Journal article
The impact of the method of consent on response rates in the ISAAC time trends study.
Abstract
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 …
Authors
Ellwood P; Asher MI; Stewart AW
Journal
The International Journal of Tuberculosis and Lung Disease, Vol. 14, No. 8, pp. 1059–1065
Publication Date
August 2010
ISSN
1027-3719