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. 2024 Nov 14;4(1):57. doi: 10.1007/s44192-024-00113-1

Prevalence of substance use among a sample of patients attending an outpatient psychiatric clinic in Amman, Jordan

Layali N Abbasi 1,, Tewfik K Daradkeh 2, Mohamed ElWasify 3, Sanad Abassy 4
PMCID: PMC11564451  PMID: 39542956

Abstract

Background

The issue of substance use is increasingly being recognised as a significant global public health concern. In relation to its influence in the Arab world, scholarly investigation continues to be regarded as relatively constrained in scope. We aimed to investigate the prevalence of substance use among patients with psychiatric disorders, as well as the sociodemographic and clinical characteristics of this patient population.

This cross-sectional study included 671 patients with psychiatric disorders who attended an outpatient private psychiatric clinic in Amman, Jordan, between January and May 2023. We compared the demographic and clinical characteristics of substance-using and non-substance-using patients. Bivariate and multiple binary logistic regression analyses were used to investigate factors associated with substance use.

Results

The patients were aged 20–80 years, with a mean age of 32.45 ± 10.18 years. Most patients were men, more than half were single and unemployed, and mood disorders were the most prevalent psychiatric disorder. Male sex, a younger age, lower educational attainment, current unemployment, and having a family history of substance use were associated with substance use. Substance users exhibited a higher propensity for engaging in self-harming behaviours, having medical conditions, and being subjected to emotional trauma.

Conclusions

This study found that patients with psychiatric disorders are vulnerable to experiencing substance use. Clinicians should contemplate directing their attention towards patients as a strategy to proactively address the issue of emerging substance use and enhance overall treatment outcomes.

Keywords: Cannabis, Mental illness, Psychiatric patient, Substance use

Background

Substance use among patients with psychiatric disorders is recognised as a major public health concern worldwide. However, the extent of this issue remains unclear [1, 2]. Extant statistics on substance misuse indicate that, notwithstanding legal, cultural, and religious limitations, substance abuse is a growing issue throughout the Arab world. In Arab countries, the World Health Organisation (WHO) reports that the prevalence of alcohol-use disorder varies from 8.7% in Lebanon to 0.3% in Saudi Arabia, Qatar, and Libya. Drug abuse is also present in Arab countries, and scholarly research indicates varying rates of substance abuse in each country [3].

In the United States, the abuse of drugs, including alcohol, is the most common cause of preventable illness and death [4]. More than 350,000 deaths annually are attributed to drug (including alcohol) use [5]. The National Institute of Drug Abuse and the 2015 National Survey of Drug Use and Health reported that 20.8 million people older than 12 years had substance-related illnesses [6]. Despite strict laws against substance use in the Arab world, alcohol remains the most commonly used substance, especially among adolescents and young adults, with a prevalence ranging from 4.3% to 70% [7]. However, there is a scarcity of epidemiological studies on drug use in Arab psychiatric and general populations [8].

The prevalence of substance use among individuals with severe mental illnesses, such as bipolar affective disorder, schizophrenia, antisocial personality disorder, and borderline personality disorder, is high [913]. Comorbid substance use in patients with psychosis may adversely affect their clinical and social outcomes [9, 13]. Patients with comorbid substance use and psychiatric disorders have been investigated worldwide; however, patterns of substance use may vary widely across demographic groups [9].

Despite inconsistent reporting of substance use prevalence rates among patients with psychiatric disorders due to variations in sample size and detection methods, certain features of individuals who use substances remain consistent across studies in this population. Previous research has indicated a correlation between the presence of psychiatric disorders, substance use, and certain demographic factors, such as being male, young, single, and having lower educational levels [1416].

A better understanding of substance use trends among patients with psychiatric illnesses could greatly benefit healthcare policymakers and practitioners. To the best of our knowledge, this study represents the first attempt to assess the extent of substance use among outpatients in psychiatric clinics in Jordan and determine the demographic and clinical characteristics involved. Thus, the primary goal of the present study was to investigate the prevalence of substance use in a sample of patients with psychiatric disorders who attended a psychiatric clinic in Amman and analyse this in relation to demographic and clinical variables.

Methods

Study design, setting, and period

This cross-sectional study was conducted at an outpatient private psychiatric clinic in Amman, Jordan, over a 5-month period (January to May 2023) after obtaining approval from the Institutional Review Board of Al-Balqa Applied University (1069/1/3/26). This private clinic provides treatment for a wide range of patients suffering from mental illnesses such as schizophrenia, anxiety disorders, depression, bipolar disorders, attention deficit hyperactivity disorder, substance use disorders, and those with dual diagnosis.

Inclusion and exclusion criteria

All participants were adults aged 18 years or older at the time of inclusion and provided written informed consent to participate. Excluded from the study were thirty-nine patients who were below the age of eighteen, had incomplete or insufficient data, or declined to provide consent. A total of 671 patients with psychiatric disorders attending the outpatient private psychiatric clinic for treatment and meeting the criteria for at least one psychiatric disorder were included. We reviewed the clinical data and demographic parameters of the patients, including age, marital status, educational attainment, occupational history, clinical presentations, medical history (like diabetes, hypertension, hypothyroidism, hyperthyroidism), history of self-harm, history of abuse [e.g. physical which means a person's intentional violent behavior toward another that results in bodily injury, emotional which means interpersonal violence that incorporates all forms of non-physical violence and distress exhibited through verbal and non-verbal actions, sexual which means one individual's abusive sexual behavior toward another], and current substance use, including alcohol use.

All patients underwent a psychiatric examination by a psychiatrist via a Structured Clinical Interview for DSM-5 (SCID-5). Information regarding drug use was obtained using a supportive approach to encourage patients to respond truthfully. Urine tests for psychoactive substances were performed using Abo17 Biopharm multi drug screening kits. We compared clinical and demographic variables between the patients who did and those who did not use drugs.

Statistical analyses

Data were gathered and tabulated using SPSS software, version 28 (IBM Corp., Armonk, NY). Categorical data are presented as frequencies and percentages, and continuous data are presented as means and standard deviations. Multiple response analysis was used to demonstrate the frequency and percentage of psychoactive substances used. Bivariate and multiple binary logistic regression analyses were employed to investigate factors associated with substance use, with odds ratios (ORs) used to measure the strength of the association between predictors and the outcome variable. A p-value of 0.05 was considered statistically significant.

Results

Sociodemographic and clinical characteristics of the participants

Among the 671 patients included in the study, 48.0% (n = 322) reported substance use, while 52.0% (n = 349) did not. The mean age of the patients was 32.45 ± 10.18 years, and 81.4% (n = 546) were men. Among the participants, 388 (57.8%) were single, 360 (53.7%) held a bachelor’s degree or higher, 394 (58.7%) were employed, and 545 (81.2%) lived with their families. Moreover, 506 (75.4%) were smokers, 110 (16.4%) reported having a medical illness, and 25% disclosed engaging in self-harm. The most prevalent psychiatric diagnosis was major depressive disorder, accounting for 30.6% of cases, followed by anxiety disorders (28.0%). Additionally, 148 patients (22.1%) reported a history of emotional abuse, 40 (6.0%) reported physical abuse, 57 (8.8%) reported sexual abuse, and 47 (7.0%) had a family history of substance use (Table 1).

Table 1.

Sociodemographic characteristics of the participants

Variables Categories Frequencies Percentages
Substance user User 322 48.0
Non-user 349 52.0
Sex Male 546 81.4
Female 125 18.6
Marital status Single 388 57.8
Married 229 34.1
Divorced 54 8.1
Educational level Elementary 92 13.7
Secondary 126 18.8
University student 93 13.9
University degree 360 53.7
Employment Yes 394 58.7
No 277 41.3
Living with family Yes 545 81.2
No 126 18.8
Smoking status Smoker 506 75.4
Non-smoker 165 24.6
Medical illness Healthy 561 83.6
Not healthy 110 16.4
Self-harm Yes 158 23.5
No 513 76.5
Psychiatric disorder Borderline personality disorder 41 6.1
Antisocial personality disorder 76 11.3
Mood disorder 205 30.6
Attention deficit hyperactivity disorder 64 9.5
Anxiety disorder 188 28.0
Psychotic disorder 59 8.8
Substance use disorder 38 5.7
Family history of substance use Yes 47 7.0
No 624 93.0
Emotional abuse Yes 148 22.1
No 523 77.9
Physical abuse Yes 40 6.0
No 631 94.0
Sexual abuse Yes 57 8.8
No 614 91.5
Age/years Mean ± SD 32.45 ± 10.18
Age of starting drug use Mean ± SD (n = 322) 20.68 ± 6.25
Substance Single 97 30.1
Multiple 225 69.9

Factors associated with substance use

Bivariate logistic regression analysis (Table 2) revealed that substance use was 1.55 times more common in men than in women. Patients with an elementary- or secondary-level education had an OR of 5.07 compared with those with a university-level education. Additionally, patients without a job, a history of self-harm, or a family history of substance use had ORs of 2.01, 4.29, and 3.43, respectively. The highest correlation with drug use was observed among smokers, with an OR of 7.22. Individuals who experienced emotional abuse had an OR of 1.70, while those with a medical illness had an OR of 4.44, indicating a higher likelihood of engaging in substance use.

Table 2.

Binary logistic regression results of factors associated with substance use

Predictors Bivariate binary logistic regression Multiple binary logistic regression
Unadjusted OR 95% CI P-value Adjusted OR 95% CI P-value
Sex
 Female 1.0 1.0
 Male 1.55 1.04–2.30 0.030 1.84 1.08–3.13 0.025
Age (years) 0.98 0.96–0.99 0.006
Marital status
 Divorced 1.0  < .001 1.0  < 0.001
 Single 0.51 0.28–0.94 0.030 0.24 0.11–0.52  < 0.001
 Married 0.25 0.13–0.47  < 0.001 0.19 0.09–0.40  < 0.001
Educational level
 University degree 1.0  < 0.001 1.0 0.033
 Elementary 5.07 3.04–8.47  < 0.001 2.66 1.36–5.20 0.004
 Secondary 2.39 1.58–3.61  < 0.001 1.50 0.88–2.54 0.134
 University student 1.02 0.79–1.32 0.887 1.29 0.68–2.43 0.431
Employment
 Yes 1.0  < 0.001 1.0  < 0.001
 No 2.01 1.47–2.74 2.99 1.71–5.25
Self-harm
 No 1.0  < 0.001 1.0  < 0.001
 Yes 4.29 2.88–6.38 3.53 2.07–6.03
Family history of substance use
 No 1.0  < 0.001 1.0  < 0.001
 Yes 3.43 1.75–6.72 4.04 1.84–8.87
Smoking behaviour
 No 1.0 4.98–9.63  < 0.001 1.0  < 0.001
 Yes 7.22 5.99 2.12–10.96
Psychiatric disorders
 Substance use disorder 1.0  < .001 1.0  < .001
 Borderline personality disorder 0.23 0.07–0.77 .017 0.25 0.06–1.02 .054
 Antisocial personality disorder 4.35 0.76–24.93 .099 3.87 0.64–23.55 .142
 Mood disorder 0.07 0.22–0.19  < .001 0.07 0.02–0.24  < .001
 Attention deficit hyperactivity disorder 0.13 0.04–0.42  < .001 0.14 0.04–0.48 .002
 Anxiety disorder 0.06 0.02–0.17  < .001 0.08 0.03–0.26  < .001
 Psychotic disorder 0.06 0.02–0.17  < .001 0.06 0.02–0.21  < .001
Emotional abuse
 No 1.0 0.005 1.0  < 0.001
 Yes 1.70 1.17–2.47 3.56 2.1–6.05
Medical illness
 No 1.0  < 0.001 1.0 0.011
 Yes 4.44 3.17–6.21 2.1 1.18–3.58
Physical abuse
 No 1.0 0.217
 Yes 1.50 0.79–2.87
Sexual abuse
 No 1.0 0.200
 Yes 1.43 0.83–2.47
Living with family
 Yes 1.0 0.280
 No 0.81 0.55–1.19

Conversely, older patients, both single and married, had lower probabilities of drug use than did younger and divorced patients, with ORs of 0.98, 0.51, and 0.25, respectively. Living alone and being subjected to physical and sexual abuse did not show a significant correlation with substance use; therefore, these variables were excluded from the subsequent model.

In the backward multiple binary logistic regression, male sex, a primary level of education, and unemployment were factors associated with a higher likelihood of substance use, with ORs of 1.84, 2.66, and 3.53, respectively. Patients who self-harmed, had a family history of substance use, and were smokers also exhibited an increased likelihood of substance use, with ORs of 3.53, 4.04, and 5.99, respectively.

Furthermore, the bivariate analysis demonstrated a significant association between age and substance use. However, when age was included in the multiple binary logistic regression model, it no longer remained significant (p > 0.05).

Use of multiple psychoactive substances among patients with psychiatric disorders

The use of a variety of substances was examined, and the subsequent multiple response analysis revealed the prevalence of the use of each substance. The most commonly used substances were alcohol (75.2%), followed by cannabis (62.1%) and benzodiazepines (38.8%). Conversely, the least frequently consumed substances were ketamine (2.8%), inhalants (2.2%), and mushrooms (0.6%) (Fig. 1).

Fig. 1.

Fig. 1

The use of multiple psychoactive substances among patients with psychiatric disorders

Multiple response analysis for substance use based on psychiatric disorders

The use of different types of substances was associated with different psychiatric disorders, with alcohol and cannabis being commonly used among individuals with various psychiatric disorders (Table 3).

Table 3.

Multiple response analysis for most substances used based on psychiatric disorders

Psychiatric diagnosis Cannabis Captagon Alcohol Benzodiazepines Cocaine Ecstasy Crystal meth Tramal Inhalants LSD Lyrica Ketamine Heroin K2 Mushrooms
Borderline personality disorder 13 4 24 13 2 1 1 2 0 1 6 1 1 1 0
48.2% 14.8% 88.9% 48.0% 7.4% 3.7% 3.7% 7.4% 0.0% 3.7% 22.2% 3.7% 3.7% 3.7% 0.0%
Antisocial personality disorder 53 37 52 36 10 5 17 16 3 5 37 3 6 14 1
71.6% 50.0% 70.3% 48.6% 13.5% 6.8% 23.0% 21.6% 4.1% 6.8% 50.0% 4.1% 8.1% 18.9% 1.4%
Mood disorder 35 11 50 22 3 0 0 5 0 2 12 0 2 1 1
48.6% 15.3% 69.4% 30.6% 4.2% 0.0% 0.0% 6.9% 0.0% 2.8% 16.7% 0.0% 2.8% 1.4% 1.4%
Attention deficit hyperactivity disorder 30 16 27 10 7 7 3 4 1 5 12 3 2 1 0
88.2% 47.1% 79.4% 29.4% 20.6% 20.6% 8.8% 11.8% 2.9% 14.7% 35.3% 8.8% 5.9% 2.9% 0.0%
Anxiety disorder 32 11 43 17 2 1 2 4 1 1 20 1 0 3 0
52.5% 18.0% 70.5% 27.9% 3.3% 1.6% 3.3% 6.6% 1.6% 1.6% 32.8% 1.6% 0.0% 4.9% 0.0%
Psychotic disorder 18 8 15 9 3 0 5 3 1 1 6 0 1 5 0
90.0% 40.0% 75.0% 45.0% 15.0% 0.0% 25.0% 15.0% 5.0% 5.0% 30.0% 0.0% 5.0% 25.0% 0.0%
Substance use disorder 19 15 31 18 6 1 6 6 1 2 10 1 1 2 0
55.9% 44.1% 91.2% 52.9% 17.6% 2.9% 17.6% 17.6% 2.9% 5.9% 29.4% 2.9% 2.9% 5.9% 0.0%

Association between demographic factors and the use of one or more substances

The results of the bivariate binary logistic regression analysis (Table 4) revealed that men had a higher likelihood (OR = 2.63) of using multiple substances than did women. Additionally, older patients were less likely (OR = 0.95) to engage in the use of multiple substances compared with younger patients. Furthermore, individuals with an elementary-school educational level and those with a family history of substance use showed higher ORs (2.51 and 5.19, respectively) for using multiple psychoactive substances than did those with a university degree and no family history of substance use.

Table 4.

Association between demographic factors and the use of multiple substances using binary logistic regression analysis

Predictors Bivariate binary logistic regression Multiple binary logistic regression
Unadjusted OR 95% CI P-value Adjusted OR 95% CI P-value
Sex
 Female 1.0 0.002 1.0 0.048
 Male 2.63 1.41–4.89 2.60 1.01–6.71
Age (years) 0.95 0.92–0.97  < .001 0.96 0.93–0.99 .006
Educational level
 University degree 1.0 0.036
 Elementary 2.51 1.24–5.06 0.010
 Secondary 1.18 0.65–2.17 0.583
 University student 2.03 0.97–4.23 0.060
Family history of substance use
 No 1.0 0.008 1.0 0.005
 Yes 5.19 1.55–17.40 6.06 1.71–21.45
Psychiatric disorders
 Substance use disorder 1.0  < 0.001 1.0  < 0.001
 Borderline personality disorder 0.61 0.21–1.82 0.378 0.85 0.19–3.74 0.834
 Antisocial personality disorder 2.97 1.03–8.56 0.044 2.00 0.66–6.03 0.221
 Mood disorder 0.34 0.14–0.83 0.018 0.31 0.12–0.80 0.016
 Attention deficit hyperactivity disorder 1.68 0.52–5.39 0.383 1.26 0.36–4.43 0.719
 Anxiety disorder 0.52 0.21–1.30 0.160 0.48 0.18–1.25 0.132
 Psychotic disorder 3.24 0.62–16.83 0.162 2.41 0.50–12.99 0.305
Marital status
 Divorced 1.0 0.387
 Single 1.44 0.68–3.07 0.346
 Married 0.66 0.29–1.50 0.325
Employment status
 Yes 1.0 0.544
 No 1.16 0.72–1.87
Living with family
 Yes 1.0 0.854
 No 1.06 0.56–2.0
Self-harm
 No 1.0 0.413
 Yes 1.23 0.75–2.04
Smoking behaviour
 No 1.0 0.551
 Yes 2.33 0.14–37.69
Emotional abuse
 No 1.0 0.122
 Yes 1.72 0.87–3.43
Physical abuse
 No 1.0 0.367
 Yes 1.60 0.58–4.44
Sexual abuse
 No 1.0 0.884
 Yes 1.06 0.48–2.33
Medical illness
 No 1.0 0.377
 Yes 1.24 0.77–2.00

In the multivariable logistic regression, men continued to exhibit a higher OR of using multiple substances than did women (OR = 2.60), while patients who were older or had mood disorders had lower odds of using multiple substances (OR = 0.96 and OR = 0.31, respectively). The strongest predictor for using multiple substances was found to be a family history of substance use (OR = 6.06). However, educational attainment was not a robust predictor of using multiple substances and was therefore excluded from the final model.

Discussion

Substance abuse among patients with psychiatric disorders is an increasing concern in the Arab world, given the exposure of individuals and populations to diverse cultures and contemporary substances [5]. To gather information on the prevalence of substance use, the sociodemographic and clinical variables of the users, and the types of substances used, we conducted this study on substance use among patients with psychiatric disorders in Amman, Jordan. It is worth noting that the prevalence of drug abuse in the Arab world appears to be lower than that in Western countries [17].

The present findings support those of earlier clinical investigations indicating that men are more likely than women to engage in substance use [16]. According to a biopsychosocial model, men tend to participate in hazardous activities more frequently, have easier access to substances, and experience less social stigma. In our study, substance users were found to be younger than non-users, which aligns with global research findings [17]. Therefore, young male patients with psychiatric disorders are at a higher risk of substance-related problems, as observed in similar studies conducted in South London [3, 5, 10].

Our study also identified a significant association between limited educational attainment and the prevalence of substance use, consistent with the results of a study conducted in the United States [18]. These findings support the hypothesis that education serves as a protective factor against substance abuse and that substance use may negatively impact academic motivation [19].

Furthermore, our study revealed an association between unemployment and substance use, which aligns with international research findings [20]. This could be attributed to unemployed individuals using substances as a coping mechanism for dealing with unemployment. Moreover, substance users may experience a greater burden of mental illness symptoms, which could contribute to their unemployment.

Having a family history of substance use was significantly associated with substance use in our study, consistent with the findings of research conducted at a rehabilitation centre in Ahmedabad, India [21]. Strong evidence suggests that family history plays a role in substance use [22, 23], influenced by both genetic and environmental factors [24]. Social factors are also associated with an increased risk of substance abuse [25]. Our research further revealed that patients who experienced emotional maltreatment were more likely to engage in substance use.

In our study, similar to the findings of a report from the United Kingdom and North America, the most commonly used substance among patients with psychiatric disorders was alcohol [26, 27]. However, this finding contradicts the pattern observed in the rest of the world, as Arab countries tend to have lower rates of alcohol use and alcohol use disorders, with higher rates of lifelong abstainers (94.9%) [28]. Conversely, our study demonstrated that alcohol was the most used substance among our cohort of patients with psychiatric disorders. In Arab countries where alcohol is legal, individuals with substance use issues frequently abuse alcohol, as observed in the United Arab Emirates [29, 30] and Lebanon [31]. This discrepancy highlights the unique cultural and social factors that contribute to substance use patterns in different regions.

Worldwide data have shown that cannabis is the most commonly used illicit substance [32], which is in line with our findings. Specifically, among patients with psychosis, we found that cannabis was the most commonly used substance, which is consistent with findings from other studies [3335]. The relationship between cannabis use and psychosis is significant. It is likely a complex, multidirectional relationship, and the precise mechanisms are still a matter of debate [36].

We also found that the prevalence of opiate use and its association with psychiatric disorders were lower and weaker, respectively, compared with those of other substances. This is consistent with findings from other studies. For instance, a Swedish study by Dalmau et al. [37] reported a comorbidity rate of less than 6%. However, it is noteworthy that the comorbidity rate of mixed opiate abusers significantly increases when alcohol abuse is present [13].

The existing research suggests that the prevalence of substance abuse varies among Arab countries, although there is a concerning prevalence of polysubstance use [38]. Similarly, in our study, most patients were polysubstance users (69.6%), with alcohol (75.2%), cannabis (62.1%), and benzodiazepines (38.8%) being the most commonly used substances. It is important to note that polysubstance use poses unique risks in terms of substance interactions and can impact the effectiveness of substance use disorder treatments. Individuals may engage in polysubstance use to mitigate the adverse effects of one substance by another, to enhance the effects of a substance, or due to the availability of different substances [38].

The research findings have significant clinical implications. Systematic screening for substance use in psychiatric patients is essential, it is also important to address comorbidities in treating patients with substance use. Implementing early preventive strategies for substance use in all environments, in addition to educational initiatives highlighting the risks associated with substance use. The consideration of abuse or addiction should precede the prescription of drugs such as benzodiazepines, tramadol, or pregabalin, among other substances, by medical practitioners. This research also emphasises the need of implementing substance use awareness programs, systematic screening, early detection, and suitable treatment of substance use in patients with mental illness.

Limitations

The study has some limitations that should be considered. First, the data used in this study were self-reported, which may introduce bias and inaccuracies. Additionally, the study focused on a specific population and may not be representative of substance use patterns in other demographics or regions.

Conclusions

The available literature on substance use and abuse in Arab countries is currently limited. However, among patients with psychiatric disorders, our findings indicate that substance use is more prevalent among certain demographic groups, specifically young, unemployed men with a low level of education and a family history of substance use. These findings highlight the need for further research in diverse settings and populations to better understand the scope and underlying factors contributing to substance use in Arab countries. Additionally, targeted interventions and prevention strategies should be developed to address the specific needs of these high-risk groups and reduce the burden of substance abuse in these communities.

Acknowledgements

Not applicable.

Glossary

Abbreviations

OR

odds ratio

SCID-5

Structured Clinical Interview for DSM-5

Author contributions

Research idea, material preparation, data collection and analysis, and writing the first draft of the manuscript were performed by Layali N Abbasi. Tewfik K Daradkeh, Mohamed ElWasify, and Sanad Abassy performed data analysis and reviewed and commented on the manuscript. All authors read and approved the final manuscript.

Funding

None.

Data availability

Data is available upon request.

Declarations

Ethics approval and consent to participate

The study was designed in accordance with the Declaration of Helsinki and its later amendments. The study protocol was approved by the Institutional Review Board of Al-Balqa Applied University (1069/1/3/26). All the participants provided written informed consent to participate.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Footnotes

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Data Availability Statement

Data is available upon request.


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