Patients with schizophrenia showed improvements in Positive and Negative Syndrome Scale (PANSS) scores, Clinical Global Impression Severity (CGI-S) scores, and Personal and Social Functioning (PSP) scores during the 17-week open-label phase with once-monthly paliperidone palmitate (PP1M) treatment. |
Patients who had a lower CGI-S score at baseline were more likely to achieve disease stabilization upon transitioning to PP3M. |
Significant reductions in PANSS and CGI-S scores at week 13 were also predictors of successful transition and disease stabilization in patients switching to PP3M. |
1 Introduction
1.1 Schizophrenia
1.2 LAI Antipsychotics
1.3 Considerations for Transition from PP1M to PP3M
2 Methods
2.1 Patients
2.2 Study Design
2.3 Study Outcomes
2.4 Statistical Analysis
3 Results
3.1 Demographic and Baseline Characteristics
Characteristics | Overall (n = 296) | Non-Stabilized group (n = 86) | Stabilized group (n = 210) | p value |
---|---|---|---|---|
Age, years [mean (SD)] | 32.21 (10.61) | 32.78 (10.57) | 31.97 (10.65) | 0.553 |
Sex, n (%) | 0.157 | |||
Female | 167 (56.4) | 54 (62.8) | 113 (53.8) | |
Male | 129 (43.6) | 32 (37.2) | 97 (46.2) | |
Total PANSS [mean (SD)] | 87.13 (12.03) | 90.05 (12.27) | 85.93 (11.76) | 0.007 |
CGI [mean (SD)] | 4.75 (0.69) | 4.97 (0.69) | 4.66 (0.67) | 0.001 |
Total PSP Score [mean (SD)] | 51.53 (13.4) | 48.57 (12.5) | 52.74 (13.6) | 0.015 |
Took antipsychotics before enrollment [n (%)] | 0.518 | |||
No | 80 (27.0) | 21 (24.4) | 59 (28.1) | |
Yes | 216 (73.0) | 65 (75.6) | 151 (71.9) | |
Number of antipsychotics drug categories taken before enrollment [mean (SD)] | 1.29 (1.34) | 1.43 (1.62) | 1.24 (1.20) | 0.262 |
Categories of antipsychotics drug taken before enrollment [n (%)] | 0.622 | |||
0 | 80 (27) | 21 (24.4) | 59 (28.1) | |
1 | 121 (40.9) | 34 (39.5) | 87 (41.4) | |
≥ 2 | 95 (32.1) | 31 (36.0) | 64 (30.5) | |
Took clozapine before enrollment [n (%)] | 0.587 | |||
Yes | 5 (1.7) | 2 (2.3) | 3 (1.4) | |
No | 291 (98.3) | 84 (97.7) | 207 (98.6) |
3.2 Assessment of Clinical Outcomes
3.3 Factors Associated with Stabilization Allowing for Successful Transition
Factor in logistic regression model | Multivariate analysis1 (backward elimination method) | |
---|---|---|
OR (95% CI) | p value | |
CGI-S at baseline | 0.22 (0.09, 0.51) | < 0.001 |
PANSS reduction at week 13 LOCF2 | 1.11 (1.06, 1.17) | < 0.001 |
CGI-S reduction at week 13 LOCF3 | 2.27 (1.03, 5.02) | 0.043 |