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01.12.2017 | Research article | Ausgabe 1/2017 Open Access

BMC Public Health 1/2017

Impact of school policies on non-communicable disease risk factors – a systematic review

Zeitschrift:
BMC Public Health > Ausgabe 1/2017
Autoren:
Ankur Singh, Shalini Bassi, Gaurang P. Nazar, Kiran Saluja, MinHae Park, Sanjay Kinra, Monika Arora
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12889-017-4201-3) contains supplementary material, which is available to authorized users.

Abstract

Background

Globally, non-communicable diseases (NCDs) are identified as one of the leading causes of mortality. NCDs have several modifiable risk factors including unhealthy diet, physical inactivity, tobacco use and alcohol abuse. Schools provide ideal settings for health promotion, but the effectiveness of school policies in the reduction of risk factors for NCD is not clear. This study reviewed the literature on the impact of school policies on major NCD risk factors.

Methods

A systematic review was conducted to identify, collate and synthesize evidence on the effectiveness of school policies on reduction of NCD risk factors. A search strategy was developed to identify the relevant studies on effectiveness of NCD policies in schools for children between the age of 6 to 18 years in Ovid Medline, EMBASE, and Web of Science. Data extraction was conducted using pre-piloted forms. Studies included in the review were assessed for methodological quality using the Effective Public Health Practice Project (EPHPP) quality assessment tool. A narrative synthesis according to the types of outcomes was conducted to present the evidence on the effectiveness of school policies.

Results

Overall, 27 out of 2633 identified studies were included in the review. School policies were comparatively more effective in reducing unhealthy diet, tobacco use, physical inactivity and inflammatory biomarkers as opposed to anthropometric measures, overweight/obesity, and alcohol use. In total, for 103 outcomes independently evaluated within these studies, 48 outcomes (46%) had significant desirable changes when exposed to the school policies. Based on the quality assessment, 18 studies were categorized as weak, six as moderate and three as having strong methodological quality.

Conclusion

Mixed findings were observed concerning effectiveness of school policies in reducing NCD risk factors. The findings demonstrate that schools can be a good setting for initiating positive changes in reducing NCD risk factors, but more research is required with long-term follow up to study the sustainability of such changes.
Zusatzmaterial
Additional file 1: Search strategy for Ovid Medline. (DOCX 34 kb)
12889_2017_4201_MOESM1_ESM.docx
Additional file 2: Table S1. Quality assessment of the selected studies. (DOCX 39 kb)
12889_2017_4201_MOESM2_ESM.docx
Literatur
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