Table 2 Diagnostic history and characteristics of respondents from company B
From: Prevalence and interannual changes in multiple chemical sensitivity in Japanese workers
| Â | 2003 | 2011 |
|---|---|---|
Diagnostic history, % (n) | ||
 Sick house syndrome (SHS) | 0.3 (1) | 0.5 (2) |
 Allergy | 24.0 (80) | 29.3 (125) |
 None | 67.9 (226) | 66.9 (285) |
 No answer | 7.8 (26) | 3.3 (14) |
 Total | 100 (333) | 100 (426) |
Sex, % (n) | ||
 Female | 0 (0) | 3.1 (13) |
 Male | 100 (333) | 96.9 (413) |
 Total | 100 (333) | 100 (426) |
Average age (years ± SDa) | 40.5 ± 8.65 | 44.8 ± 9.78 |