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Table 1 Clinical inputs into the model and sources of information

From: Pharmacoeconomic analysis of paliperidone palmitate for treating schizophrenia in Greece

Rate

RIS-LAI

Source

PP-LAI

Source

Probabilities

Adherence

0.823

Olivares [26]

0.872

RIS rate adjusted via Mehnert [27]

Adherent, stable disease

0.763

Calculation [1 - (ER exacerbation rate + hospitalization rate)]

0.803

Calculation [1 - (ER exacerbation rate + hospitalization rate)]

Adherent, exacerbation requiring ER visit

0.071

Ratio of ER vists: hospitalizations Ascher-Svanum [28]

0.059

Ratio of ER vists: hospitalizations Ascher-Svanum [28]

Adherent, hospitalized

0.166

Olivares [29]

0.138

Gopal [14], Hough [13]

Non-adherent, stable

0.140

Kane [30]

0.148

Hough [13]

Non-adherent, exacerbation

0.274

Calculation [1 - (Stable rate + hospitalization rate)]

0.299

Calculation [1 - (Stable rate + hospitalization rate)]

Non-adherent, hospitalized

0.586

Assumption; PP rate adjusted based on calculations by Mehnert & Diels [27]

0.553

Morken [31]

Dosing

Maintenance dose

40.3 mg biweekly

Fleischhacker [15], Kissling [32], Lee [33], Lindenmayer [34], Olivares [29]

69.3 mg monthly

Gopal[14], Fleischhacker [15]

Dose after relapse

50 mg biweekly*

Risperdal Consta® Approved Summary of Product Characteristics [10] maximum dose

84.9 mg monthly

Gopal [35], Pandina [36], Hough [16], Nasrallah [37], Pandina [38]

Dose after discontinuation

50 mg biweekly*

Risperdal Consta® Approved Summary of Product Characteristics [10] maximum dose

150 mg week 1, 100 mg week 2, then 84.9 mg every 4 weeks

Xeplion® Product monograph [12], Hough [13]

Clozapine maintenance after failing both drugs

450 mg daily

Simonsen[23], Wahlbeck [24]

  

Clozapine maximum dose

750 mg daily

Simonsen[23], Wahlbeck [24]

  
  1. ER emergency room, PP-LAI paliperidone palmitate long-acting injection (Xeplion®); RIS-LAI risperidone microspheres long-acting injection (Risperdal Consta®)
  2. *A slightly higher average dose of 58.2 mg biweekly was used in clinical trials in patients with acute eacerbations of schizophrenia by Kane [5], Chue [35], and Eerdekens[36]; however, they used a dose of 75 mg mg in some patients, which is not commercially available and which exceeds the now-recommended maximum.