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Table 3 Comparisons of Epinephrine Excretion Rate (ng/min) at Work, Home, and during Sleep by Age Group and Ethnicitya

From: The effects of age and ethnicity on the circadian variation of catecholamines and cortisol in employed women

Ethnicity   Age Group
18–29.9 30–39.9 40–49.9
Work Home Sleep Work Home Sleep Work Home Sleep
N \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD N \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD N \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD \( \overline{\mathrm{x}} \) SD
European-American 7 5.08 7.08 2.92 2.09 0.88 0.50 18 6.25 4.57 4.93 3.78 3.74 6.55 13 5.03 3.42 3.55 2.43 4.62 5.34
African-American 13 6.33 3.44 4.84 3.89 3.30 3.57 9 4.91 1.85 5.21 5.59 1.57 1.08 6 6.72 7.58 3.39 2.36 1.82 2.16
Asian-American 3 3.02 1.65 1.73 1.51 0.39 0.33 4 6.21 2.52 3.03 2.04 1.15 0.88 5 2.94 1.56 1.81 2.40 0.59 0.29
Hispanic American 8 8.13 2.38 4.17 3.01 1.34 1.03 5 3.49 2.02 2.41 2.57 0.47 0.32 4 5.36 1.60 3.49 2.48 1.09 0.60
Total 31 6.19 4.81 3.93_ 3.20 1.96 2.61 36 5.53 3.60 4.44_ 4.03 2.46 4.80 28 5.07 4.24 3.20 2.37 2.80 4.09
  1. \( \overline{\mathrm{x}} \) mean, SD standard deviation
  2. aWork, Home>Sleep by ethnicity, age and overall, p < .001