Chemical Group
Volatile Organic Compounds (VOCs)
Chemical Name
Project Name
Stockton Air Pollution Exposure Project (SAPEP)
Units
µg/L
Measured in
Urine
Study Group Subset
Geometric mean (95% Confidence Interval)
*
95% Confidence Interval lower
*
95% Confidence Interval upper
*
25th
<LOQ
50th
<LOQ
75th
<LOQ
90th
<LOQ
Number of people tested
18.00
Detection Frequency
1.4%
Limit of Detection (LOD), wet-weight
0.5 µg/L
Indicates Exposure to
1,3-Butadiene
Footnote
*Geometric mean was not calculated because the chemical was found in less than 65% of the study group
‡SAPEP collected multiple urine samples from study participants. The geometric means were estimated using random effects models to account for multiple samples per participant. Percentiles and detection frequencies were based on the total number of samples collected.
Summary Result Type
Weighted - Unweighted
Number of Samples
69
