Table 4.
Prevalence of high astigmatism (worse eye cylinder power ≥3.00 diopters) in African-American and Hispanic children, stratified by age, in the Multi-Ethnic Pediatric Eye Disease Study.
| Age group in months |
N | Prevalence of astigmatism ≥3.00 D n (%)* |
|||
|---|---|---|---|---|---|
| AA | Hisp | AA | Hisp | p value** | |
| 6 to 11 | 277 | 296 | 6 (2.2) |
16 (5.4) |
0.04 |
| 12 to 23 | 549 | 543 | 6 (1.1) |
10 (1.8) |
0.30 |
| 24 to 35 | 545 | 572 | 3 (0.6) |
10 (1.8) |
0.06 |
| 36 to 47 | 532 | 532 | 4 (0.8) |
18 (3.4) |
0.003 |
| 48 to 59 | 548 | 543 | 7 (1.3) |
16 (3.0) |
0.06 |
| 60 to 72 | 543 | 544 | 11 (2.0) |
22 (4.0) |
0.05 |
| Total | 2994 | 3030 | 37 (1.2) |
92 (3.0) |
<0.001 |
AA: African American; Hisp: Hispanic; D: diopters.
*
Percentage of total in corresponding age and ethnic group
**
p value: p value for comparison of proportions between ethnicities using Chi-square test The worse eye is defined as the eye with the largest absolute amount of cylindrical refractive error.