The Effect of a Motivation Enhancement Program Combined with Family Support on Motivation to Quit Amphetamine in Patients with Amphetamine-Induced Psychosis During the Rehabilitation Phase.

Abstract

      This quasi-experimental study used a two-group pretest-posttest design to examine the effects of a motivational enhancement program combined with family support on motivation to quit amphetamine use, continuity of treatment, and non-readmission within 3 months. The sample comprised 52 male inpatients with amphetamine dependence and psychiatric complications who were undergoing rehabilitation at the Princess Mother National Institute on Drug Abuse Treatment (PMNIDAT). Participants were allocated to an experimental group (n = 26), whose 26 family members also took part in the program, and a control group (n = 26). The experimental group received an eight-activity motivational enhancement program combined with family support, delivered in group sessions over 4 weeks, whereas the control group received usual nursing care. The research instruments comprised 1) the motivational enhancement program combined with family support, 2) the Brief Psychiatric Rating Scale (BPRS), and 3) data collection instruments, namely a demographic questionnaire, a questionnaire on motivation to quit amphetamine use, a 3-month treatment continuity record, and a 3-month non-readmission record. The content validity of all instruments was verified by three experts (CVI = 1.00), and the reliability of the motivation questionnaire was .85. Data were analyzed using descriptive statistics, the chi-square test, Fisher's exact test, the t-test, two-way repeated measures ANOVA, and the Mann-Whitney U test.

      The results showed that the mean motivation scores of the experimental group at 2 weeks post-program and at the 3-month follow-up were significantly higher than those of the control group (p < .001). Treatment continuity within 3 months was higher in the experimental group than in the control group (92.3% vs. 73.1%), although the difference was not statistically significant (p = .070). The 3-month non-readmission rate was significantly higher in the experimental group (100.0% vs. 76.9%, p = .010). These findings suggest that the program can serve as a nursing intervention to enhance motivation to quit and reduce readmission in this patient group.