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The PIAMA project's Natural History study: data collection from parents of three- and four-year-olds

De Natuurlijk Beloop studie van het PIAMA onderzoek: Verslag van de gegevensverzameling op de leeftijd van drie en vier jaar

Synopsis

The Natural History study forms part of the Prevention and Incidence of Asthma and Mite Allergy (PIAMA) project. PIAMA is a birth cohort study aimed at investigating prevention, incidence and risk factors pertaining to asthma and inhalation allergy. Recruitment of pregnant women for the PIAMA study took place between March 1996 and September 1997. The participating children (n=3291) in the Natural History study were born between July 1996 and October 1997. They will be followed until they are eight years old. Reported here is the collection of data on the children at age three and again at age four. The data collection procedure and response to the questionnaire are described in detail. Results are summarised in tabular form. Of the original 3291 participants 150 (4.6%) were lost-to-follow-up before the age of three and 162 (4.9%) before the age of four. Questionnaires for three-year-olds were therefore sent to 3141 parents and questionnaires for four-year-olds to 3129 parents. Questionnaires for three-year-olds were completed by 3028 (96.4%) participants and for four-year-olds by 2949 (94.2%). Results presented in the report pertain to characteristics of participants who were lost-to-follow-up, and to the children's health, the use of health care services, and functional and social limitations experienced by children with asthma and by their families.
 

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