-38) 25 (13-38) 25 (13-38) 31 (19-44)
SF36
Pain, mean (SD) 35.6 (8.9) 37.3 (8.2) 35.6 (6.5) 38.6 (7.3) 37.0 (8.0) 39.9 (8.3)
Functioning, mean (SD) 31.8 (9.8) 32.8 (9.2) 29.8 (8.5) 32.5 (8.2) 31.0 (10.0) 33.4 (9.5)
HADS (total), median (IQR) 9 (5-16) 9 (4-15) N/A N/A N/A N/A
CIS, mean (SD) 34.8 (12.6) 31.0 (13.6) N/A N/A N/A N/A

* Figures are numbers and percentages in the brackets unless indicated differently. Cut-off arbitrarily chosen. Abbreviations: BMI = Body Mass Index, IQR = Inter Quartile Range, SD = Standard Deviation.

Hoogeboom et al.

Hoogeboom et al. BMC Musculoskeletal Disorders 2012 13:117   doi:10.1186/1471-2474-13-117

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