Titre :
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Reproducibility of retrospective assessment of outdoor time-activity patterns as an individual determinant of long-term ambient ozone exposure. (1997)
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Auteurs :
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N. KUNZLI ;
J. BALMES ;
T. KELLY ;
I.B. TAGER ;
Division of Occupational and Environmental Medicine. University of Caliifornia. San Francisco CA. USA ;
Division of Public Health Biology and Epidemiology. School of Public Health. University of California. Berkeley CA. USA
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Type de document :
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Article
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Dans :
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International journal of epidemiology (vol. 26, n° 6, 1997)
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Pagination :
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1258-1271
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Langues:
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Anglais
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Mots-clés :
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Pollution atmosphérique
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Méthode épidémiologique
;
Epidémiologie
;
Evaluation
;
Exposition
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Long terme
;
Homme
;
Activité
;
Activité physique
;
Questionnaire
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Résumé :
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[BDSP. Notice produite par INIST p0igkR0x. Diffusion soumise à autorisation]. Background. Long-term effects of ambient ozone pollution are not clearly established to date. Epidemiological assessment of these effects might benefit from improved exposure measures. Tools to retrospectively assess long-term time-activity patterns as a potentially important co-predictor of true exposure have not yet been developed. Methods. Three self-completed questionnaires for the retrospective assessment of outdoor time-activity patterns were tested in 168 lifelong residents (ages 17-21) of California. A test-retest design (within 5-7 days) was employed. (1) Based on a set of questions (AQUES) on outdoor'heavy'and'moderate'activity, h/day engaged in activity were derived. Definition of activity levels was based on published data regarding energy expenditure of physical activities. (2) A table format (ATAB) asked quantitative questions for each activity engaged in. (3) A 24-hour-log (A24H) had to be completed to indicate time spent outdoors in four levels of activity (heavy, moderate, light, at rest) on a'typical day' (n=44). Test-retest reliability was assessed. Comparison across approaches was restricted to the subgroup of 44 students that completed all three approaches. Results. All approaches yielded reasonably reliable results (between-test variance 13-39% of total variance, Spearman rank correlations : 0.68-0.86 for time spent in outdoor activities). Population mean values differed across approaches, ranging from 1. (...)
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