Format

Send to

Choose Destination
Am J Ind Med. 2005 May;47(5):434-42.

Comparison of self-reported occupational exposure with a job exposure matrix in an international community-based study on asthma.

Author information

1
Institute for Risk Assessment Sciences, Environmental and Occupational Health Group, Utrecht University, Utrecht, The Netherlands.

Abstract

BACKGROUND:

Self-reports are frequently used to assess occupational exposures in epidemiological studies on asthma, but the validity and influence of asthma status on performance is unclear.

METHODS:

Data on self-reported exposure to air pollutants were obtained for 16,752 randomly selected working individuals from 40 study centers, and compared to exposures obtained by a job exposure matrix (JEM). The influence of current asthma symptoms or medication was investigated.

RESULTS:

Specificity of self-reports amounted to 0.83 and 0.87, and sensitivity 0.48 and 0.42 for asthmatics and non-asthmatics, respectively, when compared with the JEM. Self-reported exposure, but not exposure assessed by the JEM, was more prevalent in areas with a higher community prevalence of asthma.

CONCLUSIONS:

The prevalence of self-reported occupational exposures seems to depend on asthmatic health status at both the individual and the community level. Associations between self-reports and asthma are likely to be biased, especially in pooled analyses combining different areas with varying prevalence rates of asthma.

PMID:
15828067
DOI:
10.1002/ajim.20154
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center