Format

Send to

Choose Destination
See comment in PubMed Commons below
Inj Prev. 2005 Feb;11(1):48-52.

Effect of recall on estimation of non-fatal injury rates: a community based study in Tanzania.

Author information

1
Centre for International Health, University of Bergen, Norway. moshiro@student.uib.no

Abstract

STUDY OBJECTIVE:

To investigate the effect of recall on estimation of non-fatal injury rates in Tanzania.

DESIGN:

Retrospective population based survey.

SETTING:

Eight branches in an urban area and six villages in a relatively prosperous rural area in Tanzania.

SUBJECTS:

Individuals of all ages living in households selected by cluster sampling.

MAIN OUTCOME MEASURES:

Estimated non-fatal injury rates calculated at each of the 12 recall periods (one to 12 months before the interview).

RESULTS:

Out of a population of 15 223 persons, 509 individuals reported 516 injuries during the preceding year. Of these 313 (61.5%) were males and 196 (38.5%) females. The data showed notable declining incidence rates from 72 per 1000 person-years when based on a one month recall period to 32.7 per 1000 person-years for a 12 month recall period (55% decline). The decline was found for injuries resulting in fewer than 30 days of disability whereas rates for severe injuries (disability of 30 days or more) did not show a consistent variation with recall period. Decline in injury rates by recall period was higher in rural than in urban areas. Age, sex, and education did not notably affect recall.

CONCLUSIONS:

Longer recall periods underestimate injury rates compared with shorter recall periods. For severe injuries, a recall period of up to 12 months does not affect the rate estimates. It is essential that a recall period of less than three months be used to calculate injury rates for less severe injuries.

PMID:
15691990
PMCID:
PMC1730168
DOI:
10.1136/ip.2004.005645
[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 HighWire Icon for PubMed Central
    Loading ...
    Support Center