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Table 5 Pre and Post mean confidence scores and paired t-test results for performing a rescue or CPR

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

  1. *Statistically significant at 0.00625