| Total | (1) Little information n (%) | (2) Moderate information n (%) | (3) Detailed information n (%) | |||
| 157 | 33 | (21.0) | 73 | (46.5) | 51 | (32.5) |
Age (years) |
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2 | 3 | 2 | (66.7) | 1 | (33.3) | 0 | ( 0.0) |
3 | 8 | 7 | (87.5) | 1 | (12.5) | 0 | ( 0.0) |
4 | 13 | 6 | (46.2) | 5 | (38.5) | 2 | (15.4) |
5 | 5 | 1 | (20.0) | 3 | (60.0) | 1 | (20.0) |
6 | 14 | 4 | (28.6) | 8 | (57.1) | 2 | (14.3) |
7 | 10 | 4 | (40.0) | 5 | (50.0) | 1 | (10.0) |
8 | 12 | 3 | (25.0) | 7 | (58.3) | 2 | (16.7) |
9 | 7 | 1 | (14.3) | 5 | (71.4) | 1 | (14.3) |
10 | 12 | 0 | (0.0) | 7 | (58.3) | 5 | (41.7) |
11 | 10 | 1 | (10.0) | 7 | (70.0) | 2 | (20.0) |
12 | 13 | 2 | (15.4) | 4 | (30.8) | 7 | (53.8) |
13 | 16 | 1 | (6.3) | 8 | (50.0) | 7 | (43.8) |
14 | 7 | 1 | (14.3) | 3 | (42.9) | 3 | (42.9) |
15 | 9 | 0 | (0.0) | 3 | (33.3) | 6 | (66.7) |
16 | 5 | 0 | (0.0) | 1 | (20.0) | 4 | (80.0) |
17 | 8 | 0 | (0.0) | 2 | (25.0) | 6 | (75.0) |
18 | 5 | 0 | (0.0) | 3 | (60.0) | 2 | (40.0) |