Reported rescue rates by swimming group, age group and time period
| Time period | Age (years) | SwimSafe (SS) | Natural swimmer (NS) | χ2 SS vs NS | p Value | ||
|---|---|---|---|---|---|---|---|
| Number | Rate/1000 in group (95% CI) | Number | Rate/1000 in group (95% CI) | ||||
| Previous month | 6–8 | 6 | 4.5 (1.6 to 9.8) | 6 | 4.2 (1.5 to 9.3) | 0.01 | 0.92 |
| 9–11 | 18 | 8.5 (5.0 to 13.5) | 9 | 4.3 (2.0 to 8.3) | 2.82 | 0.09 | |
| 12–14 | 5 | 10.5 (3.4 to 24.5) | 4 | 8.5 (2.2 to 21.2) | 0.13 | 0.72 | |
| 6–14 | 29 | 7.4 (4.9 to 10.6) | 19 | 4.8 (2.9 to 7.5) | 2.18 | 0.13 | |
| Previous year | 6–8 | 17 | 12.8 (7.5 to 20.5) | 15 | 10.7 (6.0 to 17.6) | 0.26 | 0.6 |
| 9–11 | 61 | 29.1 (22.3 to 37.2) | 47 | 22.9 (16.9 to 30.3) | 1.55 | 0.21 | |
| 12–14 | 12 | 25.4 (13.2 to 43.9) | 17 | 35.4 (20.8 to 56.2) | 0.81 | 0.36 | |
| 6–14 | 90 | 23.1 (18.6 to 28.3) | 79 | 20.1 (15.9 to 25.0) | 0.83 | 0.36 | |
Total of 48 rescues in 1 month and 169 in 1 year; 18 rescues excluded as beyond last 365 days.