Table 1 Summary of previously reviewed studies where population attributable risk (PAR) for occupational exposures and asthma either have been presented or derived from published data.
Type of study | Studies Included | PAR | ||
|---|---|---|---|---|
Range | Mean | Median | ||
Cross-sectional, general population | 16* | 2%–45% | 17% | 17.5% |
Case-control studies | 6† | 2%–33% | 20% | 21.5% |
Asthma clinical cohorts or case series | 6 | 6%–21% | 12% | 11.5% |
Theoretical or consensus | 3 | 2%–9% | 6% | 8% |
All | 31 | 2%–45% | 15.2% | 15% |