Lisbeth Skovly Nielsen, Jette Primdahl, Brian Clausen, Ann Bremander
A joint venture: patients' experiences with goal setting in rheumatology rehabilitation - a qualitative study
Disability and rehabilitation
associations higher indoor carbon dioxide co2 concentrations impaired work performance increased health symptoms poorer perceived air quality attributed correlation indoor co2 concentrations indoor air pollutants also influenced rates outdoorair ventilationwe assessed direct effects increased co2 within range indoor concentrations decision makingtwentytwo participants exposed co2 600 1000 2500 ppm officelike chamber six groups group exposed conditions three 25hr sessions 1 day exposure order balanced across groups 600 ppm co2 came outdoor air participants respiration higher concentrations achieved injecting ultrapure co2 ventilation rate temperature constant condition participants completed computerbased test decisionmaking performance well questionnaires health symptoms perceived air quality participants person administering decisionmaking test blinded co2 level data analyzed analysis variance modelsrelative 600 ppm 1000 ppm co2 moderate statistically significant decrements occurred six nine scales decisionmaking performance 2500 ppm large statistically significant reductions occurred seven scales decisionmaking performance raw score ratios 006056 performance focused activity scale increaseddirect adverse effects co2 human performance may economically important may limit energysaving reductions outdoor air ventilation per person buildings confirmation findings needed