Table 1 Comparison of characteristics, OHrQOL, and other variables according to age group

Sex [n (%)]

 Male

49 (49.0%)

20 (48.8%)

29 (49.2%)

0.971*

 Female

51 (51.0%)

21 (51.2%)

30 (50.8%)

Age

 Years (Mean ± SD)

67.3 ± 14.5

53.4 ± 9.2

77.0 ± 8.2

-

Length of hospitalization

 Years (Mean ± SD)

9.4 ± 11.5

10.0 ± 10.0

9.0 ± 12.5

0.072

(ICD code) Type of psychiatric disorder [n (%)]

 Schizophrenia (F20–F29)

46 (46.0%)

25 (61.0%)

21 (35.6%)

< 0.001*

 Dementia (F00–F09)

27 (27.0%)

1 (2.4%)

26 (44.1%)

 Mood disorders (F31, F32)

9 (9.0%)

4 (9.8%)

5 (8.5%)

 Others

18 (18.0%)

11 (26.8%)

7 (11.9%)

OHrQOL

 GOHAI score (Mean ± SD)

49.7 ± 7.9

51.1 ± 8.3

48.7 ± 7.5

0.120**

Number of decayed teeth

 DT (Mean ± SD)

1.7 ± 3.1

2.5 ± 4.2

1.2 ± 2.0

0.124**

Number of missing teeth

 MT (Mean ± SD)

11.1 ± 9.8

6.5 ± 7.2

14.3 ± 10.2

< 0.001**

Number of teeth with fillings

 FT (Mean ± SD)

7.8 ± 6.5

9.6 ± 6.7

6.6 ± 6.1

0.016**

Total number of DT, MT, and FT

 DMFT(Mean ± SD)

20.6 ± 6.8

18.6 ± 6.9

22.1 ± 6.5

0.011**

Oral diadochokinesis (ODK, times/s)

 /pa/ (Mean ± SD)

2.9 ± 2.0

3.9 ± 1.6

2.2 ± 2.0

< 0.001**

 /ta/ (Mean ± SD)

2.9 ± 2.0

4.0 ± 1.6

2.2 ± 2.0

< 0.001**

 /ka/ (Mean ± SD)

2.7 ± 1.8

3.4 ± 1.5

2.2 ± 1.9

0.002**

EAT-10 group [n (%)]

 0–2

55 (55.0%)

28 (68.3%)

27 (45.8%)

0.026*

 ≥ 3 (Suspected dysphagia)

45 (45.0%)

13 (31.7%)

32 (54.2%)