Objective: Regarding the patients using long acting injectable (LAI)
antipsychotic treatment; we aimed to investigate the effect of attitude
towards drugs, antipsychotic type and side effects on quality of life,
caregiver burden and continuation of treatment.
Method: Our study sample consisted of 110 patients in the age range of
18-65 using LAI antipsychotics for at least 12 weeks with the diagnosis
of schizophrenia according to DSM-5 criteria. Sociodemographic and
Clinical Data Form, Drug Attitude Inventory 10 (DAI-10), Positive
and Negative Syndrome Scale (PANSS), UKU Side Effect Rating Scale,
Quality of Life for Schizophrenia Scale were used for evaluation of
patients. Sociodemographic Data Form, Zarit Caregiver Burden Scale
(ZCBS) were used for the caregivers.
Results: It is observed that the patients with positive attitude against
the treatment had longer antipsychotic treatment duration (13.7+9.1
years) compared to patients with negative attitude (7.7 + 6.6 years)
(p<0.001). PANSS total scores of patients who were considering about
treatment discontinuation (44.0+14.3) were higher than the other
patients (38.6+9.0) (p=0.03) and DAI-10 scores of patients who were
considering about treatment discontinuation were lower (1.4+4.9;
5.2+3.4; p<0.001). Duration of illness were also shorter (10.3+9.3 year)
for the patients who were considering about treatment discontinuation
than the other group (15.7 + 9.0 year) (p=0.01). There was no significant
difference in caregiver burden, side effects, quality of life and reasons for
treatment discontinuation between typical and atypical antipsychotics.
According to the regression analysis results, PANSS score (β=0.553,
p<0.001) and male gender (β= 0.225, p=0.003) were positive predictors
of ZCBS scores.
Conclusion: It is observed that the attitude towards drugs and
psychotic symptom severity were the most important factors for
treatment discontinuation in patients with schizophrenia using LAI
antipsychotics. Atypical and typical antipsychotics were not different
with respect to quality of life and caregiver burden for the patients on
regular treatment with LAI antipsychotics.
Keywords: schizophrenia, treatment discontinuation, quality of life,
caregiver burden, long acting injectable antipsychotics