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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

CharacteristicsControlsBD IBD IIMDD
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