Prevalence of disabilities
| Prevalence (95% CI) | |
| Washington disability categories | |
| WDQ1—seeing | 5.9 (4.4 to 7.8) |
| WDQ2—hearing | 3.6 (2.7 to 4.8) |
| WDQ3—mobility | 12.8 (9.7 to 16.8) |
| WDQ4—cognition | 4.8 (3.5 to 6.7) |
| WDQ5—self-care | 3.3 (2.3 to 4.7) |
| WDQ6—communication | 1.8 (1.1 to 2.6) |
| At least one disability | 20.3 (16.3 to 24.9) |
WDQ, Washington Disability Questionnaire.