Table 1 Characteristics of the study cohort.

From: Markers of positive affect and brain state synchrony discriminate melancholic from non-melancholic depression using naturalistic stimuli

Characteristics

Total (n = 70)

Melancholic (n = 30)

Non-melancholic (n = 40)

Sex (percent)

 Male

28 (40.0)

14 (46.7)

14 (35.0)

 Female

42 (60.0)

16 (53.3)

26 (65.0)

Age in years (mean (SD), median (range))

44.0 (±12.8), 46 (24–65)

44.7 (±13.3), 46 (24–65)

43.4 (±12.5), 45 (24–65)

Body mass index (mean (SD), median (range))

28.5 (±6.2), 28 (18–46)

29.0 (±6.5), 28 (18–44)

28.1 (±6.0), 28 (19–46)

Age depression onset (mean (SD), median (range))

18.6 (±9.9), 16 (5–48)

19.9 (±10.3), 17 (5–46)

17.5 (±9.7), 16 (5–48)

Antidepressant trials (mean (SD), median (range))

4.8 (±3.2), 4 (0–13)

5.6 (±3.3), 6 (0–13)

4.2 (±2.9), 4 (1–12)

MADRS (mean (SD), median (range))

25.3 (±10.1), 25 (6–44)

29.6 (±10.1), 34 (8–44)

22.0 (±8.9), 23 (6–42)*

MADRS sleep (mean (SD), median (range))

2.7 (±1.7), 3 (0–6)

3.3 (±1.6), 4 (0–6)

2.2 (±1.7), 2 (0–5)*

MADRS appetite (mean (SD), median (range))

1.1 (±1.6), 0 (0–5)

1.7 (±1.7), 0 (0–5)

0.7 (±1.3), 0 (0–5)*

MADRS feeling (mean (SD), median (range))

2.8 (±1.6), 3 (0–5)

2.8 (±1.5), 3 (0–5)

1.7 (±1.4), 2 (0–5)*

HAM-A (mean (SD), median (range))

20.1 (±8.6), 20 (4–45)

22.2 (±7.6), 23 (4–39)

18.5 (±8.9), 19 (5–45)

SHAPS (mean (SD), median (range))

5.6 (±4.2), 6 (0–14)

7.4 (±4.0), 8 (0–14)

4.2 (±3.8), 3 (0–13)*

Antidepressant use

55

26

29

Fluoxetine equivalent dose (mg) (mean (SD), median (range))

36.1 (±30.6), 40 (0–118)

41.4 (±31.7), 40 (0–118)

31.9 (±29.4), 22.2(0–95.7)

Antipsychotic use

11

7

4

Risperidone equivalent dose (mg) (mean (SD), median (range))

0.2 (±0.7), 0 (0–5)

0.4 (±1.0), 0 (0–5)

0.1 (±0.4), 0 (0–2)

Mood stabiliser use

3

1

2

Benzodiazepine use

4

2

2

Stimulant use

8

4

4

Education level (percent)

 Primary school

1 (1.4)

1 (3.3)

0 (0)

 Junior high school

7 (10.0)

3 (10.0)

4 (10.0)

 High school

6 (8.6)

4 (13.3)

2 (5.0)

 Diploma

11 (15.7)

8 (26.7)

3 (7.5)

 University degree

28 (40.0)

8 (26.7)

20 (50.0)

 Postgraduate degree

17 (24.3)

6 (20.0)

11 (27.5)

Alcohol use (last 3 months) (percent)

 Never

23 (32.9)

11 (36.6)

12 (30.0)

 Once or twice

11 (15.7)

6 (20.0)

5 (12.5)

 Monthly

7 (10.0)

0 (0)

7 (17.5)

 Weekly

14 (20.0)

7 (23.3)

7 (17.5)

 Daily

15 (21.4)

6 (20.0)

9 (22.5)

Tobacco use (last 3 months) (percent)

 Never

61 (87.1)

28 (93.3)

33 (82.5)

 Once or twice

2 (2.9)

0 (0)

2 (5.0)

 Monthly

0 (0)

0 (0)

0 (0)

 Weekly

0 (0)

0 (0)

0 (0)

 Daily

7 (10.0)

2 (6.6)

5 (12.5)

Employment status (percent)

 Full time

37 (52.9)

15 (50.0)

22 (55.0)

 Part time

9 (12.9)

2 (6.7)

7 (17.5)

 Unemployed

22 (31.4)

12 (40.0)

10 (25.0)

 Retired

2 (2.9)

1 (3.3)

1 (2.5)

Developmental vulnerabilities (percent)

 Attachment disorder

31 (44.3)

11 (36.7)

20 (50.0)

 Physical abuse

14 (20.0)

2 (6.7)

12 (30.0)

 Sexual abuse

16 (22.9)

8 (26.7)

8 (20.0)

 Bullying

25 (35.7)

12 (40.0)

13 (32.5)

 Domestic violence

15 (21.4)

6 (20.0)

9 (22.5)

  1. For all scales, higher scores indicate greater severity of symptoms.
  2. HAM-A Hamilton Anxiety Rating Scale (range 0–56), MADRS Montgomery-Åsberg Depression Rating Scale (range 0–60), SHAPS Snaith-Hamilton Pleasure Scale (range 0–14).
  3. *pFDR  <  0.05.