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Table 4 Relative index of inequality for symptoms/disorders according to household income by age groups: results of logistic regression analysis with adjustment for age and sex

From: Association of income with symptoms, morbidities and healthcare usage among Japanese adults

Disorders

<60 years

≥60 years

RII (95% CI)

Goodness of fit

Model

RII (95% CI)

Goodness of fit

Model

Ophthalmopathy

1.51 (1.27–1.80)

 

*

2.45 (2.12–2.82)

*

Otopathy

1.68 (1.40–2.01)

*

2.02 (1.75–2.32)

*

Rhinopathy

1.19 (0.99–1.43)

*

1.19 (0.95–1.50)

*

Respiratory diseases

1.34 (1.12–1.60)

*

1.58 (1.32–1.89)

*

Digestive diseases

1.67 (1.38–2.02)

*

1.86 (1.55–2.23)

*

Dental diseases

1.65 (1.36–1.99)

*

1.65 (1.39–1.95)

 

*

Dermopathy

1.12 (0.93–1.34)

*

1.31 (1.09–1.58)

*

Neck stiffness

1.20 (1.05–1.37)

*

1.71 (1.48–1.98)

*

Lumbago

1.39 (1.21–1.59)

*

1.77 (1.56–2.01)

*

Arthropathy

1.76 (1.46–2.12)

 

*

1.95 (1.68–2.26)

*

Depression

1.59 (1.38–1.84)

 

*

2.03 (1.74–2.36)

*

Total

1.19 (1.09–1.31)

*

1.69 (1.53–1.87)

*

  1. P ≥ 0.05 according to Hosmer–Lemeshow test for goodness of fit; * P < 0.05 according to the score test for significance of model
  2. RII Relative index of inequality, CI confidence interval