Table 6 Main results

 1 year after listening to the podcast

Mean score, %

Mean score 52.6%

(SD 20.4%)

Mean score 58.9%

(SD 20.6%)

Mean difference: 6.7%

(95% CI 3.3% to 10.1%)

p = 0.0001

 Initially after listening to the podcast

Mean score (%)

Mean score 52.4%

(SD 17.6%)

Mean score 67.8%

(SD 19.6%)

Mean difference: 15.5%

(95% CI 12.5% to 18.6%)

p < 0.0001

 1 year after listening to the podcast

Passing score^b

39.5% of parents

(n = 101/ 256)

47.2% of parents

(n = 126/267)

1.5

(95% CI 1.0 to 2.2)

p = 0.03

9.8% more parents

(95% CI 0.9% to 18.9%)

 Initially after listening to the podcast

Passing score (indicating a basic understanding of the key concepts)^b

37.7% of parents

(n = 103/ 273)

70.5% of parents

(n = 203/288)

4.2

(95% CI 2.9 to 6.0)

p < 0.0001

34.0% more parents

(95% CI 26.2% to 40.7%)

 1 year after listening to the podcast

Mastery score^c

10.5% of parents

(n = 27/256)

19.5% of parents

(n = 52/267)

2.2

(95% CI 1.3 to 3.7)

p = 0.003

9.8% more parents

(95% CI 2.8% to 19.6%)

 Initially after listening to the podcast

Mastery score^c

6.2% of parents

(n = 17/273)

31.6% of parents

(n = 91/288)

7.2

(95% CI 4.1 to 12.4)

p < 0.0001

26.0% more parents

(95% CI 15.2% to 38.8%)