| Variables |
n |
Kellgren-Lawrence score |
Univariate |
Multivariate model 3b |
Multivariate model 4c |
| Grade 2, 3, 4 |
Grade 1 |
Grade 0 |
| (N=6) |
(N=132) |
(N=296) |
OR (95 CI)a |
OR (95% CI) |
OR(95%CI) |
| Dieary habits |
|
|
|
|
| Meat consumption at 40 years of age |
|
|
| none |
59 |
12 (20%) |
19 (32) |
28 (47) |
1 |
1 |
1 |
| a few times a week |
351 |
51 (15%) |
94 (27) |
206 (59) |
0.64 (0.38-1.08) |
0.75 (0.43-1.30) |
0.84 (0.48-1.46) |
| every day |
82 |
2 (2%) |
19 (23) |
61 (74) |
0.29 (0.15-0.58) |
0.57 (0.27-1.21) |
0.70 (0.32-1.52) |
| p for trend |
|
|
|
|
0.0004 |
0.139 |
0.361 |
| Small fish with bones consumption at 40 years of age |
|
|
| none |
102 |
12 (12%) |
25 (25) |
65 (64) |
1 |
1 |
1 |
| a few times a week |
289 |
41 (14%) |
69 (24) |
179 (62) |
1.11 (0.70-1.75) |
1.10 (0.67-1.80) |
1.08 (0.65-1.80) |
| every day |
93 |
11 (12%) |
37 (40) |
45 (48) |
1.64 (0.94-2.84) |
1.23 (0.68-2.21) |
1.18 (0.64-2.16) |
| p for trend |
|
|
|
|
0.079 |
0.499 |
0.592 |
| Coffee consumption at 40 years of age |
|
|
| none |
256 |
49 (19%) |
85 (33) |
122 (48) |
1 |
1 |
1 |
| a few times a week |
103 |
11 (11%) |
24 (23) |
68 (66) |
0.47 (0.30-0.75) |
0.73 (0.45-1.20) |
0.75 (0.45-1.25) |
| every day |
134 |
5 (4%) |
23 (17) |
106 (79) |
0.23 (0.15-0.38) |
0.44 (0.26-0.75) |
0.48 (0.28-0.83) |
| p for trend |
|
|
|
|
<0.0001 |
0.002 |
0.008 |
| Milk consumption at school |
|
|
| none |
372 |
53 (14%) |
106 (28) |
213 (57) |
1 |
1 |
1 |
| a few times a week |
45 |
5 (11%) |
9 (20) |
31 (69) |
0.62 (0.33-1.19) |
0.77 (0.38-1.57) |
0.86 (0.42-1.79) |
| every day |
74 |
7 (9%) |
17 (23) |
50 (68) |
0.64 (0.38-1.08) |
1.10 (0.61-1.97) |
1.13 (0.61-2.08) |
| p for trend |
|
|
|
|
0.052 |
0.931 |
0.804 |
| Recent milk consumption |
|
| none |
81 |
8 (10%) |
16 (20) |
57 (70) |
1 |
1 |
1 |
| a few times a week |
106 |
14 (13%) |
25 (24) |
67 (63) |
1.39 (0.76-2.56) |
1.70 (0.88-3.28) |
1.82 (0.92-3.60) |
| every day |
306 |
43 (14%) |
91 (30) |
172 (56) |
1.79 (1.07-3.01) |
1.37 (0.78-2.41) |
1.38 (0.76-2.49) |
| p for trend |
|
|
|
|
0.021 |
0.509 |
0.586 |
a OR = odds ratio, 95% CI = 95% confidence interval
b Adjusted by age.
c Adjusted by sex, age, height, weight at 40 years of age, history of treatment for knee injury, occupation, and often good posture while sitting before age 40. |
