Table 1.
Demographic and clinical characteristics of participants.
| Total Population (n = 389) | Participants with Poor Sleep Quality a (n = 183) | Participants with Normal Sleep Quality b (n = 206) | |
|---|---|---|---|
| Age at enrolment: | |||
| Mean (SD) | 66.6 (9.1) | 66.3 (9.5) | 66.9 (8.1) |
| min–max | 36–90 | 40–90 | 36–88 |
| Gender n (%): | |||
| Male | 266 (68.4) | 115 (62.8) | 151 (73.3) |
| Female | 123 (31.6) | 68 (37.2) | 55 (26.7) |
| Time since end of treatment at 6 weeks post-treatment: |
|||
| Mean (SD) | 7.95 (3.5) | 7.82 (3.4) | 8.07 (3.6) |
| min–max | 3.3–37.3 | 3.9–37.3 | 3.3–32.3 |
| Cancer location n (%): | |||
| Colon | 247 (63.5) | 110 (60.1) | 137 (66.5) |
| Rectum | 142 (36.5) | 73 (39.9) | 69 (33.6) |
| Cancer Stage n (%): | |||
| I | 123 (31.6) | 55 (30.1) | 68 (33.0) |
| II | 97 (24.9) | 44 (24.0) | 53 (25.7) |
| III | 169 (43.4) | 84 (45.9) | 85 (41.3) |
| Treatment undergone n (%): | |||
| Surgery | 348 (89.5) | 169 (92.4) | 179 (87.0) |
| Chemotherapy | 150 (38.6) | 69 (37.7) | 81 (39.3) |
| Radiotherapy | 98 (25.2) | 51 (27.9) | 47 (22.8) |
| No treatment | 18 (4.6) | 4 (2.2) | 14 (6.8) |
| Anxiety at 6 weeks post-treatment n (%) *: | |||
| Present | 37 (9.5) | 25 (13.7) | 12 (5.8) |
| Absent | 351 (90.2) | 157 (85.9) | 194 (94.2) |
| Depression at 6 weeks post-treatment n (%) *: | |||
| Present | 53 (13.6) | 37 (20.2) | 16 (7.8) |
| Absent | 335 (86.1) | 145 (79.2) | 190 (92.2) |
a as defined by the answers of “a little”, “often”, and “always” to the single item insomnia question (during the past week, have you had trouble sleeping) in the EORTC questionnaire. b as defined by the answer of “not at all” to the single item insomnia question (during the past week, have you had trouble sleeping) in the EORTC questionnaire. * One person did not provide data on anxiety or depression in the total population (n = 389) and in the population of participants with poor sleep quality (n = 183).