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Table 1 Characteristics of Patient and Control Samples

From: Habitual prospective memory in schizophrenia

  Patients n = 20 (18 M, 2 F) Controls n = 20 (14 M, 6 F) Group Difference
  M SD M SD  
Age (years) 34.8 7.2 36.6 6.8 t(38) = 0.81, p > .1
WRAT-R IQ 102.7 10.6 105.4 8.9 t(38) = 0.85, p > .1
WAIS-R IQ 87.6 8.2 105.9 10.8 t(38) = 6.04, p < .001
Digit span: Total 13.2 3.4 18.3 4.3 t(38) = 3.81, p < .001
   Digit span: Forward 7.1 1.8 9.2 2.4 t(38) = 3.03, p < .01
   Digit span: Backward 6.1 2.3 9.1 2.5 t(38) = 4.02, p < .001
Neuroleptic medication 19   0   
   clozapine/olanzapine 14   -   
   risperidone 7   -   
   high potency drug* 1   -   
   anticholinergics 1   -   
   adjunctives** 10   -   
  1. * = haloperidol ** = lithium, depakote, sertraline, lorazepam, venlafaxine, clonazepam, buspirone