Table 2.

Prevalence of best-seeing eye uncorrected, presenting and best-corrected vision impairment ≥6 lines by age, gender, schooling and residence.

	Number Examined	Prevalence UCVI	UCVI	Prevalence PVI	PVI	Prevalence BCVI	BCVI
		N (%)	OR [95% CI]	N (%)	OR [95% CI]	N (%)	OR [95% CI]
Age (years)
45–54	787	75 (9.5%)	Reference	45 (5.7%)	Reference	9 (1.1%)	Reference
55–64	645	112 (17.4%)	1.67 [1.28; 2.17]*	71 (11.0%)	1.61 [1.14; 2.26]†	15 (2.3%)	2.62 [1.00; 1.91]†
65–74	348	108 (31.0%)	3.13 [2.19; 4.48]*	95 (27.3%)	3.81 [2.44; 5.97]*	38 (10.9%)	11.11 [5.80; 21.26]*
≥75	245	143 (58.4%)	9.27 [6.93, 12.39]*	134 (54.7%)	11.21 [7.37, 17.05] *	86 (35.1%)	38.74 [16.43, 91.36]*
Gender
Male	992	221 (22.3%)	Reference	190 (19.1%)	Reference	83 (8.4%)	Reference
Female	1033	217 (21.0%)	1.29 [1.05; 1.58] †	155 (15.0%)	0.93 [0.74; 1.18]	65 (6.3%)	0.78 [0.55; 1.11]
Schooling
None	231	96 (41.6%)	Reference	91 (39.4%)	Reference	50 (21.6%)	Reference
Less than Primary	541	160 (29.6%)	0.80 [0.59; 1.07]	141 (26.1%)	0.88 [0.63; 1.23]	59 (10.9%)	0.83 [0.44; 1.54]
Primary	575	95 (16.5%)	0.56 [0.41; 0.75]*	73 (12.7%)	0.52 [0.34; 0.79]†	29 (5.0%)	0.57 [0.24; 1.39]
Secondary	293	40 (13.6%)	0.66 [0.40; 1.10]	20 (6.8%)	0.47 [0.25; 0.90]†	6 (2.0%)	0.41 [0.08; 2.01]
≥High School	385	47 (12.2%)	0.47 [0.27; 0.82]†	20 (5.2%)	0.24 [0.14; 0.42]*	4 (1.0%)	0.23 [0.59; 0.88]†
Residence
Urban	1169	226 (19.3%)	Reference	165 (14.1%)	Reference	80 (6.8%)	Reference
Rural	856	212 (24.8%)	1.27 [0.97; 1.66]	180 (21.0%)	1.53 [1.06; 2.21]†	68 (7.9%)	1.38 [1.00; 1.91]†
ALL	2025	438 (21.6%)		345 (17.0%)		148 (7.3%)

UCVI – uncorrected vision impairment; PVI – presenting vision impairment; BCVI – best-corrected vision impairment; OR – adjusted odds ratio; CI – confidence interval.

^*,†p < 0.001.

^†p ≤ 0.05.