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Predictors of five-year relapse rates of youths with substance abuse who underwent a family-oriented therapy program

Abstract

Background

Substance abuse among young people has become a serious public health problem for years. The risk of relapse among illicit drug use is essential for developing adequate substance reuse prevention policies. The purpose of the current study is to investigate the potential predictor in long-term relapse rates among young patients that underwent a family-based treatment program.

Methods

To perform this study, 103 young patients with substance use (mean age: 16.2 years, 78.6% male) were referred to participate in a 10-week family-based treatment program. At the beginning and at the end of the treatment, the patients were required to fill out the Chinese Craving Beliefs Questionnaire (CCBQ), the Adolescents’ Behavior-problem Scale (ABS), and the Family APGAR. Furthermore, the patients’ caregivers had to fill out the Family APGAR, the 12-item version of the Chinese Health Questionnaire (CHQ), and the Parenting Stress Index (PSI). All patients were followed up for 5 years in order to observe their long-term outcomes regarding substance use relapse.

Results

During the 10-week family-oriented programs, the CCBQ scores, the CHQ scores and the Child-domain of PSI significantly decreased. Better changes in patients’ behavioral problems during the treatment program predicted a lesser likelihood of substance use relapse in the subsequent 5 years. Furthermore, methamphetamine or 3,4-methylenedioxy-methamphetamine use and living in single-parent families were two factors associated with higher relapse rates.

Conclusions

The changes in patients’ behavioral problems during the treatment program may serve as a predictor of substance use relapse over the subsequent 5 years. This study’s findings provide insight about substance use prevention and serve as a reference for policy-making.

Background

Substance abuse among young people has become a serious public health problem for years [1]. In the United States alone, 75.6% of young people under the age of 18 have admitted to use addictive substances (such as cigarettes, alcohol, marijuana and/or cocaine) at least once [2, 3]. Recently, drug abuse among Taiwanese adolescents has also been on the rise [4, 5], with ketamine, ecstasy and methamphetamine being the most popular illicit drugs [6,7,8]. Substance abuse can lead to serious and harmful complications in young people's lives, including physical illnesses, cognitive impairments, and issues with academic and occupational function, which can cause social burdens and even death in some cases [9, 10]. Therefore, understanding the risk of relapse of illicit drugs is critical to developing an appropriate policy for the prevention of substance reuse.

Young people with drug abuse problems are often considered juvenile delinquents and may be sentenced to probation, rehabilitation or detoxification [11]. To solve this problem, the Kaohsiung Junior Family Court in Taiwan and the Kaohsiung Chang Gung Memorial Hospital have been cooperating since 2010 on a specific treatment plan for drug addicts and their caregivers. Court orders stipulate that minors arrested for drug abuse must undergo treatment procedures at the hospital. In this research, the corresponding programs included 10 sessions of weekly psychotherapy courses based on the motivational enhancement principle [12] and 10 sessions of weekly parenting-skill training courses for caregivers [13,14,15]. Detailed information on this family-oriented treatment plan and its effectiveness for young drug addicts and their caregivers has been provided in our previous studies [16, 17].

Our previous research results showed that after treatment, the frequency of substance cravings by the young participants decreased, while the family function, as perceived by the participating caregivers, increased significantly. The improvement in caregiver's perception of family function is positively correlated with the improvement of the caregiver's health status [16]. Moreover, it was also found that family-oriented treatments might be a more effective option to prevent adolescents from relapsing into substance abuse. Compared with individuals who were subject to the standard supervision by the court, those receiving MEP showed higher school attendance rates or better social outcomes in the follow-up period [17]. Despite this, it is still unclear whether the changes in those treated young people can be used to predict their subsequent substance-use relapse.

The young patients who completed the family-oriented treatment program also received long-term follow-up in the justice system, which enables us to determine whether the changes during the treatment program are associated with subsequent substance-use relapse. Therefore, the purpose of the current study is to investigate potential predictors of long-term relapse rates among young patients that have participated in the family-based treatment program.

Methods

Research participants

This research was approved by the Institutional Review Board of Chang Gung Memorial Hospital (IRB102-0771A3). The judges of Taiwan’s Kaohsiung Juvenile and Family Court required underage individuals that have been arrested for substance use to participate in the treatment program in Kaohsiung Chang Gung Memorial Hospital. In total, 103 young participants who attended treatment at the hospital and their primary caregivers were recruited consecutively between July 2011 and December 2013. The inclusion criteria were as follows: (1) aged between 12 and 18 years old; (2) having illicit drug use; and (3) at least one of their caregivers could attend the treatment program. The exclusion criteria included (1) intellectual disability, (2) having apparent psychotic symptoms, and (3) having first-class illicit drug use (i.e., heroin, morphine, or cocaine).

During this research, the 103 patients were ordered to attend 10 sessions of weekly out-patient drug abuse treatment program while their caregivers were required to participate in 10 sessions of weekly parenting-skill training program. Both programs were held at the Kaohsiung Chang Gung Memorial Hospital. Before taking part in this research, each participant submitted a signed written informed consent, while the researchers emphasized whether to take part in this research or not would never affect his or her legal status and that all personal information provided would be kept strictly confidential. Details of treatment protocols and research procedures have been demonstrated elsewhere [16, 17].

Motivational enhancement psychotherapy program for young people

Young participants received 10 treatment sessions on a weekly basis. Led by two experienced psychologists from the hospital, the group relapse prevention program, which was basically constituted of motivational enhancement ideas, accommodated about eight participants in each session lasting 120 min with a 10-min break. The aim of such a group counseling meeting was to evoke the young participants’ motivations for a change by identifying the causes for their drug addiction, the reasons for their abstinence from substance abuse, their concerns about substance use and their perception of illicit drugs in their current and long-term lives. Having developed a rapport with the participants, the psychologists were able to learn how illicit drugs fitted into their lives. Feedback was the main counseling technique used during the meeting, in which the psychologists asked questions and the participants reflected their past in the hope to prompt the latter’s self-motivational statements [18]. The focus of the treatment program was to identify the situations which had put the young participants at high risk for drug abuse, to enhance their motivation to abstain from substance abuse and to develop coping strategies to prevent relapse.

Parenting skills training program for caregivers

The parenting skills training program also included 10 weekly 120-min sessions, conducted by two senior counseling psychologists or social workers appointed by the court. The therapists first shared common legal knowledge to alleviate the concerns and helplessness of the caregivers and then handled their emotional reactions to their teens, such as shock, anger and frustration. Helping the caregivers check out their current relationships and their communication skills with their teenagers, the therapists were able to guide the caregivers to judge how negative their family relationships were and how they could change their own behaviors and attitudes so as to improve their daily home environment and atmosphere. Not only did the therapists provide the caregivers with new ways to engage with their adolescents, but they also taught the caregivers how to solve such issues as their adolescents separating from them in a non-normative manner [19]. The purpose of this training program was to teach those caregivers more effective skills to deal with the drug abuse problems caused by their youths.

Research procedures and measures

Figure 1 illustrates the main points of therapy and flowchart of research procedures. At the beginning of the treatment courses, the information on sociodemographic characteristics of participating patients (e.g., categories of substances being used, history of previous convictions, family status, and academic or social status) was provided by Taiwan’s Kaohsiung Juvenile and Family Court. The young patients were asked to fill out the Chinese Craving Beliefs Questionnaire (CCBQ), the Adolescents’ Behavior-problem Scale (ABS) and the Family APGAR at both the first and last treatment sessions (10 weeks later). The patients’ caregivers were required to complete the Family APGAR, the 12-item version of the Chinese health questionnaire (CHQ-12) and the Chinese version of the Parenting Stress Index (PSI) at the first session and the last session of treatment as well.

The CCBQ was adapted from a craving beliefs questionnaire (CBQ) developed by Wright [20]. This questionnaire, consisting of 10 items, measures beliefs and understandings of substance cravings and is answered with a 4-point Likert scale (from total disagreement (1) to total agreement (4)). The higher the total score, the higher the substance craving. With acceptable reliability and effectiveness, the CCBQ is suitable as a research tool for assessing the substance craving beliefs [21].

The ABS is a self-administered questionnaire used to measure the emotional disturbance of the young patients. The ABS consists of 50 items, all of which are answered with a 6-point Likert scale. Divided into five categories, namely self-awareness, physical and mental development, school life, interpersonal relationships and family life, the ABS can be used to give a composite score and has good reliability and validity as a questionnaire [22].

Family APGAR has been widely used to measure family’s well-being [23]. It involves the following five items: degree of adaptation, partnership, growth, affection and resolution in the family. Each item is answered using a 3-point Likert scale ranging from 0 (low satisfaction) to 2 (high satisfaction). The total score ranges from 0 to 10. The higher the score, the better the family function. The Chinese version of the questionnaire has sufficient internal reliability and validity [24].

The CHQ-12, a 12-item self-reporting questionnaire, is a modified version of the General Health Questionnaire [25]. This tool has been widely used in research to identify subjects in primary care and those in a community setting who have minor psychiatric disorders. A 4-point Likert scale (0 = not at all, to 3 = more than usual) is provided as a response format to analyze the conditions during the preceding 2 weeks (score range = 12–36). The higher the score, the worse the health condition. The questionnaire has good reliability and validity [26].

The PSI is a standardized Chinese version of the original 120-item questionnaire used to measure the elements of parental function [27]. The PSI Parent Domain Scale contains 54 items and consists of seven subscales. The PSI Child Domain Scale contains 47 items and has six subscales. The parent and child domains are added together to get a total score and a derived raw-to-percentile score. The patients’ caregivers rated their level of agreement with these items on a 5-point Likert scale. The higher the score, the greater the level of parenting stress [28].

Follow-up for substance-use relapse

Upon completing the treatment courses, all the participants were reverted to court supervision and probation again, including notifying the protection officers of their academic, social, and living status about once every month. During the follow-up period, the patients were required to provide urine samples, which the judges or protection officers would test to decide at their own discretion whether or not drug residues were present. If a test result was positive, the court would give the youth in question a hearing and then sentence him or her to take reformatory education or to be confined in the detoxification unit of the detention center. The outcome of this research was concerned with substance-use relapse during a 5-year follow-up period.

Statistical analysis

We analyzed the data in this study using the statistical software package SPSS, version 21.0 (SPSS Inc., Chicago, IL, USA). Variables are presented as either mean ± standard deviation (SD) or frequency. Paired-t test was adopted to examine any changes in the measures for either the patients or their caregivers throughout the 10-week treatment program. Receiver operating characteristic (ROC) curves and the area under the curve (AUC) were used to evaluate whether the treatment effectiveness served as predictors of patients’ relapse during the 5-year follow-up period.

The completion date of the family-oriented program was set as the index date and was used to calculate risk over time. As for survival analysis, the time function was defined as the number of days from the index date to the end of the period for those patients who had no other instance of substance use to that point or to the date of relapse if such relapse occurred before the end of the follow-up period. We controlled for socio-demographic variables to develop a Cox regression model to estimate the treatment effects on relapse. Adjusted hazard ratios (aHR) were calculated with 95% confidence intervals (CI). We considered a two-tailed p-value less than 0.05 statistically significant.

Results

The mean age of the 103 young patients with substance use was 16.2 ± 1.0 years, with 81 (78.6%) of them being males (Table 1). Regarding the school or social status of these patients, 35 (34.0%) were still attending school; 34 (33.0%) had been suspended or dropped out from school; and 34 (33.0%) were employed. Regarding family status, 47 (45.6%) lived in double-parent families; 42 (40.8%) lived in single-parent families; and 14 (13.6%) had another situation (raised by grandparent(s)). Of the 103 substance-use patients, 74 (71.8%) of them used ketamine and 29 (28.2%) of them used 3,4-methylenedioxy-methamphetamine (MDMA) or methamphetamine. Twenty-seven patients had previous conviction records related to substance use.

Table 1 Characteristics of young patients with substance abuse (N = 103) participating in a weekly 10-week out-patient treatment program

Of the 103 patients that participated in this study, 97 (94.2%) completed the 10-week treatment program and assessment. Table 2 shows the changes in the patients’ measures and those of their caregivers from the baseline to the endpoint of the follow-up period. During the 10-week family-oriented programs, the CCBQ scores of the patients decreased significantly (t = 4.510, p < 0.001), while the CHQ scores (t = 3.463, p = 0.001) and the Child-domain of PSI (t = 2.276, p = 0.025) filled in by their caregivers also significantly decreased. Nevertheless, the ABS scores, Family APGAR scores, and Parent-domain PSI scores revealed no significant changes over the 10-week period (p > 0.05).

Table 2 Measures of the patients and their caregivers at the baseline and 10 weeks later through a family-oriented out-patient treatment program for youths with substance use disorder

Of the 103 substance-using patients, 39 (37.9%) relapsed within a follow-up of 5 years. We used ROC curves to investigate whether the measures during the 10-week treatment program were able to significantly predict their subsequent relapse. Figure 2 shows the ROC curve of using the proportion of changes in the patients’ measures and those of their caregivers to predict patients’ relapse of substance use. We found that the proportion of changes in the youths’ ABS scores (AUC = 0.70, p = 0.001) and Family APGAR scores rated by caregivers (AUC = 0.37, p = 0.031) significantly differentiated patients with relapse and without relapse. However, the other measures did not significantly predict patients’ relapse of substance use.

Fig. 1
figure1

The main points of therapy and flowchart of research procedures. CCBQ the Chinese Craving Beliefs Questionnaire, ABS The Adolescents’ Behavior-problem Scale, CHQ-12 The 12-item version of the Chinese health questionnaire, PSI The Chinese version of the Parenting Stress Index

Fig. 2
figure2

The ROC curve of using the proportion of changes in the patients’ measures and those of their caregivers to predict patients’ relapse of substance use. CCBQ The Chinese Craving Beliefs Questionnaire, ABS The Adolescents’ Behavior-problem Scale, CHQ-12 The 12-item version of the Chinese health questionnaire, PSI The Chinese version of the Parenting Stress Index. The proportion of changes in the youths’ ABS scores (AUC = 0.70, p = 0.001) and Family APGAR scores rated by caregivers (AUC = 0.37, p = 0.031) significantly differentiated youths with relapse and without relapse

The Cox proportional hazard models of the risk of relapse in the follow-up period are shown in Table 3. After controlling for socio-demographic variables, the changes in ABS scores were still able to significantly predict substance use relapse (aHR = 10.51, 95%CI 1.70–65.01, p = 0.011). Compared to the patients that used ketamine, the patients who used 3,4-methylenedioxy-methamphetamine (MDMA) or methamphetamine had a significantly higher risk of relapse (aHR = 2.27, 95%CI 1.02–5.06, p = 0.046). Furthermore, the patients’ family status also significantly predicted the relapse rates. Compared to subjects living in double-parent families, youths who lived in single-parent families were more likely to relapse in substance abuse during the study period (aHR = 2.77, 95%CI 1.24–6.21, p = 0.013).

Table 3 Risk of relapse after the index substance use for related variables estimated by Cox proportional hazards model

Discussion

This study provides the results of a family-oriented group treatment program that addressed both substance-using young patients and their caregivers. We found that changes in patients’ behavioral problems during the treatment program may serve as a predictor of substance use relapse during the subsequent 5 years. Furthermore, the categories of substance use and family status of the patients were also associated with their relapse.

In the 10-week group motivation-enhanced psychotherapy, whose main goal was to encourage patients to stop using drugs, the young participants' substance craving beliefs (the main result of this research) decreased significantly, suggesting that the treatment plan had produced positive effects. In addition, the CHQ scores and the Child-domain of PSI filled in by caregivers were significantly reduced as well, indicating that the caregivers who had felt helpless and frustrated at the beginning might have significantly improved along with the treatment program to have developed a better mental health and ability to face and interact with their children. The Child Domain here is defined as those qualities demonstrated by children which make it difficult for their parents to fulfill their parenting roles [29], and the training program was meant to help the caregivers reform their relationships with their teenagers and explore better strategies to get along with their children. To this end, the therapists worked together with the caregivers to enhance their parenting, communication, and problem-solving skills so as to make them more capable of fulfilling their parenting roles [30, 31].

The 5-year relapse rate among the young patients with substance use was 38%. A study of adolescent crack users revealed high rates of relapse of 65.9 and 86.4% in the first and third months, respectively [32]. Our previous cohort revealed that the 2-year relapse rate reached 33.1% among substance-use adolescents [17]. This finding suggests that breaking the drug addiction cycle for substance-using adolescents remains a challenge [33]. Notably, after the 10-week program for parenting skills training, although the ABS scores did not change significantly, the changes of ABS were the most significant index for predicting the 5-year relapse of substance use, and an increased trend of ABS was linked to a higher risk of relapse. The ABS is a self-administered questionnaire that measures patients’ emotional disturbance; if patients have a greater improvement in emotional disturbance, they are less likely to reuse a substance. Said finding supports that adolescents with substance use disorder may have high rates of depression or anxiety, and these unreleased emotional disturbances may be subsequently related to substance use [34]. Also other psychiatric disorders, such as post-traumatic stress disorder (PTSD), have been reported to be related to emotional disturbance. PTSD may be characterized by the presence of maladaptive behaviors as substance abuse, particularly in male young patients [35]. The aforementioned findings give us insight about the predictor in this treatment program and remind clinicians that the emotional status of youths warrants special attention in order to prevent patients from relapsing with substance use [32].

It was found that compared to patients using ketamine, those using MDMA or methamphetamine had 2.65 times higher relapse rates. This finding was consistent with our previous long-term follow-up study [36]. The difference in relapse risk was associated with the pharmacological properties of ketamine and stimulants. For example, the users of methamphetamine or MDMA might have had greater drug craving behaviors than ketamine users, thus leading to a higher relapse rate. Relative to the users of stimulant drugs, the ketamine users might have been in the earlier stage of substance use and might have had a greater potential to achieve abstinence from drug abuse. In addition, young addicts in single-parent families were more prone to drug relapse during the study period than those living in double-parent families. Early onset drug users might have been associated with a variety of psychosocial problems, such as behavioral patterns, family systems, peer relationships, and job adjustments [37]. Likewise, parent–child attachment, monitoring and parenting methods were identified as important factors in preventing adolescents from drug abuse [38]. Our research also revealed that living in a double-parent family might have protected young people from further drug use; the reason might be related to greater parent–child attachment and stricter discipline in a double-parent family.

This research has several limitations. First, the study was conducted in a non-comparative, non-randomized and open-label manner. All the measures in this research were self-administered; as a result, they might have been affected by socially desirable responses and motivation bias. Second, this study lacks a control group for confirming the effect of the intervention program. Third, some critical variables potentially related to substance use relapse were not recorded in this study, such as alcohol consumption, age of first onset or psychiatric comorbidities (anxiety disorders, depressive disorder or personality disorders) [39]. In addition, we did not have detailed information about the subjects who refused to participate. Fourth, ABS scores did not change significantly during the 10-week treatment. Nevertheless, ABS changes were the most significant index for predicting a 5-year relapse of substance use, which may represent that youths with substance use had a great variety of behavioral problems. Finally, this study’s sample size was small, and a validation group is warranted to verify our findings.

Conclusion

This study reveals the potential effects of a 10-week treatment program for substance using young patients and their caregivers in Taiwan. We found that changes in patients’ behavioral problems during the treatment program may serve as a predictor of substance use relapse during the subsequent 5 years. This study’s findings provide insight about substance use prevention and serve as a reference for policy-making.

Availability of data and materials

Data are available from the authors upon reasonable request and with permission of LJW.

Abbreviations

CCBQ:

The Chinese Craving Beliefs Questionnaire

ABS:

The Adolescents’ Behavior-problem Scale

CHQ-12:

The 12-item version of the Chinese health questionnaire

PSI:

The Chinese version of the Parenting Stress Index

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Acknowledgements

The authors would like to thank Tong-Ning Tsai, Ming-Hsiung Liu, Yung-Hsuan Lee, and the staff of Taiwan Kaohsiung Juvenile and Family Court, as well as to all the patients who participated in this study.

Funding

This study was funded by a Grant from Chang Gung Memorial Hospital (CMRPG8C1091 and CMRPG8D0483).

Author information

YH You, SF Lu and CP Tsai were co-first authors and contributed equally to this manuscript. They were responsible for protocol development, participant recruitment and wrote the first draft of the manuscript. MY Chen, CY Lin, MY Chong and WJ Chou assisted in protocol development and edited the submitted manuscript. YS Chen assisted in conducting the family-oriented therapy program and participant recruitment. LJ Wang is the primary researcher and coordinator of this project. He carried out the literature search, analyzed the study’s data and edited the manuscript. All authors have read and approved of submission of this article to Annals of General Psychiatry. All authors read and approved the final manuscript.

Correspondence to Liang-Jen Wang.

Ethics declarations

Ethics approval and consent to participate

This research was approved by the Institutional Review Board of Chang Gung Memorial Hospital (IRB102-0771A3). Each participant submitted a signed written informed consent, while the researchers emphasized whether to take part in this research or not would never affect his or her legal status and that all personal information provided would be kept strictly confidential.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

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You, Y., Lu, S., Tsai, C. et al. Predictors of five-year relapse rates of youths with substance abuse who underwent a family-oriented therapy program. Ann Gen Psychiatry 19, 17 (2020). https://doi.org/10.1186/s12991-020-00269-4

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Keywords

  • Substance abuse
  • Psychotherapy
  • Family
  • Juvenile delinquency
  • Relapse
  • Predictor