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Table 2 Subject demographics and baseline characteristics

From: The implementation of a community-based aerobic walking program for mild to moderate knee osteoarthritis (OA): a knowledge translation (KT) randomized controlled trial (RCT): Part I: The Uptake of the Ottawa Panel clinical practice guidelines (CPGs)

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 (%)     
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 (%)     
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 (%)     
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 (%)     
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 (%)     
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
  1. Yrs: years, OA: osteoarthritis, kg: kilograms, m: meters, %: validity percent.