Table 2.
BC-CCI and PHQ-9 Scores
| All Participants (N=75) | Participants With LSTa (n=37) | Participants Without LSTa (n=38) | |
|---|---|---|---|
| BC-CCI total score | |||
| Mean (SD) | 10.8 (4.8) | 11.6 (4.9) | 10.1 (4.6) |
| Median | 12.0 | 13.0 | 10.5 |
| Min, Max | 2, 18 | 2, 18 | 2, 18 |
| BC-CCI score categories, n (%) | |||
| Broadly normal cognition (0–4) | 11 (14.7) | 5 (13.5) | 6 (15.8) |
| Mild cognitive complaints (5–8) | 17 (22.7) | 7 (18.9) | 10 (26.3) |
| Moderate cognitive complaints (9–14) | 27 (36.0) | 12 (32.4) | 15 (39.5) |
| Severe cognitive complaints (15–18) | 20 (26.7) | 13 (35.1) | 7 (18.4) |
| PHQ-9 total score | |||
| Mean (SD) | 12.3 (5.4) | 14.1 (5.2) | 10.6 (5.1) |
| Median | 12.0 | 14.0 | 10.0 |
| Min, Max | 2, 26 | 5, 26 | 2, 25 |
| PHQ-9 score categories (severity of depressive symptoms), n (%) | |||
| Minimal (<5) | 2 (2.7) | 0 (0.0) | 2 (5.3) |
| Mild (5–9) | 23 (30.7) | 8 (21.6) | 15 (39.5) |
| Moderate (10–14) | 24 (32.0) | 11 (29.7) | 13 (34.2) |
| Moderately severe (15–19) | 19 (25.3) | 13 (35.1) | 6 (15.8) |
| Severe (20–27) | 7 (9.3) | 5 (13.5) | 2 (5.3) |
Notes: aLong sleep was defined as ≥11 hours of sleep in a 24-hour period (self-reported).
Abbreviations: BC-CCI, British Columbia Cognitive Complaints Inventory; LST, long sleep time; Max, maximum; Min, minimum; PHQ-9, Patient Health Questionnaire-9; SD, standard deviation.