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. Author manuscript; available in PMC: 2014 Nov 21.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2009 Oct 28;20(5):446–456. doi: 10.1038/jes.2009.34

Table 3.

Personal-school site mixed model intercepts and slopes and their 95% CI’s.

Personal EC-School-site EC Personal PM2.5-School-site PM2.5 Personal PM2.5-Rooftop PS154 PM2.5 (NY DEC)
Intercept Slope Intercept Slope Intercept Slope
All subjects (N=583)
0.89 (0.63 – 1.14) 0.49 (0.40 – 0.57) 21.3 (15.3 –27.3) 0.67 (0.44 – 0.89) 22.5 (16.7 – 28.4) 0.59 (0.38 – 0.80)
Excluding MS302 subjects (N=423)
0.72 (0.53 – 0.91) 0.43 (0.35 – 0.66) 24.0 (17.3 – 30.6) 0.45 (0.32 – 0.53) 26.9 (19.2 – 34.6) 0.30 (−0.07 – 0.68)
Excluding ETS exposed subjects (N=478)
0.84 (0.58–1.10) 0.49 (0.38 – 0.56) 22.0 (15.0 – 29.0) 0.56 (0.29 – 0.83) 23.1 (16.3 – 30.0) 0.49 (0.24 – 0.74)

p < 0.05 for beta ≠ 0

coefficients of determination (R2) for predicted vs. actual = 0.35–0.41 for EC models, and 0.52–0.56 for PM models