The Continuum of Severity of Functional Impairment Due to Indoor Air Symptoms: Prevalence and Determinants.

WORK environment; SOCIAL determinants of health; ASTHMA; FUNCTIONAL status; MULTIPLE regression analysis; IRRITABLE colon; AVOIDANCE conditioning; INDOOR air pollution; ENVIRONMENTAL health; SURVEYS; SOCIOECONOMIC factors; QUESTIONNAIRES; DISABILITIES; SICK building syndrome; COMORBIDITY; ENVIRONMENTAL exposure; EPIDEMIOLOGICAL research; LONGITUDINAL method

Objective: The aim of the study is to study functional impairment due to indoor air related symptoms and associated characteristics. Methods: A questionnaire survey of a random sample of Finnish people aged 25 to 64 years. Analyses were done using multivariate multinomial logistic regression. Results: A total of 23.1% reported indoor air-related symptoms, 1.8% severe functional impairment due to symptoms, 5.3% moderate, 11.1% mild and 4.9% reported no impairment. Those with severe functional impairment showed the strongest associations with comorbid diseases, for example, astlinia and irritable bowel syndrome, perceived sensitivities to several environmental factors, like chemicals, and likelihood of having symptoms in multiple organs, while those with no or little functional impairment showed weak or even inverse associations. Similar results emerged with severity of indoor air-related symptoms. Conclusions: Individuals with indoor air-related symptoms are a very heterogeneous group. This should be better considered iii future research and clinical practice. [ABSTRACT FROM AUTHOR]

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