Table 1 Means, standard deviations, and comparisons of patients and healthy controls regarding sociodemographic and clinical measures
Patients with psychotic disorders (n = 300) n (%)/ M (SD) | Healthy controls (n = 51) n (%)/ M (SD) | Test Statistics | |
|---|---|---|---|
Sociodemographics | |||
Gender (female) | 117 (39%) | 21 (41%) | χ2(1) = .097, p = .755 |
Age (y) | 37.94 (9.68) | 35.65 (9.30) | t(349) = 1.57, p = .117 |
Verbal IQ | 106.16 (15.08) | 114.88 (15.37) | t(337) = 3.734, p < .001 |
Duration of illness (y) | 15.01 (9.05) | ||
PANSS | |||
PANSS total | 64.80 (11.38) | ||
PANSS POS | 17.44 (3.58) | ||
PANSS NEG | 14.28 (4.34) | ||
PANSS GEN | 33.16 (7.07) | ||
PANSS positive factor | 11.65 (2.72) | ||
PANSS P01 | 4.37 (1.11) | ||
PANSS P06 | 3.48 (1.48) | ||
PSYRATS | |||
PSYRATS DS | 2.42 (0.76) | ||
PSYRATS AHS | 2.03 (1.00) | ||
PSYRATS Delusional conviction | 2.57 (1.22) | ||
JTC measures | |||
JTC-bias present | 160 (53%) | 21 (41%) | χ2(1) = 2.724, p = .099 |
Draws to decision (DTD) | 3.10 (2.70) | 3.49 (2.48) | t(349) = .973, p = .331 |
Decision threshold | 62.06 (29.02) | 67.66 (28.58) | t(333) = 1.26, p = .209 |
Subjective probability for Pond A – Draw 1 | 66.60 (23.18) | 67.18 (21.79) | t(349) = .167, p = .868 |
Subjective probability for Pond A – Draw 2 | 71.30 (19.39) | 72.82 (17.87) | t(349) = .523, p = .601 |