Table 2 Adjusted incidence ratios for the incidence of dental care utilization among public assistance recipients

Age

by 10 year

0.90 (0.88–0.93)

0.87 (0.84–0.91)

Sex

Male

Ref

Ref

Female

1.14 (1.06–1.22)

1.22 (1.08–1.38)

Working status

No

Ref

Ref

Yes

1.03 (0.94–1.13)

1.15 (0.99–1.34)

Living alone

No

Ref

Ref

Yes

1.08 (1.00–1.16)

1.06 (0.93–1.21)

Nationality

Japanese

Ref

Ref

Other

1.25 (1.05–1.49)

1.53 (1.16–2.01)

Long-term care status

None

Ref

Ref

Support required

0.99 (0.80–1.23)

0.94 (0.64–1.40)

Care needs

1.26 (1.12–1.41)

1.20 (0.95–1.50)

Disabilities certificate

None

Ref

Ref

Mental disability

1.22 (1.10–1.36)

1.30 (1.08–1.56)

Intellectual disability

0.98 (0.75–1.29)

0.65 (0.36–1.19)

Physical disability

1.11 (0.98–1.26)

1.02 (0.80–1.31)

Municipality

A

Ref

Ref

B

0.94 (0.87–1.02)

0.91 (0.79–1.06)