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Table 3 Baseline demographics and health-related characteristics for each group

From: A mobile healthy lifestyle intervention to promote mental health in adolescence: a mixed-methods evaluation

 

Total

(N = 279)

Control group (n = 95)

Intervention groupa (n = 150)

Group diffb

 

n (%)

n (%)

n (%)

P

Gender

   

0.14

 Girl

153 (54.84%)

59 (62.11%)

76 (50.67%)

 

 Boy

124 (44.44%)

36 (37.90%)

72 (48.00%)

 

 Other

2 (0.72%)

0 (0.00%)

2 (1.33%)

 

Education type

   

 < 0.001

 General & tech. track

182 (65.23%)

43 (45.26%)

113 (75.33%)

 

 Vocational track

97 (34.77%)

52 (54.74%)

37 (24.67%)

 

Grade

   

0.15

 1st year of secondary

87 (31.18%)

22 (23.16%)

49 (32.67%)

 

 2nd year of secondary

92 (32.97%)

32 (33.68%)

53 (35.33%)

 

 3rd year of secondary

100 (35.84%)

41 (43.16%)

48 (32.00%)

 

Family Affluence

   

0.98

 Low

80 (28.67%)

28 (29.47%)

45 (30.00%)

 

 Middle

134 (48.03%)

45 (47.37%)

72 (48.00%)

 

 High

65 (23.30%)

22 (23.16%)

33 (22.00%)

 
 

mean (SD)

mean (SD)

mean (SD)

P

Mental health

    

 HRQoL (t-score)

54.11 (6.96)

53.44 (6.40)

54.54 (7.28)

0.12

 Psychol. well-being (t-score)

52.10 (8.00)

52.06 (7.34)

52.12 (8.42)

0.70

 Moods (t-score)

48.57 (9.77)

48.32 (9.00)

48.73 (10.28)

0.50

 Self-Perception (t-score)

52.06 (8.71)

51.97 (8.32)

52.11 (8.97)

0.74

 Peer support (t-score)

54.71 (5.97)

54.18 (6.74)

55.04 (5.42)

0.50

 Resilience (range 1–5)

3.18 (0.64)

3.16 (0.65)

3.20 (0.64)

0.28

 Depressed feelings (t-score)

53.58 (8.53)

54.2 (7.84)

53.4 (9.12)

0.34

Lifestyle behaviors

 LPAc (min/day)

230 (105)

252 (107)

215 (99)

0.001

 MVPAc (min/day)

122 (49)

117 (35)

122 (52)

0.89

 Sedentary timec (min/day)

572 (127)

587 (116)

570 (132)

0.55

 Sleep weekdaysd (min/night)

476 (60)

472 (53)

480 (48)

0.14

 Sleep weekende (min/night)

552 (79)

548 (75)

552 (68)

0.74

 Breakfast freq. (days/week)

5.15 (2.26)

4.87 (2.38)

5.29 (2.19)

0.30

 Sleep quality (range 1–5)

2.87 (0.84)

2.84 (0.83)

2.89 (0.83)

0.63

  1. Abbreviations: LPA light intensity physical activity, MVPA moderate to vigorous intensity physical activity
  2. a Selection of intervention group that used the #LIFEGOALS app (i.e., with in-app duration ≥ 2 min)
  3. b Difference between control and intervention group: χ2-test for categorical variables, t-test or Wilcoxon rank test for continuous variables
  4. c Total: n = 246, control: n = 86, intervention: n = 134
  5. d Total: n = 221, control: n = 88, intervention: n = 112
  6. e Total: n = 229, control: n = 80, intervention: n = 125
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BMC Public Health

ISSN: 1471-2458

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