Table 1

First factor analysis: OPCRIT psychotic symptoms (loadings of > 0.50 in bold)

Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Factor 6
Bizarre behaviour 0.36 0.36 0.03 0.06 0.25 0.20
Catatonia 0.10 0.53 -0.16 -0.08 0.39 -0.26
Speech difficult to understand 0.83 0.34 0.00 0.04 0.08 0.02
Positive formal thought disorder 0.81 0.24 0.00 0.00 -0.01 0.14
Negative formal thought disorder 0.06 0.66 0.06 -0.09 0.34 -0.20
Restricted affect 0.12 0.54 0.16 0.37 -0.05 0.07
Inappropriate affect 0.27 0.63 0.17 0.12 0.00 0.18
Persecutory delusions 0.02 0.05 0.06 0.80 0.07 0.04
Grandiose delusions 0.63 -0.35 0.11 0.17 0.21 -0.17
Delusions of influence 0.15 -0.06 0.16 0.62 0.29 0.01
Delusions of passivity 0.15 0.23 0.55 0.09 0.12 0.27
Thought insertion -0.02 -0.03 0.82 0.02 0.15 0.04
Thought broadcast 0.00 0.08 0.77 0.15 -0.06 -0.01
Third-person voices 0.07 -0.04 0.34 -0.08 0.03 0.67
Commentary voices 0.05 -0.03 -0.06 0.15 0.17 0.73
Abusive voices -0.07 0.32 0.02 0.54 -0.04 0.47
Other auditory hallucinations 0.16 0.24 0.10 0.29 0.64 0.10
Other hallucinations 0.04 0.07 0.09 0.09 0.79 0.16
Variance 21.8% 11.0% 7.5% 7.1% 6.6% 5.5%
Title Disorganised Negative First-rank delusions Paranoid Other hallucinations First-rank hallucinations