|
Variable
|
N (%)
|
Mean (SD)
|
|---|
|
Participants
|
4278 (100.0)
| |
|
Age, years
| |
61.1 (9.2)
|
|
45–54
|
1264 (29.5)
| |
|
55–64
|
1393 (32.6)
| |
|
> 65
|
1621 (37.9)
| |
|
Gender
|
|
Male
|
1782 (41.7)
| |
|
Female
|
2496 (58.3)
| |
|
Race
|
|
White or Caucasian
|
3458 (80.8)
| |
|
Other
|
820 (19.2)
| |
|
Educationa
|
|
Tertiary
|
1336 (31.2)
| |
|
Secondary
|
1277 (29.9)
| |
|
None / Primary
|
1665 (38.9)
| |
|
Living status (number of persons)
| |
1.3 (1.1)
|
|
Live alone
|
928 (21.7)
| |
|
Living with someone else
|
3350 (78.3)
| |
|
BMI, kg/m2
| |
28.5 (4.8)
|
|
< 25
|
1040 (24.3)
| |
|
25 to < 30
|
1690 (39.5)
| |
|
30 to < 35
|
1122 (26.2)
| |
|
≥35
|
426 (10.0)
| |
|
Comorbidities
| |
0.4 (0.8)
|
|
score 0
|
3254 (76.1)
| |
|
score > 0
|
1024 (23.9)
| |
|
Physical activity, PASEb
| |
162.1 (81.8)
|
|
238–580
|
798 (18.7)
| |
|
176–237
|
853 (19.9)
| |
|
135–175
|
866 (20.2)
| |
|
91–134
|
871 (20.4)
| |
|
0–90
|
890 (20.8)
| |
|
Smoking status
|
|
Never
|
1977 (46.2)
| |
|
Former
|
1908 (44.6)
| |
|
Current
|
393 (9.2)
| |
|
Knee injuries
|
|
No
|
2424 (56.7)
| |
|
Yes
|
1854 (43.3)
| |
|
Knee surgical history
|
|
No
|
3341 (78.1)
| |
|
Yes
|
937 (21.9)
| |
|
Disutility (SF-6D) score
| |
−0.199 (0.120)
|
- Abbreviations: BMI body mass index; Comorbidites Charlson comorbidity index score, PASE physical activity scale for the elderly, SD standard deviation
- aThe highest grade of school completed: tertiary (graduate degree), secondary (college graduate or some graduate school), and primary/none level (less than college)
- bPhysical activity PASE score quintiles (higher scores indicate greater physical activity)
