Table 1.
Subject demographics and clinical data
| HC | BD | T-test/Chi-square | |
|---|---|---|---|
| N | 98 | 75 | -- |
|
| |||
| Age, years | 40.1(12) | 42.4(10) | t = −1.37, p = .173 |
|
| |||
| Sex (F/M) | 51/47 | 46/29 | X2 = 1.49, p = .279 |
|
| |||
| Ethnicity | 36 black, | 16 black, | X2 = 5.8, p = .123 |
| 59 white, | 57 white, | ||
| 1 Hispanic/Latino, | 2 other | ||
| 2 other | |||
|
| |||
| Education | 1 junior high, | 10 junior high, | X2 = 17.39, p = .004* |
| 24 high school, | 27 high school, | ||
| 40 some college, | 18 some college, | ||
| 25 bachelors, | 14 bachelors, | ||
| 7 masters, | 4 masters, | ||
| 1 doctoral | 2 doctoral | ||
|
| |||
| WASI IQ | 107(12.7) (n=57) | 102.8(15.9) (n=57) | t = 1.56, p = .122 |
|
| |||
| Digit symbol | 10.1(2.5) (n=44) | 8.5(2.9) (n=58) | t = 3, p = .003* |
|
| |||
| Medicated (Y/N) | -- | 52/23 | -- |
|
| |||
| MADRS | -- | 11.9(10.7) | -- |
|
| |||
| YMRS | -- | 15.6(11.5) | -- |
*
p < .05.
Values are presented as mean (SD). HC = healthy controls; BD = bipolar disorder; WASI = Wechsler Abbreviated Scale of Intelligence; YMRS = Young Mania Rating Scale; MADRS = Montgomery Asberg Depression Rating Scale. Digit symbol values are scaled scores.