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Table 1 Demographics of 5 ethnic groups: means (95% confidence intervals)

From: Ethnicity, sleep, mood, and illumination in postmenopausal women

  European American Hispanic American African American Asian-Pacific American Native-Aleut American
Percentage of Sample 72.2% 13.7% 9.4% 4.0% 0.7%
Age 69.8 (69.1–70.6) 62.4 (60.6–64.2) 61.7 (59.4–64.0) 61.7 (58.0–65.5) 62.3 (48.8–75.8)
Education (~years) 14.6 (14.4–15.0) 13.0 (12.0–14.0) 14.4 (13.4–15.4) 15 (13.6–16.4) 13.4 (9.8–16.8)
Body Mass Index 26.5 (25.7–27.2) 28.0 (26.5–29.6) 30.3 (28.3–32.4) 23.3 (21.6–25.0) 29.8
Employed 16% (12%–21%) 43% (30%–56%) 46% (31%–62%) 50% (25%–75%) 100%
Currently Married 60% (55%–65%) 62% (50%–75%) 57% (42%–72%) 78% (58%–98%) 67% (1–100%)
Current smoking 7% (3%–11%) 19% (5%–33%) 29% (11%–48%) 0% 0%