Estimating bias from loss to follow-up in a prospective cohort study of bicycle crash injuries
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چکیده
منابع مشابه
Estimating bias from loss to follow-up in a prospective cohort study of bicycle crash injuries
BACKGROUND Loss to follow-up, if related to exposures, confounders and outcomes of interest, may bias association estimates. We estimated the magnitude and direction of such bias in a prospective cohort study of crash injury among cyclists. METHODS The Taupo Bicycle Study involved 2590 adult cyclists recruited from New Zealand's largest cycling event in 2006 and followed over a median period ...
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15 صفحه اولBias due to incomplete follow up in a cohort study.
AIM To investigate the bias introduced by incomplete follow up in a cohort study of ocular outcome after premature birth. METHODS A geographically defined cohort of children born before 32 weeks' gestation was prospectively recruited at birth to study the ocular outcome at 2 years. On the basis of attendance at 2 years, the children's families were allocated to one of three groups: group 1 at...
متن کاملThe role of multilevel factors in geographic differences in bicycle crash risk: a prospective cohort study
BACKGROUND Regular cycling plays an important role in increasing physical activity levels but raises safety concerns for many people. While cyclists bear a higher risk of injury than most other types of road users, the risk differs geographically. Auckland, New Zealand's largest urban region, has a higher injury risk than the rest of the country. This paper identified underlying factors at indi...
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ژورنال
عنوان ژورنال: Injury Prevention
سال: 2013
ISSN: 1353-8047,1475-5785
DOI: 10.1136/injuryprev-2013-040997