From: Impact of a surfer rescue training program in Australia and New Zealand: a mixed methods evaluation
Variable | Pre-score mean (SD) | Post-score mean (SD) | Mean Difference | t | df | p | Cohen’s d |
---|---|---|---|---|---|---|---|
Rescue | |||||||
 All | 3.2 (1.03) | 4.2 (0.64) | 1 (0.87–1.13) | 15.53 | 234 | < 0.001* | 1.16 |
 Male | 3.33 (1.01) | 4.28 (0.62) | 0.95 (0.8–1.1) | 12.47 | 158 | < 0.001* | 1.14 |
 Female | 2.93 (1.05) | 4.04 (0.67) | 1.11 (0.86–1.35) | 9.04 | 73 | < 0.001* | 1.26 |
 Age 18–29 | 3.12 (1.12) | 4.12 (0.72) | 1 (0.71–1.29) | 6.86 | 49 | < 0.001* | 1.06 |
 Age 30–39 | 2.99 (1.19) | 4.25 (0.59) | 1.27 (1–1.53) | 9.60 | 66 | < 0.001* | 1.36 |
 Age 40–49 | 3.33 (0.98) | 4.14 (0.69) | 0.81 (0.56–1.06) | 6.41 | 57 | < 0.001* | 0.96 |
 Age 50–59 | 3.29 (0.81) | 4.24 (0.58) | 0.95 (0.7–1.21) | 7.57 | 40 | < 0.001* | 1.34 |
 Age 60 +  | 3.63 (0.6) | 4.37 (0.6) | 0.74 (0.35–1.13) | 3.99 | 18 | 0.007 | 1.23 |
CPR | |||||||
 All | 3.14 (1.25) | 4.18 (0.66) | 1.04 (0.91–1.18) | 15.06 | 234 | < 0.001* | 1.04 |
 Male | 3.1 (1.23) | 4.24 (0.68) | 1.04 (0.89–1.2) | 12.97 | 158 | < 0.001* | 1.06 |
 Female | 3.2 (1.29) | 4.14 (0.65) | 1.04 (0.77–1.31) | 7.69 | 73 | < 0.001* | 1.01 |
 Age 18–29 | 2.9 (1.33) | 4.14 (0.76) | 1.24 (0.88–1.6) | 6.90 | 49 | < 0.001* | 1.15 |
 Age 30–39 | 3 (1.34) | 4.22 (0.65) | 1.22 (0.96–1.49) | 9.12 | 66 | < 0.001* | 1.17 |
 Age 40–49 | 3.16 (1.12) | 4.14 (0.63) | 0.98 (0.74–1.23) | 8.07 | 57 | < 0.001* | 1.08 |
 Age 50–59 | 3.59 (1.2) | 4.24 (0.7) | 0.66 (0.37–0.95) | 4.63 | 40 | < 0.001* | 0.67 |
 Age 60 +  | 3.26 (0.99) | 4.16 (0.5) | 0.89 (0.5–1.28) | 4.82 | 18 | 0.001* | 1.14 |