Quantitative relationship of sick building syndrome symptoms with ventilation rates
- 1 April 2009
- journal article
- Published by Hindawi Limited in Indoor Air
- Vol. 19 (2), 159-165
- https://doi.org/10.1111/j.1600-0668.2008.00575.x
Abstract
Data from published studies were combined and analyzed to develop best-fit equations and curves quantifying the change in sick building syndrome (SBS) symptom prevalence in office workers with ventilation rate. For each study, slopes were calculated, representing the fractional change in SBS symptom prevalence per unit change in ventilation rate per person. Values of ventilation rate, associated with each value of slope, were also calculated. Linear regression equations were fitted to the resulting data points, after weighting by study size. Integration of the slope-ventilation rate equations yielded curves of relative SBS symptom prevalence vs. ventilation rate. Based on these analyses, as the ventilation rate drops from 10 to 5 l/s-person, relative SBS symptom prevalence increases approximately 23% (12% to 32%), and as ventilation rate increases from 10 to 25 l/s-person, relative prevalence decreases approximately 29% (15% to 42%). Variations in SBS symptom types, building features, and outdoor air quality may cause the relationship of SBS symptom prevalence with ventilation rate in specific situations to differ from the average relationship predicted in this paper. On average, providing more outdoor air ventilation will reduce prevalence rates of sick building syndrome (SBS) symptoms. However, given the costs of energy use, including increased risks of climate change, it is important to balance the benefits and risks of increased ventilation. This paper provides initial estimates of how the incremental health benefits per unit of increased ventilation diminish at higher levels of ventilation.Keywords
This publication has 10 references indexed in Scilit:
- Ventilation and performance in office workIndoor Air, 2006
- The performance and subjective responses of call-center operators with new and used supply air filters at two outdoor air supply ratesIndoor Air, 2004
- Effects of temperature and outdoor air supply rate on the performance of call center operators in the tropicsIndoor Air, 2004
- Ventilation and health in non-industrial indoor environments: report from a European Multidisciplinary Scientific Consensus Meeting (EUROVEN)Indoor Air, 2002
- Association of Ventilation Rates and CO2 Concentrations with Health andOther Responses in Commercial and Institutional BuildingsIndoor Air, 1999
- Ventilation rate in office buildings and sick building syndrome.Occupational and Environmental Medicine, 1995
- The Sick Building Syndrome (SBS) in Office Workers. A Case-Referent Study of Personal, Psychosocial and Building-Related Risk IndicatorsInternational Journal of Epidemiology, 1994
- Air recirculation and sick building syndrome: a blinded crossover trial.American Journal of Public Health, 1994
- The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building SyndromeNew England Journal of Medicine, 1993
- Indoor air quality requirements for healthy office buildings: Recommendations based on an epidemiologic studyEnvironment International, 1991