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Table 1 Main characteristics of the included studies

From: Effectiveness and process evaluation in obesity and type 2 diabetes prevention programs in children: a systematic review and meta-analysis

Author/Year Country Sample Size Gender Mean Age Setting Intervention duration
Croker et al. 2012 [28] UK 72 Not reported 10.3 ± 1.6 Hospital 12 months
Danielsen et al. 2011 [29] Norway 49 24 male; 25 female 10.6 ± 1.2 Family based/primary care 12 months
Davis et al. 2012 [30] USA 222 93 male; 129 female 9.4 ± 1.1 School 10–15 weeks
Eather et al. 2013 [31] Australia 213 108 male; 105 female 10.7 ± 0.6 School 8 weeks
Elder et al. 2013 [32] UK 541 243 male; 298 female 6.6 ± 0.7 Recreation Center 2 years
Foley et al. 2016 [33] New Zealand 251 142 male; 109 female 11.25 Family based/Home 6 months
Gerards et al. 2015 [34] Netherlands 86 38 male; 48 female 7.2 ± 1.4 School 14 weeks
Hollis et al. 2016 [35] Australia 1150 male 543; female 583 12.0 School 24 months
Jones et al. 2015 [36] Australia 37 male 20; female 17 9.7 ± 0.8 School 7 months
Kalarchian et al. 2009 [37] USA 192 83 male; 109 female 10.2 ± 1.2 Medical Center 18 months
Kovacs et al. 2009 [38] Hungary 51 23 male; 28 female 9.9 ± 1.3 School 15 weeks
Larsen et al. 2016 [39] Denmark 115 51 male; 64 female 12.0 ± 0.4 Day camp 1 year
Li et al. 2010 [40] China 4700 2242 female; 2458 male 9.3 ± 0.7 School 2 years
Lison et al. 2012 [26] Spain 110 not reported 11.9 ± 2.2 Hospital 6 months
Maddison et al. 2011 [41] New Zealand 322 male 235; female 87 11.6 ± 1.1 School 6 months
Maddison et al. 2012 [42] New Zealand 322 male 235; female 87 11.6 ± 1.1 School 24 weeks
Maddison et al. 2014 [43] New Zealand 251 male 142; 109 female 11.2 School/Community center 24 weeks
Magnusson et al. 2012 [44] Iceland 321 173 male; female 148 7.3 ± 0.3 School 2 year
Monteiro et al. 2015 [45] Brazil 32 16 female; 18 male 11.0 ± 1.5 Family based/Community 20 weeks
Nemet et al. 2008 [46] Israel 22 14 females; 8 males 10.2 ± 0.5 Health center and nutritional clinic 3 months
Nemet et al. 2011 [47] Israel 795 437 male; 358 female 5.2 ± 0.3 Kindergartens 12 weeks
Nowicka et al. 2009 [48] Sweden 76 40 male; 36 female 10.5 Obesity Clinic 6 months
Safdie et al. 2013 [49] Mexico 830 415 male; 415 female 9.7 ± 0.7 School 18 months
Simon et al. 2008 [51] France 954 527 males; 527 female 11.7 ± 0.7 School 4 years
Sighn et al. 2009 [50] Netherlands 1108 549 male, 559 female 12.7 School 20 month
Waters et al. 2018 [52] Australia 2965 Not reported 8.5 School 3.5 years
Williamson et al. 2012 [53] USA 2060 male 854; Female 1206 10.5 ± 1.2 School 28 months
Yackobovitch Gavan et al. 2009 [54] Israel 162 81 male; 81 female 8.3 ± 1.6 Medical Center 12 weeks
Yin et al. 2012 [55] USA 574 270 male; 304 female 8.7 ± 0.5 School 3 years
Casazza et al. 2012 [56] USA 26 26 female 12.4 ± 0.3 Family based 16 weeks
Copeland et al. 2013 [57] USA 699 Not reported 13.5 Not reported 24 months
Greening et al. 2011 [24] USA 450 234 male; 216 female 8.34 ± 1.3 School 9 months
Gutin et al. 2008 [58] USA 206 97 male; 109 female 8.5 ± −0.6 School 3 year
Johnston et al. 2009 [59] USA 60 33 male; 27 female 12.3 ± 0.7 School 2 years
Kalavainen et al. 2011 [25] Finland 70 28 male; 42 female 8.1 ± 0.8 Family oriented 6 months
Khan et al. 2014 [60] USA 220 117 male; 103 female 8.8 ± 0.5 School 9 month
Lau et al. 2014 [61] Hong Kong 48 36 male; 12 female 10.4 ± 0.9 School 6 weeks
Meyer et al. 2014 [62] Switzerland 289 153 male; 136 female 10.6 ± 0.3 School 3 year
Marild et al. 2012 [63] Sweden 66 28 male; 38 female 10.8 ± 1.1 School 12 month
Rush et al. 2011 [64] New Zealand 1348 686 male; 662 female 7.5 School 2 years
Velazquez Lopez et al. 2014 [65] Mexico 49 23 male; 26 female 11.2 ± 2.7 Family medicine Unit 16 weeks