Table 3.
Associations between measures of HDL and short-term exposure to fine particulate air pollution on the day of blood collection and the days prior
| Model | Change in HDL per 5 μg/m3 higher average PM2.5 prior to blood draw | |||
|---|---|---|---|---|
| Day of blood draw | 1 day prior | 3 days prior | 5 days prior | |
| HDL-C (mg/dL) | ||||
| Minimally adjusted Model | −0.14 (−0.37, 0.10) | −0.06 (−0.28, 0.16) | −0.06 (−0.34, 0.23) | −0.20 (−0.54, 0.14) |
| Final model | 0.02 (−0.21, 0.26) | 0.05 (−0.17, 0.28) | 0.01 (−0.28, 0.30) | −0.06 (−0.42, 0.29) |
| HDL-P (μmol/L) | ||||
| Minimally adjusted Model | −0.04 (−0.15, 0.06) | −0.06 (−0.15, 0.04) | −0.11 (−0.23, 0.02) | −0.17 (−0.32, −0.02) |
| Final model | −0.06 (−0.17, 0.06) | −0.06 (−0.17, 0.04) | −0.13 (−0.27, 0.01) | −0.21 (−0.38, −0.04) |
Abbreviations: HDL = high-density lipoproteins, PM = particulate matter
Minimally adjusted model is adjusted only for age, site, sex, and race/ethnicity
Final adjusted model is adjusted for the factors in the minimally adjusted model plus BMI, education, physical activity (MET min-wk), smoking (never/former/current), current alcohol use (y/n) diabetes (normal/IFG/Untreated/Treated), hypertension (y/n), use of lipid-lowering drugs (y/n), HOMA-IR, log CRP, LDL-C, and triglycerides