Table 2 Subject demographics and baseline characteristics
Characteristic | Walking (n=79) | Walking and Behavioural (n=69) | Self-directed Control (n=74) | Total |
|---|---|---|---|---|
Mean age (SD), yrs | 63.9 (10.3) | 63.9 (8.2) | 62.3(6.8) | 63.4 (8.6) |
Missing Data | 0 | 0 | 0 | 0 |
Men/women, (%) | 24 (30.4)/55 (69.9) | 18 (26.1)/51 (73.9) | 27 (36.5)/47 (63.5) | 69 (31.1)/153 (68.9) |
Missing Data | 0 | 0 | 0 | 0 |
Affected knee, n (%) | Â | Â | Â | Â |
Right | 33 (41.8) | 31 (44.9) | 25 (33.8) | 89 (40.1) |
Left | 31(39.2) | 23 (33.3) | 28 (37.8) | 82 (36.9) |
Both side | 15 (19.0) | 15 (28.4) | 21 (28.4) | 51 (23.0) |
Missing Data | 0 | 0 | 0 | 0 |
Mean duration of OA (SD), yrs | 9.54 (8.09) | 11.3 (9.7) | 10.0 (9.9) | 10.3 (9.26) |
Missing Data | 0 | 0 | 0 | 0 |
Mean weight (SD), kg | 80.7 (18.5) | 83.1 (15.4) | 83.0(15.8) | 82.2 (16.6) |
Missing Data | 0 | 1 | 0 | 0 |
Mean BMI (SD), kg/m² | 29.4 (5.4) | 30.3 (5.6) | 29.9(5.3) | 29.8 (5.4) |
Missing Data | 0 | 2 | 4 | 6 |
Walking aid, n (%) | Â | Â | Â | Â |
Yes | 10 (12.7) | 10 (14.5) | 9 (12.2) | 29 (13.1) |
No | 69 (87.3) | 58 (84.1) | 64 (86.5) | 191 (86.0) |
Missing Data | 0 | 1 | 1 | 2 |
Racial background, n (%) | Â | Â | Â | Â |
White | 69 (87.3) | 60 (87.0) | 68 (91.9) | 197 (88.7) |
Black | 1 (1.3) | 3 (4.3) | 1 (1.4) | 5 (2.3) |
Hispanic | 2 (2.5) | 2 (2.9) | 4 (5.4) | 8 (3.6) |
Asian or Pacific Islander | 5 (6.3) | 4 (5.8) | 1 (1.4) | 10 (4.5) |
American Indian or Alaskan native | 1 (1.3) | 0 (0) | 0 (0) | 1 (0.5) |
Other | 1 (1.3) | 0 (0) | 0 (0) | 1 (0.5) |
Missing Data | 0 | 0 | 0 | 0 |
Marital status, n (%) | Â | Â | Â | Â |
Married | 46 (58.2) | 36 (52.2) | 44 (59.5) | 126 (56.8) |
Separated | 2 (2.5) | 1 (1.4) | 1 (1.4) | 4 (1.8) |
Divorced | 9 (11.4) | 17 (24.6) | 8 (10.8) | 34 (15.3) |
Widowed | 17 (21.5) | 11 (15.9) | 9 (12.2) | 37 (16.7) |
Never Married | 5 (6.3) | 4 (5.8) | 12 (16.2) | 21 (9.5) |
Missing Data | 0 | 0 | 0 | 0 |
Level of education, n (%) | Â | Â | Â | Â |
Less than 7 yrs of school | 2 (2.5) | 1 (1.4) | 1 (1.4) | 4 (1.8) |
Grades 7 through 9 | 5 (6.3) | 0 (0) | 0 (0) | 5 (2.3) |
Grades 10 through 11 | 7 (8.9) | 4 (5.8) | 5 (6.8) | 16 (7.2) |
High school graduate | 13 (16.5) | 16 (23.2) | 8 (10.8) | 37 (16.7) |
1 to 4 yrs of college | 13 (16.5) | 9 (13.0) | 22 (29.7) | 44 (19.8) |
College graduate | 25 (31.6) | 21 (30.4) | 19 (25.7) | 65 (29.3) |
Professional or Graduate school | 14 (17.7) | 18 (26.1) | 19 (25.7) | 51 (23.0) |
Missing Data | 0 | 0 | 0 | 0 |