Table 2 Study characteristics

 • United States

N = 31

[21, 24, 26, 27, 29, 31,32,33, 36, 37, 42, 46,47,48,49, 53,54,55,56,57, 60, 61, 64,65,66, 69, 70, 75, 78, 80, 81, 85, 88,89,90, 93]

 • Netherlands

N = 11

[28, 30, 38, 39, 44, 50, 52, 58, 62, 71, 72, 79]

 • Australia

N = 4

[23, 34, 35, 83]

 • Canada

N = 3

[40, 41, 63, 92, 94]

 • United Kingdom

N = 3

[67, 68, 86]

 • Belgium

N = 2

[82, 91]

 • Norway

N = 2

[73, 74]

 • Denmark

N = 1

[51, 77, 87]

 • Finland

N = 1

[84]

 • Germany

N = 1

[43]

 • Pakistan

N = 1

[76]

 • Sweden

N = 1

[59]

 • Multiple European countries

N = 2

[25, 45]

 • Physical activity

N = 16

[26, 33, 36, 37, 39, 40, 50, 52, 57, 62, 73, 75, 76, 80, 83, 84, 91, 94]

 • Healthy eating

N = 27

[24, 25, 27, 29, 31, 38, 42,43,44,45, 48, 51, 54, 55, 60, 63, 65, 67, 69,70,71,72, 74, 77, 79, 81, 85, 87, 88, 90, 92, 93]

 • Physical activity and healthy eating

N = 12

[21, 23, 28, 30, 32, 40, 41, 46, 47, 49, 53, 55, 56, 59, 61, 64, 66, 76, 78, 82, 86, 93, 94]

 • Physical activity and sedentary behaviour

N = 3

[34, 35, 73]

 • Physical activity, healthy eating and sedentary behaviour

N = 5

[28, 30, 58, 68, 89]

 • Primary school

N = 45

[21, 24, 27, 29, 31, 34,35,36, 38, 40,41,42,43, 45, 48, 50, 52,53,54,55, 57, 60, 62,63,64,65,66,67,68,69,70, 73,74,75,76, 78,79,80,81,82, 85, 86, 88,89,90,91,92,93, 94]

 • Secondary school

N = 12

[23, 26, 28, 30, 32, 33, 39, 44, 51, 58, 71, 72, 77, 83, 84, 87]

 • Primary and secondary school

N = 6

[25, 37, 46, 47, 49, 56, 59, 61]

Theoretical framework underlying process evaluations

N = 17

[26, 28, 30, 33, 36, 46, 48, 51, 52, 56,57,58, 60,61,62,63, 77, 80, 86, 87, 91, 92]

Fidelity components

N = 120

 • Adherence

N = 26

[24, 25, 28,29,30, 32, 35,36,37,38, 44, 46,47,48,49, 51, 56, 59,60,61, 77, 81, 85,86,87, 90]

 • Dose

N = 50

[21, 23,24,25,26,27,28,29, 31, 33,34,35,36, 38,39,40,41, 43,44,45,46, 48, 50,51,52, 54,55,56,57,58, 60,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68, 70,71,72,73,74,75,76,77,78,79,80, 82, 83, 87, 89,90,91,92,93, 94]

 • Quality of delivery

N = 8

[28, 32, 36, 57, 63, 75, 81, 89, 92]

 • Responsiveness

N = 36

[23, 25, 28, 30, 32, 34, 35, 38,39,40, 42, 44, 46, 48, 51,52,53, 56,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58, 63, 66, 67, 69,70,71,72, 74,75,76,77, 79,80,81,82,83,84, 87,88,89, 92, 94]

 • Differentation

N = 0

 • One component

N = 24

[21, 26, 27, 31, 33, 37, 41,42,43, 45, 47, 49, 50, 53,54,55, 59, 62, 64, 65, 73, 78, 84,85,86, 88, 91, 93]

 • Two components

N = 22

[23, 24, 29, 30, 34, 39, 40, 52, 58, 60, 61, 66,67,68,69, 74, 76, 79, 80, 82, 83, 90, 94]

 • Three components

N = 16

[25, 32, 35, 36, 38, 44, 46, 48, 51, 56, 57, 63, 70,71,72, 75, 77, 81, 87, 89, 92]

 • Four components

N = 1

[28]

 • Five components

N = 0