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Table 1 Demographic and grouping information of healthy volunteers (Controls), patients with bipolar I (BD I), II (BD II) and major depressive (MDD) disorders

From: Symptom continuum reported by affective disorder patients through a structure-validated questionnaire

Characteristics

Controls

BD I

BD II

MDD

Study 1

Participant part 1 (for EFA)

  Sample size (female)

352 (184)

111 (60)

130 (73)

108 (78)

  Age (in years; mean ± SD; range)

26.27 ± 3.95 (19–42)

25.58 ± 5.75 (18–53)

27.93 ± 7.88 (18–60)

26.94 ± 8.91 (18–49)

Participant part 2 (for CFA)

  Sample size (female)

386 (251)

96 (50)

135 (77)

84 (49)

  Age (in years; mean ± SD; range)

26.00 ± 2.75 (19–53)

26.31 ± 6.48 (18–51)

25.98 ± 8.39 (18–57)

27.15 ± 7.96 (18–53)

Study 2

 Sample size (female)

738 (435)

207 (110)

265 (150)

192 (127)

 Age (in years; mean ± SD; range)

26.13 ± 3.39 (19–53)

25.94 ± 6.10 (18–53)

26.96 ± 8.18 (18–60)

27.03 ± 8.50 (18–53)

  1. Note: Same participants were used in both Study 1 and Study 2, for detailed description, see text
  2. EFA exploratory factor analysis, CFA confirmatory factor analysis