Background
Methods
Subjects
Diagnostic assessment and data collection
Statistical analyses
Results
Bipolar sample
Postpartum (N = 22) | Non-postpartum (N = 101) | Statistical Analyses | ||
---|---|---|---|---|
Age (years)
| 44.4 ± 12.4 | 41.7 ± 13.7 | t = 0.89 | p = 0.372 |
Marital status (Single/Married)
1
| 1/21 | 36/60 | X2 = 9.0 | p = 0.002* |
Education (years)
| 9.5 ± 3.0 | 10.4 ± 4.3 | t = 1.16 | p = 0.251 |
Workers for pay (Yes/No)
2
| 9/13 | 56/39 | X2 = 2.3 | p = 0.125 |
Personality disorders (Yes/No)
3
| 9/4 | 43/28 | X2 = 0.3 | p = 0.554 |
Age of onset (years)
| 27.2 ± 6.5 | 27.6 ± 7.5 | t = 0.25 | p = 0.800 |
Polarity at onset (excited/depressive)
| 5/17 | 35/66 | X2 = 1.2 | p = 0.279 |
Length of illness (years)
| 17.2 ± 11.2 | 13.9 ± 11.5 | t = 1.22 | p = 0.225 |
Familiarity (0 to 3)
| 1.00 ± 0.56 | 1.10 ± 0.85 | t = 0.38 | p = 0.379 |
Psychotic symptoms (Yes/No)
| 14/8 | 82/19 | X2 = 3.2 | p = 0.071 |
Maintenance (0 to 2)
| 0.95 ± 0.94 | 1.33 ± 0.91 | t = 1.73 | p = 0.086 |
Any polarity episodes (total number)
| 6.00 ± 3.6 | 5.96 ± 3.4 | t = 0.05 | p = 0.961 |
Any polarity episodes (number/year)
| 0.50 ± 0.34 | 0.81 ± 0.80 | t = 2.85 | p = 0.005* |
Excited episodes (number/year)
| 0.21 ± 0.26 | 0.42 ± 0.45 | t = 2.89 | p = 0.005* |
Depressive episodes (number/year)
| 0.29 ± 0.21 | 0.39 ± 0.51 | t = 1.48 | p = 0.141 |
Major depressive sample
Postpartum (N = 33) | Non-postpartum (N = 117) | Statistical Analyses | ||
---|---|---|---|---|
Age (years)
| 50.8 ± 13.0 | 48.0 ± 13.1 | t = 0.58 | p = 0.565 |
Marital status (Single/Married)
1
| 0/33 | 24/89 | X2 = 8.4 | p = 0.004* |
Education (years)
| 8.6 ± 3.6 | 9.9 ± 4.2 | t = 1.57 | p = 0.119 |
Workers for pay (Yes/No)
2
| 13/20 | 57/55 | X2 = 1.3 | p = 0.245 |
Personality disorders (Yes/No)
3
| 7/15 | 44/30 | X2 = 5.2 | p = 0.023* |
Age of onset (years)
| 30.1 ± 6.6 | 29.9 ± 7.9 | t = 0.14 | p = 0.887 |
Length of illness (years)
| 20.7 ± 11.9 | 18.1 ± 13.5 | t = 1.02 | p = 0.308 |
Familiarity (0 to 3)
| 1.03 ± 0.5 | 1.00 ± 0.6 | t = 0.27 | p = 0.786 |
Psychotic symptoms (Yes/No)
| 11/22 | 34/83 | X2 = 0.3 | p = 0.562 |
Maintenance (0 to 2)
| 0.36 ± 0.7 | 0.85 ± 0.9 | t = 3.15 | p = 0.002* |
Depressive episodes (total number)
| 3.06 ± 2.4 | 3.74 ± 3.5 | t = 1.06 | p = 0.291 |
Depressive episodes (number/year)
| 0.26 ± 0.3 | 0.41 ± 0.4 | t = 2.45 | p = 0.016* |