Table 2 Counts and sample proportions of children with myopia for the different grouping variables which we call risk factors:
From: Myopia in Bulgarian school children: prevalence, risk factors, and health care coverage
Grouping characteristic | Count (Sample proportions) | |||
|---|---|---|---|---|
School | Rural(Small tawn) | Urban (Capital) | Sport(Capital) | Urban (medium sized town) |
28 (8.36%) | 43 (31.38%) | 16 (8.84%) | 149 (19.91%) | |
Age | 6 - 10 | 11 - 15 | ||
128 (19.93%) | 108 (14.22%) | |||
Gender | Male | Female | ||
103 (13.86%) | 133 (20.21%) | |||
Sport | Every day | Not every day | ||
48 (11.74%) | 186 (19.60%) | |||
Screen time | Less than 4 hours | More or equal to 4 hours | ||
179 (17.92%) | 51 (14.87%) | |||
Previous examination | Yes | No | ||
67 (9.81%) | 169 (23.93%) | |||
Parents wear glasses | None of the parents | At least one parent | ||
113 (13.47%) | 114 (23.46%) | |||