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. 2018 Sep 26;45(4):784–793. doi: 10.1093/schbul/sby136

Table 3.

Main ANCOVA Results for All Outcome Measures by Treatment Group (Intention to Treat)

Baseline Posttreatment F Test Between-group effect size (d)
MCT-JTC AC MCT-JTC AC Group Effect (F)
Mean (SD) Mean (SD) Mean (SD) Mean (SD)
MacCAT-T understanding 3.62 (1.40) 3.30 (1.46) 4.30 (1.49) 3.59 (1.57) 2.06 .49
MacCAT-T appreciation 3.21 (1.08) 2.90 (1.28) 3.86 (0.58) 3.00 (1.35) 6.45* .87*
MacCAT-T reasoning 6.2 (1.23) 5.44 (1.89) 6.89 (1.24) 5.56 (2.00) 3.95** .68**
MacCAT-T expressing choice 1.95 (0.23) 1.89 (0.32) 1.95 (0.23) 1.93 (0.24) b b
MacCAT-T total 14.93 (3.37) 13.58 (4.17) 16.8 (2.83) 13.9 (4.37) 7.78* .96*
HADS anxiety 9.21 (5.39) 7.22 (4.13) 9.16 (4.71) 7.52 (4.55) 2.21 −.18
HADS depression 6.16 (4.14) 3.39 (2.68) 7.32 (3.60)a 3.44 (2.39)a b .30
HADS total 15.38 (8.17) 11.11 (5.40) 16.26 (7.18) 10.99 (5.87) 2.21 −.51
CBQP JTC subscale 11.21 (3.87) 10.56 (2.20) 10.67 (3.05) 10.60 (1.57) .33 .20
CBQP Total 48.89 (11.10) 45.44 (9.83) 45.40 (9.42) 43.54 (8.39) .35 .20
Beads task 3.84 (2.91) 3.67 (2.68) 6.16 (4.05) 3.72 (3.36) 7.35* .93*

Note: MCT, metacognitive training; AC, attention control; MacCAT-T, MacArthur Competency Assessment Tool for Treatment; HADS, Hospital Anxiety and Depression Scale; CBQP, Cognitive Biases Questionnaire for Psychosis: JTC, jumping-to-conclusions.

aMean change for MCT-JTC and control was 1.16 (SD 3.17) and 0.05 (SD 3.09), respectively.

bData violated necessary assumptions therefore ANCOVA was not possible. Between group difference for MacCAT-T Expressing Choice was nonsignificant.

*P < .05; **P < .1.