Table 2 Associations between oral status and chewing difficulty in Thai older adults (n = 4,130)

Number of teeth

20

 < 20

2,228 (53.9)

53.6

 ≥ 20

1,902 (46.1)

51.7

21

 < 21

2,355 (57.0)

53.8

 ≥ 21

1,775 (43.0)

51.4^¶

22

 < 22

2,482 (60.1)

53.6

 ≥ 22

1,648 (39.9)

51.5^¶

23

 < 23

2,635 (63.8)

53.7

 ≥ 23

1,495 (36.2)

51.0^¶

24

 < 24

2,818 (68.2)

53.4

 ≥ 24

1,312 (31.8)

51.3

25

 < 25

3,008 (72.8)

53.4

 ≥ 25

1,122 (27.2)

51.1^¶

26

 < 26

3,205 (77.6)

53.6

 ≥ 26

925 (22.4)

49.7^*

27

 < 27

3,383 (81.9)

53.6

 ≥ 27

747 (18.1)

49.0^*

28

 < 28

3,559 (86.2)

53.6

 ≥ 28

571 (13.8)

47.3^**

Occlusal Pairs

4

 < 4

2,517 (60.9)

53.0

 ≥ 4

1,613 (39.1)

52.3

5

 < 5

2,843 (68.8)

53.3

 ≥ 5

1,287 (31.2)

51.4

6

 < 6

3,141 (76.1)

53.3

 ≥ 6

989 (23.9)

51.0

7

 < 7

3,470 (84.0)

53.3

 ≥ 7

660 (16.0)

49.5^¶

8

 < 8

3,705 (89.7)

53.4

 ≥ 8

425 (10.3)

47.3*