Table 1.
Demographic characteristics and baseline values for sleep variables
| Characteristic |
Elderly |
Elderly |
Nonelderly |
Nonelderly |
||||
|---|---|---|---|---|---|---|---|---|
|
1 mg |
2 mg |
2 mg |
3 mg |
|||||
|
Witha |
Withoutb |
Witha |
Withoutb |
Witha |
Withoutb |
Witha |
Withoutb |
|
| (n = 38) | (n = 42) | (n = 42) | (n = 41) | (n = 43) | (n = 41) | (n = 37) | (n = 40) | |
| Age, y, mean (SD) |
71.5 (5.0) |
69.5 (3.9) |
70.3 (5.1) |
71.0 (4.4) |
37.3 (10.7) |
43.0 (10.1) |
37.6 (9.1) |
45.9 (12.2) |
| Sex, n (%) | ||||||||
| Male |
20 (52.6) |
15 (35.7) |
20 (47.6) |
14 (34.1) |
11 (25.6)* |
18 (43.9) |
22 (59.5) |
19 (47.5) |
| Female |
18 (47.4) |
27 (64.3) |
22 (52.4) |
27 (65.9) |
32 (74.4)* |
23 (56.1) |
15 (40.5) |
21 (52.5) |
| Body mass index, kg/m2, mean (SD) |
22.8 (3.4) |
23.1 (3.1) |
23.1 (3.3) |
23.5 (3.3) |
22.6 (4.2) |
24.0 (4.2) |
23.3 (4.0)† |
22.5 (3.2) |
| Sleep latency, min | ||||||||
| Mean (SD) |
63.3 (44.0) |
67.4 (37.4) |
71.8 (49.6) |
69.7 (45.1) |
78.5 (62.8) |
64.8 (41.3) |
65.7 (46.0) |
62.4 (38.9) |
| Median |
60.0 |
60.0 |
60.0 |
60.0 |
60.0 |
60.0 |
60.0 |
55.0 |
| Total sleep time, min | ||||||||
| Mean (SD) |
317.6 (77.1) |
311.1 (70.4) |
310.2 (67.2) |
305.6 (52.4) |
296.5 (46.8)‡ |
284.7 (40.6)† |
315.3 (60.5) |
301.6 (54.9) |
| Median |
330.0 |
310.0 |
330.0 |
300.0 |
300.0 |
290.0 |
330.0 |
300.0 |
| Wake time after sleep onset, min | ||||||||
| Mean (SD) |
66.7 (56.9) |
57.1 (48.1) |
65.6 (63.0) |
72.1 (63.6) |
51.7 (41.5) |
54.9 (42.6) |
40.8 (40.5) |
43.8 (41.6) |
| Median | 60.0 | 40.0 | 35.0 | 50.0 | 40.0 | 60.0 | 30.0 | 33.8 |
a Insomnia with comorbid psychiatric disorders.
b Insomnia without comorbid psychiatric disorders.
*P < 0.01 vs nonelderly patients with psychiatric disorders receiving 3 mg eszopiclone.
†P < 0.05 vs nonelderly patients without psychiatric disorders receiving 3 mg eszopiclone.
‡P < 0.05 vs nonelderly patients with psychiatric disorders receiving 3 mg eszopiclone.
SD = standard deviation.