1. Three earlier studies that assessed the relation between ventilation rate and occurrence of symptoms'41518 20 reported a significant association between low ventilation rates and the occurrence of symptoms, and three studies'61719 did not
2. The present study provides new evidence of an association between high ventilation rates and the risk of symptoms. This could indicate that mechanical ventilation systems may affect the indoor air quality by changing the physical property of air or by being a source of indoor air pollution. An alternative explanation is that high ventilation rates indicate a reaction to an existing indoor air problem. This observation should be interpreted with caution, because of the limitations of the study design
3. Sick building syndrome: prevalence studies;Finnegan, M.J.; Pickering, C.A.C.; Burge, P.S.;BMJ,1984
4. Indoor air in office building and human health. Experimental and epidemiologic study of the effects of mechanical ventilation;Jaakkola, J.J.K.;IndoorAir; Health Services Research by the National Board of Health in Finland, No 41. In Finnish with an English summary. Doctoral thesis.) 2a Jaakkola JJK, Heinonen OP, Seppanen 0. Mechanical ventilation in office buildings and the sick building syndrome. An experimental and epidemiological study,1986
5. The "sick" building syndrome in the office environment: the Danish Town Hall study;Skov, P, Valbj0rn 0; DISG;Environ Int,1987