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Table 3 Observed means, standard deviations, 95% confidence intervals, sample size and mean differences f or each group at pre-, post- and 6-week post-test.

From: A mobile phone application for the assessment and management of youth mental health problems in primary care: a randomised controlled trial

 

Comparison Group

Intervention Group

Difference

 

N

M (SD)

95% CI

N

M (SD)

95% CI

M diff

P

d

ESA

         

   Pre-test

42

60.6 (11.9)

56.9-64.3

62

61.7 (12.1)

58.7-64.8

1.1

.65

0.09

   Post-test

32

63.1 (11.1)

59.1-67.1

46

64.7 (10.9)

60.9-67.4

1.0

.69

0.09

   6-week

35

62.2 (11.6)

58.2-66.1

47

68.9 (11.2)

65.5-72.1

6.6

.01

0.58

Depression

         

   Pre-test

44

19.4 (10.9)

16.1-22.7

67

20.4 (11.0)

17.8-23.1

1.0

.63

0.09

   Post-test

33

15.2 (8.9)

12.1-18.3

50

16.3 (10.8)

13.3-19.4

1.1

.63

0.11

   6-week

36

12.5 (11.8)

8.5-16.5

50

13.5 (10.5)

10.5-16.5

1.0

.69

0.09

Anxiety

         

   Pre-test

43

11.1 (8.1)

8.6-13.6

67

14.1 (9.7)

11.7-16.5

3.1

.09

0.26

   Post-test

33

10.5 (8.0)

7.7-13.3

50

11.2 (9.1)

8.6-13.7

0.7

.73

0.25

   6-week

35

10.4 (9.6)

7.1-13.7

50

9.8 (9.3)

7.1-12.4

0.6

.76

0.07

Stress

         

   Pre-test

44

16.9 (7.9)

14.5 -19.3

65

20.4 (8.9)

18.2-22.6

3.5

.04

0.40

   Post-test

33

15.8 (8.0)

12.9-18.6

50

17.0 (9.4)

14.3-19.7

1.2

.53

0.14

   6-week

35

13.1 (10.4)

9.6-16.7

50

15.2 (8.6)

12.8-17.6

2.1

.32

0.22

  1. Note: Observed scores provided. N = number of participants used to calculate the mean (M), standard deviation (SD) and 95% confidence interval (CI), Mean difference calculated using t-tests, d = effect size (Cohen's d [51]).
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