Table 1.
Study population characteristics (n = 340)
| Overall |
Females |
Males |
||||
|---|---|---|---|---|---|---|
| n or mean | % or SD | n or mean | % or SD | n or mean | % or SD | |
| Sociodemographic and Health Characteristics | ||||||
| Mean age | 41.2 | 13.3 | 41.9 | 13.2 | 37.7 | 13.5 |
| Gender | ||||||
| Female | 279 | 82.1 | ||||
| Male | 61 | 17.9 | ||||
| Race/ethnicity | ||||||
| Non-Hispanic White | 141 | 41.5 | 124 | 44.4 | 17 | 27.9 |
| Non-Hispanic African/Caribbean Immigrant | 126 | 37.1 | 101 | 36.2 | 25 | 41.0 |
| Hispanic | 26 | 7.7 | 18 | 6.5 | 8 | 13.1 |
| Other | 47 | 13.8 | 36 | 12.9 | 11 | 18.0 |
| Mean household income (adj for # supported) | 28340.9 | 13655.1 | 28564.8 | 13559.8 | 27316.8 | 14152.4 |
| Education | ||||||
| Less than high school | 52 | 15.3 | 44 | 15.8 | 8 | 13.1 |
| High school or GED | 106 | 31.2 | 88 | 31.5 | 18 | 29.5 |
| Some college | 136 | 40.0 | 110 | 39.4 | 26 | 42.6 |
| College or more | 46 | 13.5 | 37 | 13.3 | 9 | 14.8 |
| Married or living with partner (n, %yes) | 192 | 56.5 | 155 | 55.6 | 37 | 60.7 |
| Smoker (n, %yes) | 69 | 20.3 | 54 | 19.4 | 15 | 24.6 |
| Number of alcoholic drinks/week | ||||||
| 0 | 245 | 72.1 | 209 | 74.9 | 36 | 59.0 |
| 1-4 | 53 | 15.6 | 39 | 14.0 | 14 | 23.0 |
| 5+ | 42 | 12.4 | 31 | 11.1 | 11 | 18.0 |
| Foreign-born (n, %yes) | 188 | 55.3 | 149 | 53.4 | 39 | 63.9 |
| Mean hourly wage* | 15.4 | 7.2 | 15.8 | 7.3 | 13.4 | 6.3 |
| Mean body mass index* | 27.9 | 5.7 | 28.2 | 5.8 | 26.9 | 5.0 |
| Apnea* (n, %yes) | 16 | 4.8 | 15 | 5.4 | 1 | 1.7 |
| Occupational Characteristics | ||||||
| Number of hours worked/week | 40.1 | 11.9 | 39.5 | 12.1 | 43.0 | 10.4 |
| Any night shift in past 4weeks (n, %yes) | 87 | 25.6 | 68 | 24.4 | 19 | 31.2 |
| Job strain category | ||||||
| Low Strain | 97 | 28.5 | 81 | 29.0 | 16 | 26.2 |
| Passive | 75 | 22.1 | 59 | 21.2 | 16 | 26.2 |
| Active | 85 | 25.0 | 73 | 26.2 | 12 | 19.7 |
| High Strain | 83 | 24.4 | 66 | 23.7 | 17 | 27.9 |
| Occupation | ||||||
| Healthcare Practitioner (RN or LPN) | 72 | 21.2 | 65 | 23.3 | 7 | 11.5 |
| Healthcare support (CNA) | 162 | 47.7 | 147 | 52.7 | 15 | 24.6 |
| Office and administrative | 29 | 8.5 | 28 | 10.0 | 1 | 1.6 |
| Food Service and maintenance | 77 | 22.7 | 39 | 14.0 | 38 | 62.3 |
| Worked overtime in past 4weeks (n, %yes) | 161 | 47.4 | 121 | 43.4 | 40 | 65.6 |
| Worked multiple shifts (n, %yes) | 21 | 6.2 | 17 | 6.1 | 4 | 6.6 |
| Work-family Characteristics | ||||||
| Child in household (n, %yes) | 180 | 52.9 | 150 | 53.8 | 30 | 49.2 |
| Often preoccupied with work while at home (n, %yes) | 29 | 8.5 | 24 | 8.6 | 5 | 8.2 |
| Primary wage earner (n, %yes) | 184 | 54.1 | 153 | 54.8 | 31 | 50.8 |
| Outcome | ||||||
| Mean daily sleep duration (minutes) | 413.2 | 73.7 | 419.4 | 70.9 | 385.0 | 80.3 |
*
Sample sizes are slightly different due to missing data: wage n = 335; BMI n = 319; apnea n = 334.
GED, graduate equivalency degree; RN, registered nurse; LPN, licensed practical nurse; CNA, certified nursing assistant.