Table 4.
Mean modified Illness Perceptions Questionnaire (M-IPQ) subscale scores at baseline and test–retest, with regression results showing the prediction of clinical outcomes following therapy for each subscale.
| Subscale/item | Total baseline (n = 56) |
Control T1 (n = 15a) |
Control T2 (n = 15a) |
Therapy baseline (n = 40) |
Prediction of outcome (n = 34b) |
|---|---|---|---|---|---|
| Mean (SD) | β (p)c | ||||
| Cure/control+ | 26.1 (6.2) | 25.6 (6.0) | 24.3 (6.2) | 26.1 (6.3) | −0.4 (0.03) |
| Timeline | 10.1 (2.9) | 11.5 (2.3) | 11.6 (2.4) | 9.7 (3.0) | −0.3 (0.1) |
| State of mind | 3.5 (1.3) | 3.9 (1.1) | 3.9 (1.0) | 3.3 (1.4) | 0.2 (0.2) |
| Personality | 3.3 (1.2) | 3.3 (1.1) | 3.4 (1.0) | 3.3 (1.3) | −0.1 (0.4) |
a
One control participant did not complete post measures.
b
Therapy group only, 6 participants with missing data on one or more variables.
c
F(8,26) = 3.3, p = 0.01; r = 0.7, R2 = 0.35; controlling for baseline paranoia and then for other predictors of outcome (baseline conviction, belief inflexibility and distress).