Table 1.
Demographic and clinical characteristics of the bipolar I disorder sample (n = 72)
| High risk (n = 39) | Low risk (n = 33) | F | df | p-value | |
|---|---|---|---|---|---|
| BMI | 36.80 (7.69) | 32.50 (6.56) | 0.434 | 70 | 0.014 |
| Age | 45.30 (7.95) | 43.80 (8.37) | 0.228 | 61 | 0.477 |
| Waist (inches) | 42.80 (6.20) | 39.10 (5.60) | 0.586 | 56 | 0.027 |
| Duration of illness | 26.10 (11.17) | 23.80 (8.80) | 1.695 | 70 | 0.343 |
| HAM-D score | 13.10 (9.20) | 6.30 (5.10) | 12.390 | 70 | 0.000a |
| HAM-D minus sleep items | 9.82 (7.19) | 4.30 (3.86) | 11.621 | 70 | 0.000a |
| YMRS score | 3.10 (3.00) | 1.50 (2.30) | 3.041 | 70 | 0.022 |
| YMRS minus sleep items | 2.79 (2.80) | 1.36 (2.07) | 2.568 | 70 | 0.018 |
| HAM-D at baseline | 7.59 (2.81) | 5.73 (4.27) | 1.916 | 70 | 0.037 |
| YMRS at baseline | 1.95 (2.22) | 1.27 (2.00) | 0.542 | 70 | 0.179 |
| PSQI | 6.87 (3.55) | 5.39 (3.81) | 0.073 | 64 | 0.111 |
| MOOD-SR | 97.20 (27.5) | 85.76 (37.7) | 4.195 | 66 | 0.150 |
| Male / female, n | 12 / 26 | 18 / 16 | 4.157b | 1 | 0.056 |
| Employment status, n (%) | |||||
| Full time | 5 (12.8) | 13 (39.3) | 13.211b | 5 | 0.021 |
| Part time | 8 (20.5) | 6 (18.1) | |||
| Home maker | 3 (7.6) | 0 (0) | |||
| Leave of absence | 1 (2.5) | 0 (0) | |||
| Unemployed | 8 (20.5) | 10 (30.3) | |||
| Disabled | 14 (35.8) | 4 (12.1) | |||
Values are reported as mean [standard deviation (SD)]. BMI = body mass index; HAM-D = Hamilton Rating Scale for Depression; MOOD-SR = MOOD questionnaire self rating version; PSQI = Pittsburgh Sleep Quality Index; YMRS = Young Mania Rating Scale.
a
Remains significant (p = 0.0001 × 14 = 0.0014) after Bonferroni adjustment for 14 comparisons.
b
Pearson’s chi-square value.