Table 4 Adjusted prevalence ratios of good to excellent self-rated dental health
From: Self-rated dental health and dental insurance: modification by household income
PR | (95% CIs) | P | |
|---|---|---|---|
Sex | |||
Male | 0.91 | (0.85–0.99) | 0.024 |
Female (ref.) | . | ||
Age group | |||
30 – 39 (ref.) | - | ||
40 – 49 | 1.00 | (0.92–1.09) | 0.968 |
50 – 61 | 0.89 | (0.82–0.98) | 0.012 |
Tooth brushing | |||
Less than twice a day (ref.) | - | ||
Twice a day or more | 1.14 | (1.05–1.22) | 0.001 |
Income group | |||
<$40 000 | 0.59 | (0.49–0.72) | <.000 |
$40 000– < $80 000 | 0.78 | (0.66–0.91) | 0.002 |
$80 000– < $120 000 | 0.84 | (0.71–1.00) | 0.051 |
$120 000+ (ref.) | - | . | |
Dental insurance | |||
Insured | 0.96 | (0.85–1.11) | 0.627 |
Uninsured (ref.) | - | . | |
Interaction | |||
Insured × < $40 000 | 1.33 | (1.00–1.77) | 0.051 |
Insured × $40 000– < $80 000 | 1.21 | (1.01–1.46) | 0.043 |
Insured × $80 000– < $120 000 | 1.12 | (0.92–1.36) | 0.260 |