BMC Psychiatry

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
Adherence	182-121 Days		121-61 Days		60-0 Days		Overall 6 Months
PDC^c
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
Adherence	0-60 Days		61-120 Days		121-180 Days		Overall 6 Months
PDC^c
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

PDC proportion of days covered, SD standard deviation.
^aAdherence measured during the 6-month period before the index inpatient admission and the 6-month period after the index discharge date.
^bAntipsychotic therapy included first- and second-generation antipsychotic medications.
^cPDC = total days of drug availability ÷ (days in study period – days hospitalized).

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