Table 3.
Results of Kruskal-Wallis H tests
| Dependent variable | n | Mean rank | df | X² | P value | E² |
| CO hours, suicidal ideation | 2 | 2.54 | 0.280 | 0.00 | ||
| TAU | 376 | 604.32 | ||||
| DBT Group 1 | 425 | 590.86 | ||||
| DBT Group 2 | 393 | 598.16 | ||||
| CO hours, self-injury | 2 | 9.80 | 0.007* | 0.01 | ||
| TAU | 376 | 608.92 | ||||
| DBT Group 1 | 425 | 591.98 | ||||
| DBT Group 2 | 393 | 592.54 | ||||
| CO hours, aggression | 2 | 1.63 | 0.444 | 0.00 | ||
| TAU | 376 | 602.00 | ||||
| DBT Group 1 | 425 | 594.26 | ||||
| DBT Group 2 | 393 | 596.70 | ||||
| Incident, suicide attempts | 2 | 7.64 | 0.022* | 0.01 | ||
| TAU | 376 | 603.12 | ||||
| DBT Group 1 | 425 | 592.00 | ||||
| DBT Group 2 | 393 | 598.07 | ||||
| Incident, self-injury | 2 | 54.87 | <0.001† | 0.05 | ||
| TAU | 376 | 582.15 | ||||
| DBT Group 1 | 425 | 563.97 | ||||
| DBT Group 2 | 393 | 648.45 | ||||
| Incident, aggression patient to patient | 2 | 0.63 | 0.732 | 0.00 | ||
| TAU | 376 | 599.63 | ||||
| DBT Group 1 | 425 | 594.48 | ||||
| DBT Group 2 | 393 | 598.73 | ||||
| Incident, aggression patient to staff | 2 | 0.57 | 0.752 | 0.00 | ||
| TAU | 376 | 596.94 | ||||
| DBT Group 1 | 425 | 596.02 | ||||
| DBT Group 2 | 393 | 599.64 | ||||
| Restraints | 2 | 7.07 | 0.029* | 0.01 | ||
| TAU | 376 | 609.50 | ||||
| DBT Group 1 | 425 | 587.19 | ||||
| DBT Group 2 | 393 | 597.16 | ||||
| Seclusions | 2 | 2.81 | 0.246 | 0.00 | ||
| TAU | 376 | 601.52 | ||||
| DBT Group 1 | 425 | 596.23 | ||||
| DBT Group 2 | 393 | 595.03 | ||||
| Days hospitalised | 2 | 33.20 | <0.001† | 0.03 | ||
| TAU | 376 | 600.65 | ||||
| DBT Group 1 | 425 | 529.54 | ||||
| DBT Group 2 | 393 | 667.99 | ||||
| Readmissions | 2 | 4.10 | 0.129 | 0.00 | ||
| TAU | 376 | 610.32 | ||||
| DBT Group 1 | 425 | 591.88 | ||||
| DBT Group 2 | 393 | 591.31 |
*p<0.05.
†p<0.001.
CO, constant observation; DBT, dialectical behaviour therapy; TAU, treatment as usual.