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. Author manuscript; available in PMC: 2011 Mar 28.
Published in final edited form as: Arch Gen Psychiatry. 2008 Jan;65(1):28–37. doi: 10.1001/archgenpsychiatry.2007.3

Table 3.

Multivariate Proportional Hazards Regression Results Within Domains of Predictor Variables

Predictor Domain Individual Predictor Variablesa No. of Patients χ2 Test P Value
Demographics Baseline year 291 9.32 .002
Genetic risk Psychosis in first-degree relatives with functional decline 291 10.37 .001
Positive symptoms Unusual thought content 291 7.10 .008
Suspicion/paranoia 291 7.97 .005
Disorganized communication 291 10.97 <.001
Negative symptoms Social anhedonia 287 3.24 .07
Reduced ideational richness 285 12.21 <.001
Disorganization symptoms Bizarre thinking 287 8.51 .004
Difficulties with concentration 286 3.36 .07
General symptoms Reduced tolerance to stress 286 7.92 .005
Functioning Social function at baseline 290 8.63 .003
General function at baseline 281 5.51 .02
Decline in role functioning in past year 290 3.51 .06
Decline in social, role, or psychological functioning in past year 290 4.81 .03
Drug abuse Any drug abuse 270 4.99 .03
Antipsychotic drugs Antipsychotic drugs during follow-up 287 3.71 .05
a

No variables in the 7 diagnostic comorbidities domain (Table 2) contributed significantly to psychosis risk.