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

From: Sociodemographic inequities in dental care utilisation among governmental welfare recipients in Japan: a retrospective cohort study

   Analysis 1 Analysis 2
IR, (95% CI) IR, (95% CI)
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)
  1. Analysis 1 includes all eligible participants, and Analysis 2 includes population at risk after excluding cases at the first three months. IR Incidence Ratio, CI Confidence Interval