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Table 2 Comparison between baseline and the three-month follow-up, stratified by intervention and control group

From: Dietary habits after a physical activity mHealth intervention: a randomized controlled trial

Characteristics

Intervention

Control

 

All (n = 72)

All (n = 74)

Baseline

3-month

Within group

Baseline

3-month

Within group

Between groups

Mean ± SD1

Mean ± SD

p-value2

Mean ± SD

Mean ± SD

p-value2

p-value3

Dietary index4

7.9 ± 2.0

8.1 ± 1.8

0.46

7.5 ± 1.9

7.5 ± 1.9

0.74

0.31

Dietary variables

 Fruits and vegetables (g/day)

436 ± 249

447 ± 216

0.69

439 ± 251

415 ± 275

0.29

0.29

 Vegetables (g/day)

256 ± 172

258 ± 168

0.92

236 ± 172

235 ± 170

0.95

0.70

 Fruit (g/day)

180 ± 160

189 ± 126

0.62

203 ± 150

182 ± 166

0.29

0.45

 Fibre (g/day)

27 ± 11

27 ± 10

0.71

27 ± 10

25 ± 13

0.22

0.50

 Vitamin C (mg/day)

124 ± 68

122 ± 54

0.86

121 ± 71

115 ± 68

0.35

0.47

 Snacks (g/day)

26 ± 21

26 ± 21

0.96

32 ± 38

32 ± 35

0.97

0.51

 Saturated fat (g/day)

30 ± 13

29 ± 13

0.41

29 ± 12

29 ± 13

0.73

0.53

 Unsaturated fat (g/day)

49 ± 20

48 ± 18

0.40

46 ± 21

45 ± 19

0.48

0.65

 Whole grains (g/day)

63 ± 42

60 ± 40

0.45

61 ± 35

57 ± 34

0.12

0.70

 Energy (kcal)

2081 ± 727

2004 ± 665

0.23

1965 ± 644

1971 ± 805

0.80

0.43

 

n (%)

n (%)

 

n (%)

n (%)

  

Fruits and vegetables

  

0.64

  

0.49

 

 < 400 g/day

40 (55.6)

38 (52.8)

 

38 (51.4)

41 (55.4)

  

 ≥ 400 g/day

32 (44.4)

34 (47.2)

 

36 (48.7)

33 (44.6)

  

Dietary index

  

0.65

  

0.22

 

Low adherence (0–4 p)

3 (4.5)

1 (1.5)

 

4 (5.6)

4 (5.6)

  

Moderate adherence (5–8 p)

35 (52.2)

37 (55.2)

 

48 (66.7)

42 (58.3)

  

High adherence (9–12 p)

29 (43.3)

29 (43.3)

 

20 (27.8)

26 (36.1)

  
  1. 1SD Standard deviation. Statistical significance is defined as p < 0.05
  2. 2Differences between baseline and the three-month follow-up, stratified by intervention and control group using paired samples t-tests (continuous variables) or Wilcoxon signed-rank test (categorical variables)
  3. 3Differences between intervention and control group at the three-month follow-up using analysis of covariance
  4. 4n = 139