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. Author manuscript; available in PMC: 2021 Nov 30.
Published in final edited form as: Sleep Health. 2020 Apr 21;6(5):651–656. doi: 10.1016/j.sleh.2020.01.015

Table 2.

Age-adjusted prevalence of short sleep duration (<7 hours/24 hours) and adjusted prevalence ratio by caregiver status within selected characteristics among 114,496 adult respondents ≥18 yearsa, 2016

Characteristic Caregivers % (95% CI)b Non-caregivers % (95% CI)b Adjusted prevalence ratio (95% CI)c
Age-adjusted prevalence 39.5 (37.4–41.7) 34.2 (33.2–35.3) 1.12 (1.06–1.19)
Sex d
 Men 39.7 (36.4–43.1) 34.8 (33.3–36.2) 1.11 (1.02–1.22)
 Women 39.2 (36.6–41.9) 33.7 (32.3–35.1) 1.13 (1.05–1.22)
Age groups (years)
 18–24 29.2 (22.3–37.3) 31.8 (28.6–35.2) 0.91 (0.69–1.20)
 25–34 43.7 (38.2–49.4) 36.4 (34.0–38.9) 1.13 (0.98–1.30)
 35–44 47.1 (41.6–52.6) 36.5 (34.0–39.1) 1.21 (1.06–1.38)
 45–64 40.6 (37.8–43.5) 36.3 (34.6–38.0) 1.13 (1.04–1.22)
 ≥65 31.3 (27.9–35.0) 27.2 (25.8–28.7) 1.17 (1.04–1.31)
Race/ethnicity
 Non-Hispanic white 38.5 (35.6–41.4) 32.4 (31.3–33.6) 1.14 (1.07–1.22)
 Non-Hispanic black 48.3 (42.0–54.6) 43.8 (40.6–46.9) 1.11 (0.96–1.28)
 Hispanic 41.0 (36.1–46.0) 34.0 (31.8–36.4) 1.10 (0.94–1.29)
 American Indian/Alaska Native 44.8 (35.0–55.2) 34.5 (28.1–41.6) 1.31 (0.99–1.73)
 Other, Non-Hispanic 42.6 (34.9–50.7) 41.2 (36.6–46.1) 0.95 (0.75–1.21)
Education
 Less than high school diploma 45.8 (39.3–52.4) 32.0 (29.4–34.8) 1.30 (1.11–1.52)
 High school diploma or GED 42.2 (38.7–45.7) 36.9 (35.0–38.7) 1.12 (1.01–1.24)
 Some college or technical school 42.9 (39.1–46.8) 37.9 (35.9–39.9) 1.11 (1.00–1.23)
 College graduate 32.7 (29.4–36.2) 29.3 (27.7–30.9) 1.05 (0.95–1.17)
Employment status
 Employed 40.8 (37.7–44.0) 35.4 (33.9–36.9) 1.16 (1.07–1.25)
 Unemployed 49.0 (41.2–56.9) 35.5 (31.5–39.8) 1.20 (1.00–1.44)
 Retired 54.6 (42.7–66.1) 44.4 (34.8–54.5) 1.13 (1.00–1.28)
 Unable to work 48.8 (41.8–55.9) 47.5 (43.3–51.8) 0.97 (0.85–1.10)
 Homemaker or student 32.4 (27.6–37.7) 28.4 (25.2–31.8) 1.01 (0.83–1.23)
Marital status
 Married 37.2 (33.5–41.1) 32.5 (30.9–34.1) 1.12 (1.03–1.21)
 Divorced, separated, widowed 50.1 (43.9–56.2) 40.3 (37.1–43.6) 1.26 (1.15–1.39)
 Never married 38.1 (33.9–42.5) 37.7 (35.4–39.9) 1.00 (0.87–1.15)
Body mass index (kg/m2)
 Underweight (<18.5) 45.9 (35.9–56.2) 33.3 (26.4–41.0) 1.61 (1.13–2.30)
 Normal weigh (18.5–24.9) 35.3 (32.0–38.7) 31.5 (29.8–33.3) 1.10 (0.98–1.22)
 Overweight (25.0–29.9) 37.1 (33.1–41.2) 34.8 (33.0–36.7) 1.07 (0.97–1.19)
 Obese (≥30.0) 42.5 (39.1–45.9) 38.5 (36.4–40.7) 1.10 (1.00–1.21)
 Missing 48.5 (41.0–56.0) 30.0 (26.9–33.4) 1.50 (1.24–1.80)
Cigarette smoking status
 Current smoker 46.3 (41.9–50.8) 42.3 (39.8–44.8) 1.08 (0.97–1.20)
 Former smoker 41.1 (35.9–46.6) 34.6 (32.2–37.1) 1.13 (1.02–1.26)
 Never smoker 36.8 (34.0–39.6) 32.2 (30.9–33.5) 1.12 (1.03–1.22)
Leisure-time physical activity
 Yes 36.8 (34.5–39.2) 32.6 (31.5–33.8) 1.09 (1.02–1.17)
 No 48.7 (43.3–54.2) 38.8 (36.7–41.0) 1.20 (1.08–1.33)
a

Respondents were from the District of Columbia, Puerto Rico, and 19 states (Arizona, Arkansas, California, Connecticut, Colorado, Georgia, Minnesota, Missouri, Montana, Nevada, New Jersey, New York, North Dakota, Ohio, Oregon, South Dakota, Tennessee, Texas, Utah) that administered the caregiving module in 2016.

b

Except for age groups, estimates were age-adjusted to the 2000 projected U.S. population aged ≥18 years. https://www.cdc.gov/nchs/data/statnt/statnt20.pdf.

c

Adjusted prevalence ratio and 95% confidence interval (CI) were derived from multivariable logistic regression model with sex, age group, race/ethnicity, education, employment status, marital status, BMI category, cigarette smoking status, and leisure-time physical activity as covariates.

d

12 respondents who reported “refused to answer” for sex variable were categorized as “other”, which was not showed due to unreliable estimates in the table but were included in the analyses.