Table 1.
Geometric mean and selected percentiles of 3-(diethylcarbamoyl)-benzoic acid (DCBA) concentrations in urine (in μg/L first row and in μg/g creatinine second row) for the U.S. population 6 years of age and oldera.
Data from National Health and Nutrition Examination Survey 2007–2010.
| Survey years | Geometric mean |
Selected percentile (95% confidence interval) |
Sample size | ||||
|---|---|---|---|---|---|---|---|
| (95% confidence limit) | 50th | 75th | 90th | 95th | |||
| Total | 07–08 | 3.50 (2.64–4.64) | 2.37 (1.88–3.10) | 9.14 (5.61–14.5) | 33.9 (20.5–53.1) | 79.2 (37.9–145) | 2538 |
| 3.60 (2.79–4.65) | 2.79 (2.14–3.55) | 8.55 (5.49–13.2) | 27.3 (17.8–47.9) | 70.8 (34.1–170) | 2537 | ||
| 09–10 | 4.54 (3.35–6.15) | 3.40 (2.31–4.95) | 13.8 (8.63–20.6) | 51.9 (31.1–108) | 165 (57.8–464) | 2735 | |
| 4.74 (3.48–6.46) | 3.35 (2.30–5.26) | 12.9 (8.53–20.6) | 44.6 (28.3–86.3) | 131 (47.0–405) | 2735 | ||
| Age group | |||||||
| 6–11 years | 07–08 | 4.44 (3.73–5.29) | 3.44 (2.70–5.87) | 12.7 (9.54–15.9) | 42.0 (24.2–70.4) | 79.7 (44.9–114) | 378 |
| 5.64 (4.72–6.75) | 4.84 (3.65–5.78) | 14.2 (10.7–19.8) | 47.7 (34.2–55.1) | 88.6 (47.9–182) | 378 | ||
| 09–10 | 6.44 (3.72–11.1) | 5.35 (2.58–8.86) | 18.5 (8.15–37.9) | 83.8 (28.4–439) | 316 (41.2–3970) | 385 | |
| 8.72 (5.03–15.l) | 6.42 (4.02–11.6) | 23.5 (13.2–36.7) | 75.4 (28.6–673) | 365 (46.2–4980) | 385 | ||
| 12–19 years | 07–08 | 5.26 (3.47–7.98) | 4.37 (2.68–5.98) | 13.1 (6.81–25.8) | 35.4 (20.4–71.2) | 71.2 (30.7–700) | 380 |
| 4.08 (2.81–5.93) | 2.96(2.14–5.36) | 11.0 (6.38–16.0) | 24.3 (14.8–53.4) | 53.4 (19.3–345) | 379 | ||
| 09–10 | 6.58 (4.49–9.66) | 4.63 (2.82–8.64) | 18.9 (10.7–33.6) | 87.8 (32.9–186) | 186 (31.1–1130) | 398 | |
| 5.65 (3.76–8.50) | 3.76 (2.56–6.22) | 16.5 (7.29–31.7) | 68.6 (25.3–182) | 154 (25.3–1270) | 398 | ||
| 20–59 years | 07–08 | 3.33 (2.56–4.35) | 2.23 (1.83–2.90) | 7.95 (5.05–14.5) | 30.8 (17.4–53.1) | 75.6 (39.3–131) | 1157 |
| 3.34 (2.61–4.27) | 2.73 (1.99–3.46) | 7.57 (4.92–12.1) | 24.8 (14.9–44.7) | 57.8 (30.9–117) | 1157 | ||
| 09–10 | 4.39 (3.29–5.86) | 3.33 (2.23–4.95) | 14.0 (8.36–20.9) | 51.4 (32.6–95.8) | 138 (52.9–280) | 1300 | |
| 4.41 (3.25–5.97) | 2.98 (2.11–5.32) | 11.7 (7.71–19.6) | 39.1(24.7–82.6) | 112 (51.3–228) | 1300 | ||
| 60 years and older | 07–08 | 2.78 (1.75–4.42) | 1.64 (.936–3.06) | 6.15 (3.08–16.9) | 34.7 (16.3–75.4) | 103 (32.4–200) | 623 |
| 3.42 (2.33–5.02) | 2.47 (1.45–3.64) | 7.33 (4.25–16.8) | 33.8 (15.9–86.0) | 93.3 (34.2–244) | 623 | ||
| 09–10 | 3.42 (2.39–4.91) | 2.13 (1.45–4.00) | 9.63 (5.33–17.1) | 35.4 (19.7–63.8) | 103 (43.2–346) | 652 | |
| 4.06 (2.95–5.59) | 2.68 (2.10–3.96) | 10.8 (6.79–15.9) | 37.7 (22.2–51.1) | 108 (42.7–393) | 652 | ||
| Sex | |||||||
| Males | 07–08 | 4.15 (2.88–6.00) | 2.90 (2.13–4.34) | 11.3 (6.63–19.7) | 37.7 (20.7–82.0) | 112 (34.7–556) | 1269 |
| 3.46 (2.46–4.87) | 2.72 (1.76–3.73) | 8.68 (5.34–14.4) | 27.8 (16.9–69.4) | 87.0 (27.8–403) | 1269 | ||
| 09–10 | 5.58 (3.94–7.90) | 4.39 (2.67–6.24) | 18.7 (10.8–30.6) | 78.3 (37.3–174) | 199 (96.2–525) | 1340 | |
| 4.97 (3.49–7.08) | 3.29 (2.14–5.94) | 14.7 (9.13–24.0) | 60.0 (28.5–134) | 185 (74.8–433) | 1340 | ||
| Females | 07–08 | 2.97 (2.32–3.80) | 2.06 (1.64–2.59) | 6.84 (4.41–10.8) | 30.8 (15.0–40.8) | 52.6 (36.4–103) | 1269 |
| 3.74 (2.99–4.68) | 2.88 (2.27–3.63) | 8.55 (5.36–13.2) | 27.2 (16.2–46.3) | 54.8 (34.2–117) | 1268 | ||
| 09–10 | 3.73 (2.79–4.98) | 2.76 (1.87–4.24) | 9.91 (6.35–15.9) | 36.2 (22.4–70.4) | 94.9 (40.2–278) | 1395 | |
| 4.54 (3.40–6.05) | 3.35 (2.39–4.67) | 11.8 (7.55–18.4) | 35.3 (24.2–53.4) | 77.6 (36.7–252) | 1395 | ||
| Race/ethnicity | |||||||
| Non-Hispanic whites | 07–08 | 3.47 (2.35–5.14) | 2.22 (1.65–3.19) | 9.12 (4.82–17.0) | 36.5 (17.7–82.0) | 86.9 (32.9–356) | 1064 |
| 3.78 (2.69–5.32) | 2.82 (2.05–4.02) | 8.70 (5.23–14.9) | 30.7 (16.7–57.2) | 76.9 (26.7–432) | 1064 | ||
| 09–10 | 5.48 (3.83–7.84) | 4.31 (2.64–6.25) | 17.7 (10.5–28.4) | 67.9 (32.6–195) | 200 (63.8–832) | 1199 | |
| 5.97 (4.13–8.64) | 4.41 (2.61–7.43) | 17.4 (10.7–26.7) | 61.1 (29.0–189) | 189 (56.4–849) | 1199 | ||
| Mexican Americans | 07–08 | 3.70 (2.57–5.33) | 3.26 (1.87–5.17) | 9.63 (5.93–17.6) | 28.0 (14.7–69.1) | 69.1 (27.5–133) | 490 |
| 3.79 (2.57–5.58) | 3.60 (1.99–5.96) | 9.91 (6.55–16.9) | 27.8 (15.0–60.6) | 60.6 (24.4–107) | 490 | ||
| 09–10 | 2.63 (1.61–4.28) | 2.03 (.932–4.71) | 7.35 (4.22–14.5) | 23.1 (12.5–48.2) | 48.9 (26.0–94.3) | 599 | |
| 2.74 (1.75–4.28) | 2.03 (1.12–5.18) | 7.57 (3.92–14.0) | 23.3 (13.6–31.8) | 37.4 (23.6–90.5) | 599 | ||
| Non-Hispanic blacks | 07–08 | 4.36 (3.18–5.96) | 3.54 (2.24–6.04) | 10.3 (6.78–17.4) | 31.9 (19.3–51.6) | 62.4 (40.4–103) | 562 |
| 3.33 (2.46–4.49) | 2.74 (1.91–3.76) | 7.07 (4.88–11.9) | 22.5 (12.6–45.1) | 53.9 (28.7–103) | 561 | ||
| 09–10 | 3.91 (2.85–5.35) | 3.22 (2.24–4.75) | 9.53 (5.88–14.4) | 23.4 (18.0–33.4) | 38.4 (29.1–60.5) | 497 | |
| 2.98 (2.26v3.94) | 2.41 (1.70–3.37) | 6.73 (4.34–9.46) | 16.5 (13.0–20.4) | 30.6 (19.4–51.1) | 497 | ||
a
The 95% confidence intervals are shown in parentheses. Participants not defined by the three racial/ethnic groups shown were included only in the total population estimate.