Table 3.
Comparison of SIDP and SPQ scores in high and low schizotypy controls and SPD
| LO (n = 57) | HI (n = 59) | SPD (n = 250) | Statistics (Welch’s F test) | Post hoc (G-H test) | |
|---|---|---|---|---|---|
| SIDP Total | 0.32 (0.74) | 3.75 (0.58) | 6.97 (1.39) | F(2, 152.67) = 1277.03, p < 0.001 | LO < HI < SPD |
| SPQ Total | 7.11 (8.37) | 35.49 (14.68) | 34.63 (15.23) | F(2, 126.21) = 193.87, p < 0.001 | LO < HI = SPD |
| Ideas of Reference | 0.63 (108) | 4.46 (2.62) | 4.48 (2.72) | F(2, 136.17) = 167.00, p < 0.001 | LO < HI = SPD |
| Magical Thinking | 0.30 (0.65) | 2.41 (1.76) | 2.53 (2.03) | F(2, 141.43) = 120.31, p < 0.001 | LO < HI = SPD |
| Unusual Perceptual Experience | 0.28 (0.65) | 2.78 (2.28) | 2.67 (2.34) | F(2, 139.45) = 116.04, p < 0.001 | LO < HI = SPD |
| Odd Speech | 0.96 (1.61) | 4.31 (2.92) | 4.22 (2.73) | F(2, 121.13) = 75.53, p < 0.001 | LO < HI = SPD |
| Suspiciousness | 0.84 (142) | 4.42 (2.51) | 4.34 (2.50) | F(2, 123.86) = 109.82, p < 0.001 | LO < HI = SPD |
| Limited Affect | 0.81 (1.38) | 3.49 (2.26) | 3.54 (2.20) | F(2, 119.81) = 75.01, p < 0.001 | LO < HI = SPD |
| Odd Behavior | 0.72 (128) | 3.34 (2.26) | 3.40 (2.26) | F(2, 124.39) = 78.38, p < 0.001 | LO < HI = SPD |
| Lack Close Friends | 1.05 (2.00) | 4.88 (2.43) | 4.90 (2.65) | F(2, 116.03) = 80.08, p < 0.001 | LO < HI = SPD |
| Social Anxiety | 1.51 (2.08) | 5.41 (2.45) | 4.56 (2.74) | F(2, 116.41) = 55.45, p < 0.001 | LO < HI = SPD |
| SPQ ≥ 41, % | 1.8 | 39.0 | 34.4 | X2(2) = 26.20, p < 0.001 | LO < HI = SPD |
LO = low schizotypy control group; HI = high schizotypy control group; SPD = schizotypal personality disorder; SIDP = Structured Interview for DSM-IV Personality; SPQ = Schizotypal Personality Questionnaire; G-H = Games-Howell