Table 4.

Adjusted geometric mean (GM) concentrations (95% confidence intervals [CI]) in μg/L of 3-(diethylcarbamoyl)-benzoic acid (DCBA) in various demographic groups.

Variable	GM (95% CI)
Winter, Mexican American	2.83 (1.95–4.12)
Winter, non-Hispanic White	2.58 (1.99–3.36)
Winter, non-Hispanic Black	2.81 (2.21–3.58)
Summer, Mexican American	3.6 (2.27–5.71)
Summer, non-Hispanic White	6.07 (4.45–8.29)
Summer, non-Hispanic Black	3.48 (2.66–4.55)
Winter, 2007–2008	2.87 (1.98–4.17)
Winter, 2009–2010	2.39 (1.93–2.95)
Summer, 2007–2008	3.76 (2.58–5.47)
Summer, 2009–2010	7.28 (4.88–10.85)
6–11 years, Mexican American	5.27 (3.85–7.22)
6–11 years, non-Hispanic White	7.67 (5.07–11.62)
6–11 years, non-Hispanic Black	4.46 (3.33–5.98)
12–19 years, Mexican American	3.1 (2.32–4.14)
12–19 years, non-Hispanic White	6.4 (4.59–8.93)
12–19 years, non-Hispanic Black	3.93 (2.95–5.23)
20–59 years, Mexican American	2.98 (2.13–4.15)
20–59 years, non-Hispanic White	4.04 (3.3–4.95)
20–59 years, non-Hispanic Black	2.93 (2.41–3.56)
60 + years, Mexican American	3.74 (2.71–5.16)
60 + years, non-Hispanic White	3.51 (2.65–4.66)
60 + years, non-Hispanic Black	3.24 (2.36–4.45)
Winter, <$20K	2.87 (2.2–3.74)
Winter, $20–$45K	2.97 (2.11–4.16)
Winter, $45K–$75K	2.2 (1.7–2.84)
Winter, >$75K	2.53 (1.98–3.22)
Summer, <$20K	4.3 (3.15–5.88)
Summer, $20–$45K	5.44 (4.06–7.29)
Summer, $45–$75K	5.16 (4.01–6.64)
Summer, >$75K	5.84 (4.05–8.43)