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Table 3 Grading nutrition KA scores in the intervention and control groups

From: Effects of the MyBFF@school obesity intervention program with nutrition education intervention on nutrition knowledge and attitude of secondary schoolchildren: a cluster randomized controlled trial

Parameter

Baseline

Ìý

After 6Ìýmonths

Ìý

Intervention (n = 579)

Control (n = 462)

Chi- square test

Intervention (n = 579)

Control (n = 462)

Chi-square test

Knowledge, n (%)

Overall

n = 579

n = 462

Ìý

n = 579

n = 462

Ìý

 Poor (< 50.00)

55 (9.5)

58 (12.6)

p = 0.013

65 (11.2)

50 (10.8)

p = 0.433

 Fair (50.00–75.00)

358 (61.8)

244 (52.8)

Ìý

339 (58.5)

288 (62.3)

Ìý

 Good (> 75.00)

166 (28.7)

160 (34.6)

Ìý

175 (30.2)

124 (26.8)

Ìý

Gender, n (%)

Boys

n = 234

n = 196

p = 0.400

n = 234

n = 196

p = 0.254

 Poor (< 50.00)

29 (12.4)

24 (12.2)

Ìý

37 (15.8)

21 (10.7)

Ìý

 Fair (50.00–75.00)

140 (59.8)

106 (54.1)

Ìý

142 (60.7)

131 (66.8)

Ìý

 Good (> 75.00)

65 (27.8)

66 (33.7)

Ìý

55 (23.5)

44 (22.4)

Ìý

Girls

n = 345

n = 266

Ìý

n = 345

n = 266

Ìý

 Poor (< 50.00)

26 (7.5)

34 (12.8)

p = 0.010

28 (8.1)

29 (10.9)

p = 0.307

 Fair (50.00–75.00)

218 (63.2)

138 (51.9)

Ìý

197 (57.1)

157 (59.0)

Ìý

 Good (> 75.00)

101 (29.3)

94 (35.3)

Ìý

120 (34.8)

80 (30.1)

Ìý

Attitude, n (%)

Overall

n = 579

n = 462

Ìý

n = 579

n = 462

Ìý

 Poor (< 50.00)

39 (6.7)

32 (6.9)

p = 0.526

27 (4.7)

18 (3.9)

p = 0.820

 Fair (50.00–75.00)

486 (83.9)

396 (85.7)

Ìý

515 (88.9)

413 (89.4)

Ìý

 Good (> 75.00)

54 (9.3)

34 (7.4)

Ìý

37 (6.4)

31 (6.7)

Ìý

Gender, n (%)

Boys

n = 234

n = 196

Ìý

n = 234

n = 196

Ìý

 Poor (< 50.00)

9 (3.8)

10 (5.1)

p = 0.374

7 (3.0)

4 (2.0)

p = 0.300

 Fair (50.00–75.00)

197 (84.2)

170 (86.7)

Ìý

214 (91.5)

174 (88.8)

Ìý

 Good (> 75.00)

28 (12.0)

16 (8.2)

Ìý

13 (5.6)

18 (9.2)

Ìý

Girls

n = 345

n = 266

Ìý

n = 345

n = 266

Ìý

 Poor (< 50.00)

30 (8.7)

22 (8.3)

p = 0.914

20 (5.8)

14 (5.3)

p = 0.534

 Fair (50.00–75.00)

289 (83.8)

226 (85.0)

Ìý

301 (87.2)

239 (89.8)

Ìý

 Good (> 75.00)

26 (7.5)

18 (6.8)

Ìý

24 (7.0)

13 (4.9)

Ìý
  1. Data were presented as mean (standard deviation)