Mean (SD) of baseline scores for outcome measures by study arm
| Outcome variable | Study group | |
| UBI (total n=85) | PAU (total n=75) | |
| Mean (SD) | Mean (SD) | |
| K10* | 29.5 (6.2) | 28.1 (5.7) |
| HADS—total | 20.6 (5.9) | 19.5 (5.1) |
| HADS—anxiety | 12.1 (3.6) | 11.9 (3.5) |
| HADS—depression | 8.5 (3.5) | 7.7 (3.6) |
| WSAS | 23.0 (8.2) | 19.6 (8.5) |
| Health Thermometer† | 55.4 (19.9) | 58.8 (18.7) |
*One patient in PAU group missing baseline value.
†Higher scores on the Health Thermometer indicate better health.
HADS, Hospital Anxiety and Depression Scale; K10, Kessler-10; PAU, practice as usual; UBI, ultrabrief intervention; WSAS, Work and Social Adjustment Scale.