Format

Send to

Choose Destination
See comment in PubMed Commons below
Drug Alcohol Rev. 2013 Sep;32(5):512-8. doi: 10.1111/dar.12042. Epub 2013 Apr 10.

Evaluating recall bias in a case-crossover design estimating risk of injury related to alcohol: data from six countries.

Author information

1
Alcohol Research Group, Public Health Institute, Emeryville, USA.

Abstract

INTRODUCTION AND AIMS:

Prior work suggests that recall bias may be a threat to the validity of relative risk estimation of injury due to alcohol consumption, when the case-crossover method is used based on drinking during the same six hours period the week prior to injury as the control period. This work explores the issue of alcohol recall bias used in the case-crossover design.

DESIGN AND METHODS:

Data were collected on injury patients from emergency room studies across six countries (Dominican Republic, Guatemala, Guyana, Nicaragua, Panama and Canada), conducted in 2009-2011, each with n ≈ 500 except Canada (n = 249). Recall bias was evaluated comparing drinking during two control periods: the same six hours period the day before versus the week before injury.

RESULTS:

A greater likelihood of drinking yesterday compared with last week was seen using data from the Dominican Republic, while lower likelihood of drinking yesterday was found in Guatemala and Nicaragua. When the data from all six countries were combined, no differential drinking between the two control periods was observed.

DISCUSSION AND CONCLUSIONS:

These findings are in contrast to earlier studies showing a downward recall bias of drinking, and suggest that it may be premature to dismiss the last week case-crossover method as a valid approach to estimating risk of injury related to drinking. However, the heterogeneity across countries suggests that there may be some unexplained measurement error beyond random sampling error.

KEYWORDS:

alcohol; case-crossover; injury; recall bias

PMID:
23574580
PMCID:
PMC3766498
DOI:
10.1111/dar.12042
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wiley Icon for PubMed Central
    Loading ...
    Support Center