Table 3.
Scores on the psychometric scales at baseline and 6-month endpoint of the entire sample (N = 60) and of the sample subdivided according to psychotherapy received [MIT (n = 18) vs. TAU (n = 39)].
| Scales | x̄ | SE | Effect size# | 95% CI | p |
|---|---|---|---|---|---|
| Entire sample | |||||
| GAF BL | 6.22 | 0.119 | −1.273 | From −1.611 to −0.929 | <0.001 |
| GAF 6-mo. | 7.40 | 0.153 | |||
| BPRS BL | 51.65 | 1.892 | 1.633 | From 1.242 to 2.017 | <0.001 |
| BPRS 6-mo. | 33.55 | 1.087 | |||
| CGI-S BL | 3.85 | 0.134 | 0.928 | From 0.622 to 1.229 | <0.001 |
| CGI-S 6 mo. | 2.33 | 0.152 | |||
| MIT vs. TAU | |||||
| GAF BL MIT | 6.11 | 0.179 | 0.210 | From −0.352 to 0.769 | 0.464 |
| GAF BL TAU | 6.31 | 0.161 | |||
| BPRS BL MIT | 54.17 | 2.324 | −0.331 | From −0.892 to 0.234 | 0.250 |
| BPRS BL TAU | 49.41 | 2.557 | |||
| CGI-S BL MIT | 3.61 | 0.216 | 0.323 | From −0.242 to 0.884 | 0.262 |
| CGI-S BL TAU | 3.95 | 0.176 | |||
| GAF 6 mo. MIT | 7.72 | 0.253 | −0.394 | From −0.956 to 0.174 | 0.173 |
| GAF 6 mo. TAU | 7.26 | 0.197 | |||
| BPRS 6 mo. MIT | 29.56 | 0.833 | 0.659 | From 0.077 to 1.232 | 0.025 |
| BPRS 6 mo. TAU | 34.82 | 1.493 | |||
| CGI-S 6 mo. MIT | 1.94 | 0.206 | 0.390 | From −0.178 to 0.953 | 0.177 |
| CGI-S 6 mo. TAU | 2.56 | 0.204 | |||
#Cohen’s d, approximately 0.2 = small, approximately 0.5 = medium, approximately 0.8, or more = large.
BL, baseline; BPRS, Brief Psychiatric Rating Scale total scores; CGI-I, Clinical Global Impressions – Improvement scale; CGI-S, Clinical Global Impressions – Severity scale; GAF, Global Assessment of Functioning; MIT, metacognitive interpersonal therapy; N, number of cases; SE, standard error; TAU, treatment-as-usual; x̄, mean; 6 mo., 6-month endpoint; 95% CI, 95 percent confidence intervals.