Table 1.

Frequency distribution of the type and magnitude of anisometropia stratified by age group and race/ethnicity in the Multi-Ethnic Pediatric Eye Disease Study^╫

	Spherical Equivalent Anisometropia n (%)				Cylindrical Anisometropia n (%)				Vector Axis Anisometropia n (%)
Age group in months	Hispanic		African-American		Hispanic		African-American		Hispanic	African-American
	≥1.0D	≥3.0D	≥1.0D	≥3.0D	≥1.0D	≥3.0D	≥1.0D	≥3.0D	≥0.5	≥0.5
6–11	23 (7.76)	1 (0.34)	13 (4.69)	0 (0.00)	29 (9.80)	1 (0.34)	26 (9.39)	0 (0.00)	61 (20.61)	62 (22.38)
12–23	27 (4.97)	1 (0.18)	30 (5.46)	2 (0.36)	34 (6.26)	2 (0.37)	30 (5.46)	0 (0%)	66 (12.15)	75 (13.66)
24–35	24 (4.20)	2 (0.35)	19 (3.49)	2 (0.37)	26 (4.55)	2 (0.35)	26 (4.77)	2 (0.37)	56 (9.79)	68 (12.48)
36–47	17 (3.20)	3 (0.56)	20 (3.76)	3 (0.56)	35 (6.58)	3 (0.56)	17 (3.20)	0 (0%)	51 (9.59)	54 (10.15)
48–59	17 (3.13)	2 (0.37)	22 (4.01)	3 (0.55)	26 (4.79)	1 (0.18)	15 (2.74)	0 (0%)	42 (7.73)	50 (9.12)
60–72	21 (3.84)	2 (0.37)	23 (4.24)	1 (0.18)	20 (3.68)	1 (0.18)	22 (4.05)	0 (0%)	39 (7.17)	46 (8.47)
Total	129 (4.26)	11 (0.36)	127 (4.24)	11 (0.37)	170 (5.61)	10 (0.33)	136 (4.54)	2 (0.07)	315 (10.40)	355 (11.86)
Trend Test p-values: All age groups
Two-sided	0.0061	0.6631	0.4171	0.6947	0.0018	0.5576	0.0003	0.5261	<0.0001	<0.0001
Trend Test p-values: 12 – 72 months
p-values	0.2083	0.6381	0.4734	0.8373	0.1036	0.4917	0.0674	0.3199	0.0023	0.0011
Chi-square test p-values: 6–11 months vs 12 – 72 months
p-values	0.0016	1.0000*	0.6956	0.6138*	0.0010	1.0000*	<0.0001	1.0000*	<0.0001	< 0.0001

^*Fisher’s Exact Test P-values.

^╫Total number of African American and Hispanic children examined was 2994 and 3030 respectively.

D = diopters