Controlled human exposure to diesel exhaust: a method for understanding health effects of traffic-related air pollution

Table 1 Study elements and specific parameters extracted from each study

Study element	Parameters extracted
Diesel exhaust generation	Engine, engine emission standards tier, fuel, load
Key study design elements	Study type, duration of exposure, number and type of exposures, activity during exposure, washout period, concurrent exposures, temperature, humidity
DE exposure composition	PM concentration, NO, NO₂, NO_x, CO, TVOC, formaldehyde, VOCs, HC compounds, EC and OC content, particle size, particle count
FA exposure composition	PM concentration, NO, NO₂, NO_x, CO, TVOC, formaldehyde, VOCs, HC compounds, EC and OC content, particle size, particle count
Participant characteristics	Inclusion criteria, exclusion criteria, sex, age, sample size
Other	Clinicaltrials.gov identifier

CO carbon monoxide, DE diesel exhaust, EC elemental carbon, FA filtered air, HC hydrocarbons, NO nitrogen monoxide, NO₂ nitrogen dioxide, NO_x nitrogen oxides, OC organic carbon, PM particulate matter, TVOC total volatile organic compounds, VOC volatile organic compounds

ISSN: 1743-8977