Table 1.
Demographic Characteristics and Lifetime Axis I Psychiatric Disorders of Parents With Bipolar Disorder vs Community Control Parents
| Characteristic | Parents With Bipolar Disorder (n=233) |
Community Control Parents (n=143) |
Statistic |
P Value (Effect Size) |
|---|---|---|---|---|
| Demographic | ||||
| Age, mean (SD), y | 39.5 (7.6) | 40.9 (7.4) | t=1.82 | .07 (0.19) |
| Female, % | 80.3 | 77.6 | χ2=0.37 | .50 (0.05) |
| White, % | 88.4 | 75.5 | χ2=10.69 | .001 (0.32) |
| SES, mean(SD)a | 2.9 (1.2) | 3.2 (1.1) | t=2.10 | .04 (0.26) |
| Married at intake, % | 48.5 | 65.7 | χ2=10.64 | .001 (0.37) |
| No. of offspring included, mean (SD) | 1.7 (0.8) | 1.8 (0.8) | t=1.03 | .30 (0.13) |
| Lifetime Axis I psychiatric disorders, % | ||||
| Any Axis I disorders | 100.0 | 54.5 | χ2=128.04 | <.001 (1.50) |
| BP-I | 67.8 | 0.0 | NA | NA |
| BP-II | 32.2 | 0.0 | NA | NA |
| Unipolar MDD | NA | 25.2 | NA | NA |
| Dysthymic disorder | 2.6 | 5.6 | χ2=2.25 | .10(0.15) |
| Any anxiety disorders | 72.5 | 20.3 | χ2=97.05 | <.001 (1.10) |
| Panic disorder | 39.9 | 4.9 | χ2=55.66 | <.001 (0.92) |
| DBDsb | 36.9 | 8.4 | χ2=37.40 | <.001 (0.73) |
| ADHD | 27.5 | 2.8 | χ2=36.41 | <.001 (0.77) |
| Any substance abusec | 63.9 | 28.0 | χ2=45.88 | <.001 (0.72) |
Abbreviations: ADHD, attention-deficit/hyperactivity disorder; BP, bipolar disorder; DBDs, disruptive behavior disorders; MDD, major depressive disorder: NA, not applicable; SES, socioeconomic status.
a
A value of 3 is equivalent to an SES of III, middle class, on the Hollingshead scale.
b
Includes oppositional defiant disorder and conduct disorder.
c
Includes alcohol, marijuana, and cocaine.