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Accid Anal Prev. 1989 Dec;21(6):509-16.

Are there really shortcuts? Estimating seat belt use with self-report measures.

Author information

1
University of Michigan, Transportation Research Institute, Ann Arbor 48109-2150.

Abstract

We examined the utility of estimating rates of automobile seat belt use with self-report measures. Self-report measures overestimate belt use rates compared to observational surveys of the same population. Laws mandating seat belt use did not substantially affect the degree to which self-reports are upwardly biased. We found self-report measures overestimate observed belt use by 8.9 to 19.4 percentage points or by a factor of 1.2 to 2. Our best estimate is that self-reported seat belt use rates be discounted by 12 percentage points to estimate actual belt use rates.

PMID:
2629759
[Indexed for MEDLINE]
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