BACKGROUND: Centres in Phases I and III of the International Study of Asthma and Allergies in Childhood (ISAAC) programme used the method of consent (passive or active) required by local ethics committees. METHODS: Retrospectively, relationships between achieved response rates and method of consent for 13-14 and 6-7-year-olds (adolescents and children, respectively), were examined between phases and between English and non-English language centres. RESULTS: Information was obtained for 113 of 115 centres for adolescents and 72/72 centres for children. Both age groups: most centres using passive consent achieved high response rates (>80% adolescents and >70% children). English language centres using active consent showed a larger decrease in response rate. Adolescents: seven centres changed from passive consent in Phase I to active consent in Phase III (median decrease of 13%), with five centres showing lower response rates (as low as 34%). Children: no centre changed consent method between phases. Centres using active consent had lower median response rates (lowest response rate 45%). CONCLUSION: The requirement for active consent for population school-based questionnaire studies can impact negatively on response rates, particularly English language centres, thus adversely affecting the validity of the data. Ethics committees need to consider this issue carefully. / Revisión por pares
| Identifer | oai:union.ndltd.org:PERUUPC/oai:repositorioacademico.upc.edu.pe:10757/625750 |
| Date | 01 August 2010 |
| Creators | Ellwood, P, Asher, M I, Stewart, A W, Chiarella, Pacual, ISAAC Phase III Study Group |
| Contributors | p.ellwood@auckland.ac.nz |
| Publisher | nternational Union against Tubercul. and Lung Dis. |
| Source Sets | Universidad Peruana de Ciencias Aplicadas (UPC) |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/article |
| Format | application/pdf |
| Source | Universidad Peruana de Ciencias Aplicadas (UPC), Repositorio Academico - UPC, The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease, 14, 1060-1065 |
| Rights | info:eu-repo/semantics/openAccess, Attribution-NonCommercial-ShareAlike 3.0 United States, http://creativecommons.org/licenses/by-nc-sa/3.0/us/ |
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