Table 1.
General characteristics of ovarian cancer patients according to sleep quality (N = 669). Values are numbers (percentages) unless stating otherwise.
| Variables | Sleep Quality | p Value | |
|---|---|---|---|
| Good (PSQI Score ≤ 5) |
Poor (PSQI Score > 5) | ||
| No. of patients | 317 | 352 | |
| Mean (SD) age at diagnosis (years) | 53.61 ± 9.60 | 53.78 ± 9.72 | 0.82 |
| Mean (SD) body mass index (kg/m2) | 23.04 ± 3.54 | 23.41 ± 3.64 | 0.19 |
| Mean (SD) physical activity (MET/hours/week) | 112.09 ± 79.16 | 108.33 ± 79.43 | 0.54 |
| Mean (SD) electronic product use a (hours/week) | 20.99 ± 12.31 | 23.05 ± 14.62 | <0.05 |
| Educational level | 0.57 | ||
| Junior secondary or below | 168 (53.00) | 186 (52.84) | |
| Senior high school/technical secondary school | 63 (19.87) | 80 (22.73) | |
| Junior college/university or above | 86 (27.13) | 86 (24.43) | |
| Family income per month (Yuan) | 0.81 | ||
| <5000 | 194 (61.20) | 208 (59.09) | |
| 5000 to <10,000 | 87 (27.44) | 99 (28.13) | |
| ≥10,000 | 36 (11.36) | 45 (12.78) | |
| Parity | 0.22 | ||
| ≤1 | 236 (74.45) | 247 (70.17) | |
| ≥2 | 81 (25.55) | 105 (29.83) | |
| Menopausal status (yes) | 220 (69.40) | 259 (73.58) | 0.23 |
| Cigarette smoking (yes) | 27 (8.52) | 38 (10.80) | 0.32 |
| Alcohol drinking (yes) | 52 (16.40) | 87 (24.72) | <0.05 |
| Tea drinking (yes) | 108 (34.07) | 107 (30.40) | 0.31 |
| Rotating night shift work (yes) | 21 (6.62) | 33 (9.38) | 0.19 |
| Taking a nap during the day (yes) | 184 (58.04) | 227 (64.49) | 0.09 |
| Mean (SD) night bedtime (hour in 24 h format) | 21.49 ± 1.43 | 21.62 ± 2.12 | 0.37 |
| Mean (SD) wake-up time (hour in 24 h format) | 5.97 ± 0.92 | 5.88 ± 1.29 | 0.26 |
| Mean (SD) night sleep duration (hours/day) | 7.67 ± 0.86 | 6.11 ± 1.14 | <0.05 |
| Mean (SD) daytime napping duration b (minutes/day) | 44.48 ± 23.66 | 45.24 ± 24.27 | 0.75 |
| Mean (SD) total sleep duration (hours/day) | 8.10 ± 0.99 | 6.59 ± 1.29 | <0.05 |
MET, metabolic equivalent; PSQI, Pittsburgh sleep quality index; SD, standard deviation. a Electronic products included television, computer, mobile phone, iPad, and so on. b Daytime napping duration among participants who took a nap during the day.