Table 1 Diagnostic history and characteristics of respondents from company A
From: Prevalence and interannual changes in multiple chemical sensitivity in Japanese workers
| Â | 2003 | 2006 | 2011 |
|---|---|---|---|
Diagnostic history, % (n) | |||
 Sick house syndrome (SHS) | 0.1 (1) | 0.1 (1) | 2.1 (3) |
 Allergy | 23.1 (192) | 20.7 (151) | 39.6 (57) |
 None | 68.5 (570) | 79.2 (577) | 58.3 (84) |
 No answer | 8.3 (69) | 0 (0) | 0 (0) |
 Total | 100 (832) | 100 (729) | 100 (144) |
Sex, % (n) | |||
 Female | 11.7 (97) | 10.0 (73) | 16.7 (24) |
 Male | 88.3 (735) | 90.0 (656) | 83.3 (120) |
 Total | 100 (832) | 100 (729) | 100 (144) |
Average age (years ± SDa) | 42.8 ± 10.34 | 44.9 ± 10.61 | 41.5 ± 11.04 |