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Table 4 Repeated measure ANOVA of knowledge and attitude toward breastfeeding (scores) in adolescent mothers and grandmothers (n = 168)

From: Effectiveness of experiential learning with empowerment strategies and social support from grandmothers on breastfeeding among Thai adolescent mothers

Source of variation

SS

df

MS

F

p - value

Adolescents

 Knowledge

  Between subjects

   Intervention

51,858.036

1

51,858.036

4.172

< 0.001

   Error

1019.151

82

12.429

  

  Within subjects

   Time

700.310

1.309

534.888

130.536

< 0.001

   Intervention x time

611.770

1.309

467.262

114.032

< 0.001

   Error

439.921

107.360

4.098

  

 Attitude

  Between subjects

   Intervention

756,152.444

1

756,152.444

9.735

<0.001

   Error

6369.222

82

77.673

  

  Within subjects

   Time

825.294

1.779

463.851

61.612

<0.001

   Intervention x time

719.643

1.779

404.471

53.724

<0.001

   Error

1098.397

145.896

7.529

  

Grandmothers

 Knowledge

  Between subjects

   Intervention

50,858.730

1

50,858.730

2.052

<0.001

   Error

2032.794

82

24.790

  

  Within subjects

   Time

387.175

1.575

245.798

40.098

<0.001

   Intervention x time

496.381

1.575

315.128

51.407

<0.001

   Error

791.778

129.164

6.130

  

 Attitude

  Between subjects

   Intervention

734,724.004

1

734,724.004

7.262

< 0.001

   Error

8296.325

82

101.175

  

  Within subjects

   Time

616.056

2

308.028

40.827

< 0.001

   Intervention x time

487.960

2

243.980

32.338

< 0.001

   Error

1237.317

164

7.545

  
  1. SS sum of squares, df degree of freedom, MS mean squares, F F-test