Skip to main content

Table 1 Comparison of baseline demographics and clinical characteristics of the study patients.

From: Cost of antipsychotic polypharmacy in the treatment of schizophrenia

Variables OLZ
(N = 405)
RIS
(N = 276)
QUE
(N = 115)
p-value
Age at Baseline 41.8(10.5) 40.4(12.1) 39.62(10.9) 0.0826
Age of Illness Onset 19.5(8.3) 20.0(9.2) 21.0(9.9) 0.2516
Gender (% Male) 61.7%(n = 250) 54.7%(n = 151) 47.8%(n = 55) 0.0165
Race (%)     0.2584
White 46.7%(n = 189) 45.3%(n = 125) 53.9%(n = 62)  
Black 41.2%(n = 167) 36.6%(n = 101) 33.9%(n = 39)  
Hispanic 8.9%(n = 36) 13.8%(n = 38) 8.7%(n = 10)  
Others 3.2%(n = 13) 4.4%(n = 12) 3.5%(n = 4)  
Insurance (%)     0.5837
Medicaid/Medicare 83.0%(n = 327) 80.2%(n = 218) 83.9%(n = 94)  
Champus/VA 6.8%(n = 27) 5.2%(n = 14) 2.7%(n = 3)  
Private/HMO 2.3%(n = 9) 4.0%(n = 11) 2.7%(n = 3)  
Other Insurance 1.0%(n = 4) 1.5%(n = 4) 1.8%(n = 2)  
No Insurance 6.8%(n = 27) 9.2%(n = 25) 8.9%(n = 10)  
Marriage Status (% single) 63.0%(n = 254) 57.8%(n = 129) 61.7%(n = 71) 0.3885
Education (% High School or Less) 71.6%(n = 287) 63.9%(n = 175) 67.3%(n = 76) 0.1046
Comorbidity     
   Diagnosis of Substance use (%) 30.9%(n = 125) 29.4%(n = 81) 19.1%(n = 22) 0.0467
   Diagnosis of Mental Retardation (%) 7.6%(n = 31) 6.2%(n = 17) 8.7%(n = 10) 0.626
   Diagnosis of Personality (%) 18.3%(n = 74) 13.0%(n = 36) 20.9%(n = 24) 0.0925
   Diagnosis of Borderline (%) 2.7%(n = 11) 2.9%(n = 8) 5.2%(n = 6) 0.3827
   Diagnosis of Mental Retardation or Borderline (%) 10.4%(n = 42) 8.3%(n = 23) 13.0%(n = 15) 0.3529
Schizoaffective disorder diagnosis at enrollment (%) 39.6%(n = 132) 33.3%(n = 92) 40%(n = 46) 0.3239
Hospitalization Status on Initiation day (%) 12.8%(n = 52) 22.1%(n = 61) 13.9%(n = 16) 0.0043
MADRS Score at Enrollment 15.6(10.3) 15.5(11.4) 16.3(11.4) 0.8006
PANSS Total at Enrollment 73.2(18.4) 72.9(18.9) 73.6(17.74) 0.9451
Total days on index drug post 1 year after initiation 280(121) 260(134) 239(136) 0.0048
Total days CONTINUOUSLY on index drug post 1-year after initiation 272(129) 250(1431) 225(147) 0.0023