Skip to main content

Table 1 Demographic, clinical, and polysomnographic data

From: Sex-related differences in sleep slow wave activity in major depressive disorder: a high-density EEG investigation

 

MDD

HC

p

MDD Females

HC Females

p

MDD Males

HC Males

p

(N = 30)

(N = 30)

(N = 19)

(N = 19)

(N = 11)

(N = 11)

Age (years)

26.0 (9.1)

25.4 (8.5)

.793

23.4 (5.6)

23.1 (6.2)

.891

30.6 (12.1)

29.4 (10.7)

.811

HRSD-17

18.6 (2.7)

--

 

19.0 (3.0)

--

 

17.9 (1.6)

--

 

TST (min.)

377.8 (66.3)

412.7 (47.5)

.023

390.5 (54.0)

419.6 (49.8)

.093

356.0 (81.7)

400.8 (42.9)

.122

WASO (min.)

43.3 (30.2)

30.2 (20.7)

.055

38.1 (26.4)

30.7 (20.6)

.345

52.4 (35.4)

29.4 (21.8)

.082

AI (#/hr.)

10.6 (5.6)

7.9 (4.3)

.043

9.4 (5.5)

8.2 (3.8)

.424

12.6 (5.5)

7.4 (5.3)

.036

SE (%)

86.5 (7.9)

89.6 (7.4)

.132

88.7 (7.1)

89.2 (8.6)

.846

82.8 (8.1)

90.1 (4.9)

.018

SOL (min.)

15.5 (16.5)

18.6 (24.3)

.566

11.6 (10.5)

20.6 (28.0)

.199

22.1 (22.7)

15.1 (16.7)

.414

N1 (%)

8.1 (5.3)

7.9 (4.7)

.926

7.5 (5.5)

7.7 (5.0)

.897

9.0 (5.0)

8.3 (4.2)

.724

N2 (%)

57.7 (8.1)

60.4 (6.1)

.151

56.6 (8.6)

60.4 (5.2)

.111

59.5 (7.2)

60.4 (7.8)

.788

N3 (%)

16.8 (9.2)

14.8 (7.1)

.348

20.0 (7.6)

15.9 (6.3)

.075

11.2 (9.3)

13.0 (8.2)

.651

REM (%)

18.1 (6.6)

16.9 (5.0)

.448

15.9 (6.5)

16.0 (5.2)

.923

22.3 (4.8)

18.4 (4.5)

.071

REML (min.)

131.2 (77.4)

122.2 (69.7)

.641

158.1 (78.4)

131.1 (71.2)

.275

80.1 (43.7)

106.7 (67.4)

.302

SWA (μV2/Hz)

22.7 (13.1)

17.3 (6.8)

.054

28.8 (12.4)

19.3 (6.8)

.006

12.1 (5.4)

13.9 (5.3)

.442

  1. MDD, major depressive disorder; HC, healthy control; HRSD-17, Hamilton Rating Scale for Depression (17-item); TST, total sleep time; WASO, wake after sleep onset; AI, arousal index; SE, sleep efficiency (TST/time in bed); SOL, sleep onset latency; N1/2/3, NREM stage 1/2/3 (% of TST); REM, stage REM (% of TST); REML, REM latency (time from sleep onset to first REM sleep epoch); SWA, global slow wave activity (EEG power in 1 – 4.5 Hz range average 185 channels);
  2. Values are displayed as mean (standard deviation).
  3. *2-tailed, independent samples t-tests.