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Table 1 Demographic data of study groups

From: Change of dopamine receptor mRNA expression in lymphocyte of schizophrenic patients

   Control Drug-med pts Drug-free Drug-naïve  
   (N=31) (N=44) pts(N=28) pts(N=15) p-value**
Age*   33.9 ± 9.5 37.3 ± 11.4 35.1 ± 9.1 30.8 ± 7.7 NS***
Sex Male 17 33 6 16 NS***
  Female 14 11 9 15  
Age of symptom onset*   22.5 ± 6.8 26.7 ± 9.2 28.1 ± 7.8 NS***
Duration of illness*   12.7 ± 8.3 7.6 ± 5.2 2.5 ± 3.0 <0.01
TBPRS   36.1 ± 12.9 41.9 ± 25.4 36.9 ± 18.2 NS***
Dose of antipsychotics****   1000.1 ± 130.4 769.6 ± 491.2 614.2 ± 234.7 NS***
Duration of no-medication    10.61 ± 7.01   
(mean months ± SD)      
  1. * :mean ± standard deviation (years) ** :one-way ANOVA test, independent T-test, Chi-square test *** :NS; statistically non-significant **** :chlorpromazine equivalent dose (mg/cay)