Total

With knee pain

Without knee pain

Variables

N = 5311

N = 1848

N = 3463

Age

Old-old

2481 (46.7)

1070 (57.9)

1411 (40.8)

Young-old

2830 (53.3)

779 (42.1)

2051 (59.2)

Sex

Men

2415 (45.5)

699 (37.8)

1716 (49.5)

Women

2830 (53.3)

1149 (62.2)

1747 (50.5)

BMI

≥25.0

1178 (22.3)

528 (28.7)

650 (18.8)

18.5-24.0

3779 (71.4)

1223 (66.4)

2556 (74.0)

≺18.5

338 (6.4)

90 (4.9)

248 (7.2)

Physical activity

Insufficient

2583 (48.6)

1006 (54.4)

1578 (45.6)

Sufficient

2728 (51.4)

842 (45.6)

1855 (54.4)

Sitting time

Long-time

2723 (51.3)

987 (53.4)

1736 (50.1)

Short-time

2588 (48.7)

861 (46.6)

1727 (49.9)

Smoking status

Smoker

570 (10.7)

149 (8.1)

421 (12.2)

Nonsmoker

4741 (89.3)

1699 (91.9)

3041 (87.8)

Drinking status

Drinker

1780 (33.5)

517 (28.0)

1264 (36.5)

Nondrinker

3531 (66.5)

1332 (72.0)

2199 (63.5)

Nutritional status

Poor

854 (16.1)

381 (20.6)

474 (13.7)

Good

4457 (83.9)

1468 (79.4)

2989 (86.3)

Marital status

Without spouse

1588 (29.9)

640 (34.6)

948 (27.4)

With spouse

3723 (70.1)

1208 (65.4)

2515 (72.6)

Educational level

Low

4579 (86.2)

1649 (89.2)

2930 (84.6)

High

732 (13.8)

199 (10.8)

533 (15.4)

Medical treatment history

Yes

3493 (65.8)

1356 (20.6)

2136 (13.7)

No

1818 (34.2)

492 (79.4)

1326 (86.3)