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Table 2 Adherence a to antipsychotic b therapy among medicaid-enrolled schizophrenia patients

From: Antipsychotic adherence patterns and health care utilization and costs among patients discharged after a schizophrenia-related hospitalization

Adherence Preindex period
182-121 Days 121-61 Days 60-0 Days Overall 6 Months
PDCc         
  Mean (SD) 0.63 0.39 0.50 0.44 0.46 0.45 0.53 0.39
PDC Categorical (80% Threshold), n (%)         
  Nonadherent total (PDC < 80%) 1,227 48.29 1,483 58.36 1,572 61.87 1,560 61.39
  Adherent total (PDC ≥ 80%) 1,314 51.71 1,058 41.64 969 38.13 981 38.61
Total 2,541 100.00 2,541 100.00 2,541 100.00 2,541 100.00
Adherence Postindex period
0-60 Days 61-120 Days 121-180 Days Overall 6 Months
PDCc         
  Mean (SD) 0.78 0.27 0.63 0.40 0.62 0.42 0.69 0.32
PDC Categorical (80% Threshold), n (%)         
  Nonadherent total (PDC < 80%) 940 36.99 1,204 47.38 1,183 46.56 1,240 48.80
  Adherent total (PDC ≥ 80%) 1,601 63.01 1,337 52.62 1,358 53.44 1,301 51.20
Total 2,541 100.00 2,541 100.00 2,541 100.00 2,541 100.00
  1. PDC proportion of days covered, SD standard deviation.
  2. aAdherence measured during the 6-month period before the index inpatient admission and the 6-month period after the index discharge date.
  3. bAntipsychotic therapy included first- and second-generation antipsychotic medications.
  4. cPDC = total days of drug availability ÷ (days in study period – days hospitalized).