Table 1.
Basic sample characteristics.
| Characteristic | Patients (n=367) | At-risk (n=217) | Controls (n=227) | Test statistic | P value | Significant contrasts | |
| Gender, n |
|
|
|
χ22=7.7 | .02 |
|
|
|
|
Male | 187 | 90 | 93 |
|
|
|
|
|
Female | 180 | 127 | 134 |
|
|
|
| Age, mean (SD) | 38.07 (11.42) | 36.41 (13.12) | 35.50 (12.56) | F2,806=3.4 | .04 | Patients versus controls | |
| Observations per person, mean (SD) | 43.93 (10.07) | 46.07 (9.21) | 47.51 (9.10) | F2,808=10.3 | <.001 | Patients versus controls | |
| Stressful days per person, mean (SD) | 5.92 (0.58) | 5.96 (0.41) | 5.99 (0.48) | F2,808=1.4 | .25 |
|
|
| Time of first stressora, mean | 2:59 PM | 3:07 PM | 2:55 PM | F2,769=0.3 | .72 |
|
|
| Unpleasantness of first stressora, mean (SD) | 2.00 (0.62) | 1.88 (0.63) | 1.91 (0.63) | F2,770=3.1 | .04 | Patients versus at-risk | |
| Positive affect, mean (SD) | 4.27 (0.93) | 4.89 (0.94) | 5.16 (0.71) | F2,808=79.4 | <.001 | At-risk versus controls; patients versus controls; patients versus at-risk | |
aExcluding stressors that were reported at the first prompt of the day.