Table 3.
Project and design | Age | Sample size (N) | Effect size (CI or ± SD) | p-value | Outcome | Follow-up |
---|---|---|---|---|---|---|
ICAPS [18] | 12 year | N = 475 intervention | 0.3 kg/m2 | P = 0.05 | ∆ BMI2 at follow-up | 4 years |
RCT (randomization at school level) | N = 479 control | |||||
Movi 1 [20] | 8-10 years | N = 375 intervention | Boys: intervention: 30% (b) to 28% (f) | Prevalence of overweight at baseline (b) and follow-up (f) | 2 years | |
N = 546 control | control: 33% (b) to 32% (f) | |||||
Girls: intervention: 32% (b) to 26% (f) | ||||||
control: 29% (b) to 27% (f) | ||||||
Copenhagen school child [22] | 6-8 years | N = 243 intervention | Boys: intervention: +9.3 (±3.1) kg | P = 0.6 | Body weight | 3 years |
Quasi experimental trial | N = 138 control | control: +9.5 (± 3.4) kg | ||||
Girls: intervention: +9.0 (±3.1) kg | P = 0.5 | |||||
control: +9.3 (±3.2) kg | ||||||
EPODE [23] | ||||||
Longitudinal | 5-12 years | Boys: N = 421 –305–262–312–336 | Boys: 9.0%-10.2% -9.5% -7.7% -7.4% | Prevalence overweight at time points: | 12 years | |
Girls: N = 383–296–253–280–297 | Girls: 14.1%-18.6% -17.0% -13.6% -10.4% | 1992-2000-2002-2003-2004 | ||||
Prevalence overweight | ||||||
Quasi experimental trial (cross-sectional at endpoint only) | 5-12 years | N = 633 intervention | Intervention: 8.8% | P < 0.05 | BMI | |
N = 349 control | Control: 17.8% | |||||
Boys: intervention: 15.6 kg/m2 | P < 0.05 | |||||
control: 16.7 kg/m2 | ||||||
Girls: intervention: 15.7 kg/m2 | P < 0.05 | |||||
Control: 16.4 kg/m2 | ||||||
Children study [24] | 10 year | N = 321 intervention | Intervention: 2.1 (1.9-2.4) kg | P = 0.1 | ∆ Body weight | 1 year |
Clustered RCT (school is level of randomisation) | N = 325 control | Control: 4.7 (4.5-4.9) kg | ||||
Intervention: −1.1 (−1.2 - -0.9) kg | P < 0.05 | BMI | ||||
Control: +0.1 (−0.03- +0.2) kg | ||||||
B-fit [25] | 6-12 years | N = 539 | 2008: 17% (4%) | Prevalence overweight (obesity) at time points: 2008-2010 | 2 years? | |
Longitudinal (pre-post test design) | 2010: 15% (2%) | |||||
GO-Overvecht 1 [26] | 4-12 years | ? | 2004/05: 26% | P < 0.05 | Prevalence overweight at time points: 2004/05 – 2008/09 | 4 years? |
2008/09: 20% | ||||||
12-15 years | N = 3532 | no significant reduction | n.s. | |||
Slagkracht [27] | 7 years | N = 261 (GE) | GE: +0.2 | ∆ BMI | 1 year | |
Longitudinal (pre-post test design) in two countries (Germany (GE) and the Netherlands (NL) | N = 296 (NL) | NL: +0.33 | ||||
GE 2009: 15.0% | Prevalence in BMI percentiles 7 and 8 (heavy overweight and obesity)4 | 2009 - 2010 | ||||
2010: 14.6% | ||||||
NL 2009: 12.8% | ||||||
2010: 12.0%5 | ||||||
Jönköping County [28] | 6,5 years | N = 3362 – 3310 – 3298 – 3319 | 14% (5%) - 12% (4%) - 15% (5%) -13% (4%) | Prevalence overweight (obesity) at time points: 2004/05 - 2006/07 -2009/10 – 2011/2012 | 7 years? | |
Cross-sectional | 10,5 years | N = 4180 – 3631 – 3201 – 3250 | 17% (4%) - 17% (3%) -17% (4%) -18% (4%) | |||
14 years | N = 4641 – 4183 – 3258 – 3193 | 15% (3%) - 14% (3%) - 17% (5%) -17% (5%) | ||||
16,5 years | N = 3162 – 3875 – 3526 – 2906 | 15% (4%) - 15% (3%) - 14%(4%) -16% (6%) |
1Study design involving comparison with a control region/condition; 2BMI = Body Mass Index; 3corresponding with normal effects of growth, according to the authors; 4prevalence of percentile 8 (obesity) increased from 3.3 to 4.2%.