TABLE 3.

VI prevalence and mean unhealthy days stratified by age category and separated by states with highest and lowest VI prevalences

	Age group (y)	Visually impaired % (95% CI)	Mean unhealthy days (95% CI)	Mean unhealthy days VI (95% CI)	Mean unhealthy days no VI (95% CI)	Ratio of physically unhealthy days in VI vs. no VI
	18–39	2.79 (2.59–3.01)	2.53 (2.46–2.61)	7.01 (6.25–7.77)	2.41 (2.34–2.47)	2.91
	40–64	5.54 (5.30–5.78)	4.74 (4.65–4.83)	12.34 (11.82–12.86)	4.29 (4.20–4.38)	2.87
	≥65	6.60 (6.28–6.93)	5.31 (5.19–5.44)	10.64 (10.00–11.29)	4.94 (4.81–5.06)	2.16
States with the highest visually impaired prevalence by age group
Arkansas	18–39	5.50 (3.41–8.75)	3.77 (2.91–4.64)	13.53 (6.30–20.76)	3.20 (2.47–3.94)	4.22
West Virginia	40–64	10.06 (8.76–11.52)	7.11 (6.60–7.62)	15.14 (13.24–17.04)	6.21 (5.70–6.72)	2.44
West Virginia	≥65	11.45 (9.88–13.22)	6.83 (6.25–7.41)	12.66 (10.64–14.68)	6.08 (5.49–6.67)	2.08
States with the lowest visually impaired prevalence by age group
Alaska	18–39	0.67 (0.13–3.40)	2.40 (1.87–2.93)	0.75*	2.41 (1.88–2.95)	0.31
Wisconsin	40–64	2.66 (1.89–3.72)	4.34 (3.85–4.84)	13.29 (8.77–17.81)	4.10 (3.61–4.59)	3.24
Wisconsin	≥65	3.23 (2.24–4.64)	5.31 (4.67–5.96)	10.20 (5.75–14.66)	5.15 (4.50–5.80)	1.98

*Indicates insufficient sample size to determine confidence intervals. CI = confidence interval; VI = vision impairment.