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National Study of Health and Growth: effect of change in design with reference to efficiency of mixed longitudinal studies for measuring trends.
The National Study of Health and Growth (NSHG) is a surveillance system which monitors the growth of primary school children in England and Scotland, set up in 1972 following changes in the school milk and welfare system. However, the study contained few children from inner city areas or ethnic mino...
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| Autors principals: | , |
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
1987
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| Matèries: | |
| Accés en línia: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1290995/ https://ncbi.nlm.nih.gov/pubmed/3500311 |
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