Table 2.
Age at which children were first introduced to an indoor heated swimming pool
| Age regular swimming/attending pool | AIS patients | Controls | Controls with VSPA | Controls without VSPA |
|---|---|---|---|---|
| Number (%) | Number (%) | Number (%) | Number (%) | |
| 1st year | 46 (58.2) | 24 (31.2) | 16 (64.0) | 8 (15.4) |
| 2nd year | 6 (7.6) | 9 (11.7) | 1 (4.0) | 8 (15.4) |
| 3rd year | 4 (5.1) | 3 (3.9) | 2 (8.0) | 1 (1.9) |
| 4th year | 4 (5.1) | 5 (6.5) | 2 (8.0) | 3 (5.8) |
| 5th year | 7 (8.9) | 7 (9.1) | 1 (4.0) | 6 (11.5) |
| 6th year | 2 (2.5) | 14 (18.2) | 3 (12.0) | 11 (21.2) |
| 7th year or later | 7 (8.9) | 15 (19.5) | 0 (0.0) | 15 (28.8) |
| Never in pool | 3 (3.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Can swim by age 10 years | 44 (55.7) | 43 (55.8) | 19 (76.0) | 24 (46.2) |