Long-term field survey about IAQ and occupants' health of 60 sick houses in Japan

Hiroshi Yoshino, Yoshida Mariko, Ikeda Koichi, Nozaki Atsuo, Kakuta Kazuhiko, Hojo Sachiko, Yoshino Hideaki, Amano Kentaro, Netsu Koji, Ishikawa Satoshi

Research output: Contribution to journalArticlepeer-review


In order to determine the causes of SHS (Sick House Syndrome), a field survey on indoor air quality and occupants' health conditions was investigated in 60 sick houses in Japan. They were investigated for six summer seasons from 2000 to 2005. The measurements of chemical substance concentration, air tightness, air change rate and a questionnaire survey about their dwellings and health conditions were carried out. Medical examination was also conducted on occupants having heavy symptoms. As a result, the number of rooms where formaldehyde concentrations exceeded the guideline is 82%. TVOC concentration in 75% of rooms exceeded the recommended value. Based on analyses with t-test, the concentration of formaldehyde, toluene, ethyl-benzene, xylene, p-dichlorobenzene and TVOC in houses of occupants with SHS is higher than that in houses of healthy occupants (p < 0.05). As to occupant's health, the most frequently claimed symptom was 'airway/mucous' disorder such as eye irritation and coughing, followed by 'gastrointestinal' disorder and 'skin' irritation.

Original languageEnglish
Pages (from-to)209-212
Number of pages4
JournalJournal of Harbin Institute of Technology (New Series)
Issue numberSUPPL.
Publication statusPublished - 2007 Jan
Externally publishedYes


  • Field survey
  • Formaldehyde and VOC
  • Sick house syndrome (SHS)

ASJC Scopus subject areas

  • Engineering(all)


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