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Table 4 Comparisons of Cortisol Excretion Rate (μg/24h) 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

45.22

40.82

26.14

33.00

13.12

6.05

17

41.97

30.51

30.55

39.60

29.84

14.58

12

36.91

23.82

21.89

39.60

33.48

13.73

African-American

13

43.12

28.12

18.13

13.02

47.09

60.76

8

26.04

21.34

26.85

32.59

37.00

36.82

7

52.0

64.46

23.04

24.69

16.60

5.97

Asian-American

3

19.21

9.26

8.71

3.33

25.93

18.14

4

82.14

61.76

15.52

5.22

54.22

28.09

5

37.05

26.42

16.96

12.47

59.49

47.82

Hispanic American

8

66.86

49.38

22.69

16.96

26.07

17.52

5

24.13

15.40

8.58

5.81

21.05

6.50

4

27.13

7.08

27.21

25.26

36.91

32.35

Total

31

47.41

37.60

20.20

19.45

31.95

42.10

34

40.33

35.01

24.68

32.57

33.10

23.51

28

39.32

36.48

22.06

20.39

34.39

27.20

  1. \( \overline{\mathrm{x}} \) mean, SD standard deviation
  2. aWork>Home Sleep by ethnicity, age and overall, p < .001; Sleep>Home bu ethnicity, age and overall, p < 002