Table 2.
Demographic Characteristics of the Study Participants and Their Families
| Characteristic | Students Given Spectacles (n=427)a |
|---|---|
| Age, mean (SD), y | 14.1 (0.9) |
| Male sex | 207 (48.5) |
| Monthly household income, ¥ (n=425) | |
| ≤1000 | 116 (27.3) |
| 1001-2000 | 189 (44.5) |
| ≥2001 | 120 (28.2) |
| People in household, median (range), No. | |
| Children | 2 (1-6) |
| Adults | 2 (1-10) |
| Married parents | 415 (97.2) |
| Mother’s education (n=425) | |
| Illiterate | 3 (0.7) |
| Primary school | 80 (18.8) |
| Junior high school | 227 (53.4) |
| Senior high school | 92 (21.6) |
| Technical college | 5 (1.2) |
| University | 18 (4.2) |
| Father’s education (n=424) | |
| Illiterate | 3 (0.7) |
| Primary school | 56 (13.2) |
| Junior high school | 189 (44.6) |
| Senior high school | 144 (34.0) |
| Technical college | 10 (2.4) |
| University | 22 (5.2) |
| Mother’s occupation (n=421) | |
| Unemployed | 126 (29.9) |
| Manual laborer | 172 (40.9) |
| Nonmanual laborer | 123 (29.2) |
| Father’s occupation (n=422) | |
| Unemployed | 60 (14.2) |
| Manual laborer | 230 (54.5) |
| Nonmanual laborer | 132 (31.3) |
a
One survey was missing; data were available for 427 students except as noted. Unless otherwise indicated, data are given as number (percentage) of students. Percentages are based on section totals and, because of rounding, may not total 100.