Table 1.
Demographics of children and their parents
| Subject characteristic | Age 0–4 years | Age 5–11 years | Age 12–17 years | |||
|---|---|---|---|---|---|---|
| Eye conditions (n = 346), no. (%) | Controls (n = 89), no. (%) | Eye conditions (n = 440), no. (%) | Controls (n = 105), no. (%) | Eye conditions (n = 251), no. (%) | Controls (n = 60), no. (%) | |
| Sex of child | ||||||
| Female | 163 (47) | 49 (55) | 218 (50) | 52 (50) | 126 (50) | 26 (43) |
| Race/ethnicity | ||||||
| Non-Hispanic white | 223 (64) | 57 (64) | 314 (71) | 72 (69) | 186 (74) | 42 (70) |
| Hispanic | 46 (13) | 9 (10) | 39 (9) | 5 (5) | 12 (5) | 3 (5) |
| Other | 25 (7) | 8 (9) | 30 (7) | 9 (9) | 18 (7) | 2 (3) |
| Black/African American | 23 (7) | 2 (2) | 13 (3) | 4 (4) | 13 (5) | 4 (7) |
| Asian | 15 (4) | 10 (11) | 30 (7) | 9 (9) | 17 (7) | 7 (12) |
| More than 1 | 14 (4) | 3 (3) | 14 (3) | 6 (6) | 5 (2) | 2 (3) |
| Parent / legal guardian completing questionnaires | ||||||
| Mother | 281 (81) | 77 (87) | 353 (80) | 92 (88) | 192 (77) | 52 (87) |
| Father | 63 (18) | 12 (13) | 82 (19) | 13 (12) | 53 (21) | 8 (13) |
| Legal guardian | 2 (1) | 0 (0) | 5 (1) | 0 (0) | 6 (2) | 0 (0) |
| Age | ||||||
| Median (interquartile range) | 2 (1–3) | 2 (1–3) | 8 (6–9) | 7 (6–9) | 14 (13–16) | 13 (12–15) |