Table 1.
Demographic, Clinical, and Sleep Characteristics of 495 Women
| Characteristic | Mean±SD/n (%) |
|---|---|
| Demographic | |
| Age, y | 37±16 |
| 20–44 y | 348 (70%) |
| ≥45 y | 147 (30%) |
| Race | |
| White | 282 (57%) |
| Black/African‐American | 99 (20%) |
| Asian | 93 (19%) |
| Other | 21 (4%) |
| Ethnicity | |
| Non‐Hispanic | 357 (72%) |
| Hispanic | 138 (28%) |
| Race/Ethnicity | |
| White/Non‐Hispanic | 193 (39%) |
| Minority/Hispanic | 302 (61%) |
| Health insurance | |
| Have | 375 (76%) |
| Do not have/Unsure/Do not know/N.A. | 120 (24%) |
| Employment status | |
| Employed/students | 428 (87%) |
| Not employed | 65 (13%) |
| Education | |
| ≥College (Bachelor's degree/Postgraduate professional degree) | 333 (67%) |
| <College | 162 (33%) |
| Clinical/medical | |
| BMI (kg/m2) | 25.9±5.7 |
| BMI class | |
| Normal weight | 250 (51%) |
| Overweight/obesity | 245 (49%) |
| Habitual sleep | |
| Pittsburgh Sleep Quality Index (PSQI) scorea | 5.6±3.8 |
| Sleep qualityb | |
| Poor (PSQI >5) | 193 (39%) |
| Good (PSQI ≤5) | 302 (61%) |
| Sleep‐onset latency (m)c | 24.9±30.5 |
| Insomnia Severity Index (ISI) Scored | 7.0±6.0 |
| Insomniae | |
| Somewhat, moderate, or severe (ISI≥8) | 188 (38%) |
| None (ISI<8) | 306 (62%) |
BMI indicates body mass index; ISI, Insomnia Severity Index; N.A., Not applicable; PSQI, Pittsburgh Sleep Quality Index.
a
Global sum of PSQI scores; possible range is 0–21 with higher scores indicating poorer quality.27
b
Dichotomous categories determined from PSQI total scores.
c
A subscale of the PSQI.27
d
Global sum of ISI scores; possible range is 0–28 with higher scores indicating more severe insomnia.29
e
Dichotomous categories determined from ISI total scores.