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Suicide Ideation and Drug Craving in Patients Under Methadone Maintenance Treatment (MMT)

AUTHORS

Nour-Mohammad Bakhshani ORCID 1 , Shahab Lotfinia ORCID 2 , * , Abolfazl Payandeh 3 , Zohre Soorgi 2

1 Children and Adolescent Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran

2 Faculty of Medical Science, Zahedan University of Medical Sciences, Zahedan, Iran

3 Department of Epidemiology & Biostatistics, Health Promotion Research Center, School of Health, Zahedan University of Medical Sciences, Zahedan, Iran

How to Cite: Bakhshani N, Lotfinia S, Payandeh A, Soorgi Z. Suicide Ideation and Drug Craving in Patients Under Methadone Maintenance Treatment (MMT), Int J High Risk Behav Addict. Online ahead of Print ; In Press(In Press):e91668. doi: 10.5812/ijhrba.91668.

ARTICLE INFORMATION

International Journal of High Risk Behaviors and Addiction: In Press (In Press); e91668
Published Online: September 2, 2019
Article Type: Research Article
Received: March 17, 2019
Revised: July 2, 2019
Accepted: July 31, 2019
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Abstract

Background: Currently, methadone maintenance treatment (MMT) is a well-known method, for treating opiate dependence in many parts of the world. Despite being in MMT programs, craving has an important role in relapses. Substance abusers are at high risk of suicide, and suicidal ideation is a key factor for predicting suicide attempts.

Objectives: This study was conducted to determine suicide ideation and drug craving and their predictors in patients under MMT.

Methods: This cross-sectional study was conducted on 234 patients under MMT at Baharan MMT Clinic of Zahedan, Iran. Participants completed a set of self-report standard questionnaires, including Beck’s Depression Inventory, Beck’s Anxiety Inventory, Borderline Personality Scale, Social Support Appraisals Scale, the Communication Skills Inventory, and Craving Inventory. Bivariate correlation analyses and linear regression model were employed to identify the predictors of suicide ideation and craving.

Results: Occupational status, suicide attempts, suicide in the family, symptoms of borderline personality, and communication skills were significant predictors for suicide ideation. The duration of MMT and borderline personality symptoms were also important determinants of craving.

Conclusions: Since people under MMT have higher suicide ideation and it can be a risk factor for suicide attempts, it is suggested to focus on early detection of suicide ideation. Mental health staff must pay attention to the risk factors for craving because it could become the cause of drop-out during treatment.

Keywords

Suicide Craving Methadone Substance Related Disorders

Copyright © 2019, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

1. Background

Methadone is a syntactic long-acting full μ-opioid agonist that acts by parenteral and oral routes, at first synthesized as a possible painkiller in Germany in the late 1930s and 1950s in the United States. After research during 1964, it was used as a maintenance treatment for heroin addiction, and approved by the U.S. Food and Drug Administration (FDA) in 1972 (1).

Currently, methadone maintenance treatment (MMT) is an important method for the treatment of opiate dependence in many parts of the world (2). Furthermore, MMT provides a stable background dosage of opioids that blocks craving, blocks the “high” of other opioids, provides physiologic homeostasis (1), and reduces side effects, such as deaths related to heroin use (3). Methadone is orally administered and has a 24- to 36-hour half-life (4). Previous studies have shown that treatment with methadone is safe and effective (5).

Drugs have a strong physical and psychological dependency, and the vast majority of substance abusers relapse after detoxification treatment and one of the psychological factors is craving; opiate craving may play a role in the continued use of opiates, despite being in MMT. Opiate craving might alleviate withdrawal symptoms or increase desire due to euphoric effects. Craving is a subjective phenomenon experienced by many drug users and has a strong association with relapse after treatment (6), and it can be triggered by environmental factors. Despite being in MMT programs, craving has an important role in relapses. Health staff need to notice the elements that may not be created by Methadone, like non-compliance with treatment, stress, and poor recovery environment (7).

Substance abusers are at high risk of suicide, and suicide is one of the major reasons for death among opioid users (8). The rate of suicide attempted is greatly higher in substance abusers (with a lifetime rate of 17% to 40%) than the general population (with a lifetime rate of 3% to 5%) (9). Suicide ideation is a key factor for suicide attempts, suicide ideation defined by the presence of plans and wishes to perform suicide in individuals, who have not performed any recent obvious suicide attempts (10). In the national comorbidity survey, the transition chances from suicide ideation to suicide plan were 34% and from a plan to attempt were 72% (11, 12). Since substance use increases the likelihood of suicide ideation, more studies need to focus on early detection. Important interventions must be developed to prevent completed suicide (13, 14). Since maintenance treatment with methadone increases quality of life, it may reduce the risk of suicide (15).

2. Objectives

The present study aimed at assessing suicide ideation and craving and its predictors in patients at MMT.

3. Methods

3.1. Participants and Procedure

This cross-sectional study was conducted during year 2018. Participants in this study were recruited from the methadone maintenance treatment (MMT) program in Baharan MMT Clinic of Zahedan, Iran.

A total of 234 patients participated in this study, and they completed a set of self-reported questionnaires. Informed consent was obtained from all participants, and all the patient records were kept confidential. The inclusion criteria for this study was having at least elementary literacy in order to have the capability for completing the questionnaires and patients, who consumed any substance except methadone were excluded from the study. The study procedure was approved by the ethics committee of Zahedan University of Medical Sciences (ZUMS), Iran.

3.2. Measurements

The assessment included demographic characteristics, encompassed lifetime information of the type of substance use before treatment, suicide attempts, history of suicide in the family, relapses, current methadone dosage, and duration of MMT.

The Beck Depression Inventory (BDI) is a 21-item Likert scale questionnaire, which evaluates the symptoms of depression. Scores range from 0 (lowest severity) to 63 (highest severity), a score between 0 to 21 shows low depression, a score between 21 and 31 describes moderate depression and a score higher than 31 shows severe depression. The examiner can provide the test instruction in writing or verbally to the patient (16). The validity and reliability of the Persian version are 0.73 and 0.91 (17).

The Beck Anxiety Inventory (BAI) is a 21-item Likert scale, which evaluates the symptoms of anxiety. A score between 0 and 21 shows low anxiety, from 22 to 35 indicates moderate anxiety, and higher than 36 is potentially levels of clinical anxiety (18). The validity and reliability of the Persian version are 0.72 and 0.83 (19).

The Borderline Personality Scale (STB) has 22 items and was designed to assess the borderline personality from a variety of dimensions (hopelessness factor, impulsivity factor, paranoid/dissociative symptoms). Questions given a score of one (for positive answer) or zero (for negative answer) (20). The validity and reliability of the Persian version are 0.64 and 0.61 (21).

The Social Support Appraisals Scale (SS-A) is a Likert (Score 0 to 5) instrument with 23 items based explicitly on Cobb’s (1976). Except for SS-A total (sum of all 23 items), three components are typically measured: family, friends, and people or others in a general way (22). The validity and reliability of the Persian version are 0.85 and 0.90 (23).

The Communication Skills Inventory of Jerabek has 34 items and is self-report. Responses are in a five-point Likert scale (1 = never, 2 = seldom, 3 = occasional, 4 = most times, and 5 = always). Total scores are categorized as follow: 34 to 68, poor; 69 to 102, moderate; ≥ 103, and strong communication skills (24). The validity and reliability of the Persian version are 0.71 and 0.89 (25).

Beck Scale for Suicidal Ideations (BSSI) is a 19-item inventory developed to identify the severity of suicidal ideation. Items evaluate the respondent’s plans for suicide (26). The scale is based on a Likert and scored from 0 to 2. A score from 0 to 5 shows low risk, 6 to 19 high risk, and 20 to 38 very high risk of suicide (27). The validity and reliability of the Persian version are 0.76 and 0.95 (28).

Craving scale is a 20-item self-report, which measures the thoughts and temptation of drug abusers. This scale was made by Faderdy, Barafran, and Ziaee. The questions were scored based on a Likert scale, ranging from very low (1) to very high. The validity and reliability of the Persian version are 0.76 and 0.95. The validity and reliability of the Persian version are 0.55 and 0.94 (4, 29).

3.3. Statistical Analysis

After collecting the data, data was entered in the SPSS (version 22) software. First, data quality was carefully evaluated, statistical analysis included Pearson correlation coefficients between two quantitative variables, Eta between nominal and internal variables, Gamma between two ordinal variables, chi-square, and Fisher exact tests were used for evaluation of dependency between two categorical variables. Finally, multiple regression models were used to determine the predictors for suicide ideation and craving in MMT patients. An expert performed all the statistical analyses.

4. Results

From a total of 234 participants, 195 (83.3%) were male. The mean ± standard deviation of age of participants was 39.1 ± 9.92. The sociodemographic data, patterns of substance use before MMT, suicide attempts, history of a family suicide, relapses, current methadone dosage, duration of MMT, suicide ideation, and craving of participants are summarized in Table 1.

There were 51 (21.8%) patients, who had a different level of suicide ideation. According to the bivariate correlation analysis, increasing age, having a job, higher social support, higher communication skills and being male significantly reduced suicide ideation. However, being male, increased suicide attempts, a family with suicide history, higher depression, borderline personality symptoms, and higher anxiety increased suicide ideation.

There were 93 (39.7%) patients, who had a different level of craving. According to the bivariate correlation analysis, increasing age, having a job, higher communication skills, and longer duration of MMT skills significantly reduced craving. However, being single, having a family with suicide history, higher depression, borderline personality symptoms, and higher anxiety increased craving.

Table 1. Sociodemographic Characteristic of Participants (N = 234)
VariablesValuesa
Age39.1 ± 9.92
Methadone dose (cc)13.56 ± 5.63
Duration of MMT (months)24.28 ± 31.10
Gender
Male195 (83.3)
Female39 (16.7)
Marital status
Single62 (26.5)
Married143 (61.1)
Divorced or widow29 (12.4)
Occupational status
On job118 (50.4)
jobless116 (49.6)
Education
Elementary67 (28.6)
Under the diploma90 (38.5)
Diploma and above77 (31.9)
Suicide attempts
None191 (81.6)
1 - 2 attempt29 (12.4)
≥ 3 attempt14 (6)
Suicide in the family
Have16 (6.8)
Have not218 (93.2)
Relapse
None86 (36.8)
< 5113 (48.3)
≥ 535 (14.9)
The pattern of substance use
Opiate126 (53.8)
Stimulants35 (15)
Opiate and stimulants44 (18.8)
Other patterns29 (12.4)
Suicide ideation
Low risk183 (78.2)
High risk35 (15)
Very high risk16 (6.8)
Craving
No141 (60.3)
Low37 (15.8)
Average31 (13.2)
High25 (10.7)

aValues are expressed as mean ± SD or No. (%).

Results of correlation analysis is summarized in Table 2.

A stepwise linear regression model was conducted to identify the predictors of suicide ideation and craving. The researchers also checked multi-collinearity of the predictors. The results are presented in Table 3. Having no job, history of suicide attempts, suicide in the family, borderline personality disorder symptoms and communication skills can predict 34% of the variation in suicide ideation (F = 23.92, P < 0.001).

Table 2. Results of Bivariate Correlation Analysis for Suicide Ideation and Craving
VariablesSuicide ideationCraving
rPrP
Age-0.17< 0.001-0.27< 0.001
Gender (Male)0.160.050.140.19
Occupational status (on job)-0.66< 0.001-0.310.026
Suicide attempts (yes)0.70< 0.0010.150.661
Marital status (single)0.080.180.110.002
family suicide (yes)0.190.0120.230.009
depression0.49< 0.0010.29< 0.001
borderline0.48< 0.0010.36< 0.001
anxiety0.32< 0.0010.42< 0.001
Social support-0.14< 0.001-0.110.08
Communication skills-0.29< 0.001-0.18< 0.001
Duration of MMT-0.030.63-0.29< 0.001

The shorter duration of MMT and Borderline personality disorder can predict 20% of the variation in craving (F = 28.04, P < 0.001).

Base on this predictors, Borderline personality disorder symptoms have a higher effect on suicide ideation (standard coefficient Beta = 0.27) and suicide in the family has less effect (standard coefficient Beta = 0.12). From the Craving predictors, Borderline personality disorder symptoms have a higher effect (standard coefficient Beta = 0.33) and duration of MMT has a lower effect (standard coefficient Beta = -0.26).

Table 3. Results of Linear Regression Model of Predictors on Suicide Ideation and Craving
VariablesSuicide IdeationCraving
BaSE (B)bP ValueBaSE (B)bP Value
Constant6.722.850.029.712.51< 0.001
Occupational status (on job)-2.990.83< 0.001---
Suicide attempts (yes)4.491.18< 0.001---
Suicide in the family (yes)3.661.640.03---
Borderline0.410.09< 0.0011.350.24< 0.001
Communication skills-0.080.030.019---
Duration of MMT----0.170.04< 0.001
R2 = 34%; F = 23.92; P < 0.001R2 = 20%; F = 28.04; P < 0.001

aRegression coefficients.

bStandard error (SD/n).

5. Discussion

This study aimed at determining the rate of suicide ideation and craving and their predictors in patients at MMT. After it evaluated 234 participants under MMT, the findings showed that 39.7% of the patients had different levels of craving, and 21.8% were at high or very high risk of suicide. The results showed that depression, anxiety, borderline personality disorder symptoms, lower communication skills, lower social support, having a history in family members, suicide attempts, occupation status, being female, and lower age had a correlation with suicide. Furthermore, occupational status, suicide attempts, suicide in the family, borderline personality disorder and communication skills could be a predictor for suicide ideation. Also, younger age, depression, borderline personality disorder, anxiety, lower communication skills, shorter duration of MMT, occupational status, being single, and history of suicide in the family had a correlation with craving. The duration of MMT and borderline can be a predictor for craving.

Communication skills is one of the predictors for suicide ideation in MMT patients. Communication skills allow people to communicate productively and properly with others. However, poor communication skills is a determinant of suicide ideation and can cause loneliness and more stress in these people (30). In 2017, similar research to the current study showed poor communication skills, as a factor associated with suicidal ideation (31).

Employment was an important outcome indicator in the context of addiction treatment and rehabilitation (32). A study in 2015, similar to the current study, showed there is a significant relationship between being unemployed and suicide ideation. Unemployment is a risk factor for poor mental health status and has been found to be both a significant and unique risk factor for suicidal ideation (33). The result of Blakely’s study showed that the association between being unemployed and suicide ideation was attributable to confounding determinants associated with the socioeconomic state and that it is barely related to mental health. Furthermore, the absence of economic independence as a result of unemployment decreases the probability of using health services properly (34).

A borderline personality disorder is another predictor for both suicide ideation and craving in patients under MMT. According to the latest researches, almost 80% of people with BPD perform at least one suicide attempt in their life and the suicide rate amongst people with BPD is 50 times higher than the general population. There are features in BPD that lead patients to suicide, such as dysregulation of emotions, impulsivity that engages them in a moment of intense emotional pain, brain abnormalities, chronic condition, comorbidity with other mental disorders and similar to our patients, substance use that causes of greater impulsivity (35, 36). Also, they are at a greater risk for relapse because of the inability to cope through problem-solving when they face negative emotional states and social rejection (37). Results of another study in 2015, similar to the current study, showed a positive correlation between borderline personality traits and level of craving (38).

This study showed that the duration of MMT could be a determinant for drug craving, and patients, who have been under MMT for a longer time have less craving in comparison to patients, who have been under MMT for a shorter time. A study in 2014 identified similar results based on brain activity; this study measured craving with a visual analog scale, before and after imaging and the results showed that long duration of MMT may improve craving response by adjusting the impaired function in the bilateral dorsal striatum caused by prior drug use (39).

Having a history of suicide in the family is correlated with both craving and suicide ideation. It is well-recognized that suicidal behavior runs in families. It is possible that the transmission of suicidal behaviors in families occurs through the mediation of impulsive aggression. Considering that around 50% of the variance is explained by genes, the role of environmental factors is important. One of the explanations can be adverse familial environments (40).

Age was another factor associated with craving in the current study. It shows that older patients tended to have less craving than younger individuals. In line with this findings, studies showed that older people are more likely to remain in treatment (8). Mood disorders are important predictors for suicidal ideation yet do not explain the transition from suicide ideation to suicide attempt. Rather, features associated with anxiety and impaired impulse control appear important for predicting suicide attempts. The last study on MMT patients supports the current findings that social support for MMT directly affected suicidal ideation (41). Another study on MMT patients supported the current findings that patients are depressed and anxious, and female are more likely to have suicide ideation (41).

Studies show anhedonia, low belongingness, bullying, burdensomeness, defeat, emotion dysregulation, entrapment, and social disconnection as a predictor of suicidal ideation yet these risk factors may be risk factors for suicide ideation, not suicide attempts. Increased information about the shift from suicide ideation to suicide attempts, is essential for prediction and prevention (42). Although most individuals, who have suicide ideation do not act on their thoughts, it seems that when suicidal ideation combines with the capacity to overcome the fear of death, suicide attempts may occur (43).

Most studies reported that higher dose of methadone is a protective factor for craving. This information provides guidelines for adequate methadone dosing to prevent relapses. In contrast, another evidence shows that patients in maintenance treatment are not protected from experiencing craving. Along with the current study, sufficient methadone dosage seems to be a crucial factor for the efficiency of treatment (7).

Since many factors can be associated with suicide ideation and craving, it is suggested to explore the role of other factors in future studies. Also, the factors that can predict the transmission of suicidal ideation to suicide attempts in these patients must also be considered. Since the majority of participants in this study had a lower level of socio-economic status, this research should be repeated in patients with medium and high level socio-economic status.

5.1. Conclusions

People under MMT, experience more pressure from their family or society and that makes them more vulnerable. They may choose suicide or relapse to drugs because of their poor ability to find a better solution, and this shows the importance of monitoring them and identifying the risk factors for suicide and relapses.

Acknowledgements

Footnotes

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