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. Author manuscript; available in PMC: 2019 Feb 28.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2018 Aug 30;29(2):227–237. doi: 10.1038/s41370-018-0053-x

Table 4.

Pearson correlations between exposure metrics. Correlations are those among all measurements (n = 91 rounds of 2-week sampling).

1. PM2.5-
pers(m) 		2. PM2.5-
out(m) 		3. PM2.5-
out(p) 		4. PM2.5-
out(nm) 		5. PM2.5-
in(m) 		6. PM2.5-
in(p) 		7. PM2.5-
pers(m-alt)
2. PM2.5-out(m) 0.69 1.00
3. PM2.5-out(p) 0.63 0.80 1.00
4. PM2.5-out(nm) 0.43 0.70 0.87 1.00
5. PM2.5-in(m) 0.88 0.76 0.55 0.42 1.00
6. PM2.5-in(p) 0.81 0.62 0.77 0.63 0.76 1.00
7. PM2.5-pers(m-alt) 0.88 0.79 0.58 0.46 0.99 0.77 1.00
8. PM2.5-pers(p) 0.80 0.64 0.79 0.65 0.76 1.00 0.77

Notes: Primary comparisons are shaded (see Table 2).