Table 1
Enrollment Rates by Age and Type of Enrollment
| Age | Full Enrollment* | Partial Enrollment* | Marginal Enrollment* | Failed to Enroll* | Total* |
| 1.5–3 yr old | 69 (5.90%) | 28 (2.39%) | 16 (1.37%) | 144 (12.31%) | 257 (21.97%) |
| 3–6 yr old | 239 (20.43%) | 29 (2.48%) | 17 (1.45%) | 10 (0.85%) | 295 (25.21%) |
| 7–8 yr old | 86 (7.35%) | 6 (0.51%) | 1 (0.09%) | 1 (0.09%) | 94 (8.03%) |
| Adults | 431 (36.84%) | 41 (3.50%) | 23 (1.97%) | 29 (2.48%) | 524 (44.79%) |
| Total | 825 (70.51%) | 104 (8.89%) | 57 (4.87%) | 184 (15.73%) | 1,170 (100%) |
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Prob > χ2: < 0.0001.
Full enrollment = a participant had acceptable images from both eyes; partial enrollment = a participant had an acceptable image from at least one eye; marginal enrollment = a participant had marginal images from both eyes; failure to enroll = unacceptable images.
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↵* Number (%).
