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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: Am J Public Health. 2014 Oct 16;105(6):1254–1261. doi: 10.2105/AJPH.2014.302176

TABLE 2.

Joint Effects of Particulate Air Pollution and Dietary Antioxidant Intake on Blood Pressure Outcomes: Detroit Healthy Environments Partnership; Detroit, MI; 2002–2003

b Lag 1, b (95% CI) Lag 2, b (95% CI) Lag 3, b (95% CI) Lag 4, b (95% CI)
Systolic BP
 PM2.5 −2.6 (−3.0, −2.2) 4.2 (3.9, 4.5) 3.0 (2.7, 3.3) 7.3 (6.7, 7.9)
 DAI −0.5 (−1.0, 0.0) −0.5* (−1, −0.1) −0.6* (−1.1, −0.1) −0.5* (−0.9, −0.1)
Diastolic BP
 PM2.5 −2.1 (−2.3, −1.8) −1.1 (−1.4, −0.8) 0.6 (0.3, 0.9) 2.7 (2.1, 3.3)
 DAI 0.1 (−0.7, 0.8) 0.0 (−0.7, 0.8) 0.1 (−0.6, 0.8) 0.0 (−0.7, 0.8)
Pulse pressure
 PM2.5 −0.4 (−0.8, 0.0) 5.4 (5, 5.8) 2.5 (2.2, 2.7) 4.8 (4.5, 5.2)
 DAI −0.6* (−1.0, −0.1) −0.6* (−1.1, −0.1) −0.7** (−1.2, −0.2) −0.6* (−1.1, 0)

Note. BP = blood pressure; CI = confidence interval; DAI = dietary antioxidant intake; PM2.5 = particulate matter < 2.5 micrometers in diameter.

*

P < .05;

**

P < .01;

***

P < .001.