|   | 
        Author/s | 
        Type of    treatment | 
        Methodology | 
        Contribution | 
      
      
        | 1. | 
        Abdullah  [56] | 
        Historical    analysis | 
        Historical    analysis,  literature review    (Amphetamine-type stimulants (ATS)) | 
        Meaning    of drug use has changed over time and context depending on socio political surroundings.    Overwhelming societal concern that has created an ideology of drug use as a    moral ‘problem’. [Drugs reported were limited to amphetamine-type stimulants    (ATS)] | 
      
      
        | 2. | 
        al’Absi    and Mustafa [57] | 
        Neurobiology    of stress addiction and the psychosocial processes | 
        Academic    text with overlapping chapter reviews | 
        Abusing    drugs and experiences of stress act on similar areas in the brain and involve    overlapping neuronal mechanisms | 
      
      
        | 3. | 
        Ana    et al. [26] | 
        Group    Motivational Interviewing (GMI) and Therapist Attention Activity Control    Group (TAACG) | 
        Quasi-experiment | 
        Patients    participated in GMI during inpatient treatment were more frequent in after    care treatment and consumed less alcohol in follow up compared to attendees    of TAACG | 
      
      
        | 4. | 
        Avants    et al. [4] | 
        Socially    anxious drug dependents in low intensity and high intensity psychosocial    treatment programmes (with cocaine). | 
        Quasi    –experiment | 
        Socially    anxious methadone maintained (treatment for cocaine dependence) patients who    stay clean in treatment manage to be abstinent post treatment longer when in    low intensity treatment programmes. They also display less HIV risk taking    behaviours. | 
      
      
        | 5. | 
        Barber    et al. [27] | 
        Supportive    Expressive Dynamic Therapy (SET) and Individual Drug Counselling (IDC) (with    cocaine) | 
        Quasi-experiment | 
        SET    and high levels of IDC had less predicted drug use compared to SET alone.    Straightforward dug counselling is better predictor of outcome compared to    making addicts understand the cause of dependency. | 
      
      
        | 6. | 
        Book    et al. [15] | 
        Social    anxiety and participation in group setting treatment | 
        Experiment | 
        Socially    anxious substance abusers are less willing to attend self help groups,    present with more psychopathology then non- socially anxious substance    abusers. | 
      
      
        | 7. | 
        Chong    and Lopez [42] | 
        Social    network, family, peer support and psychosocial functioning  | 
        Correlational    study | 
        Social    support and family involvement during treatment influences outcome of    treatment to improved psychosocial functioning | 
      
      
        | 8. | 
        Crits-Cristoph    et al. [28] | 
        Psychosocial    treatment with Cognitive Behavioral Therapy (CBT), Supportive Expressive    Therapy (SET), Individual Drug counseling (IDC) and Group Drug Counselling    (GDC) on psychosocial and other addiction associated problems  (with cocaine) | 
        Quasi-experiment | 
        No    significant differences between psychiatric symptoms, employment, medical,    legal, family, social, interpersonal or alcohol consumption problems.    Efficacy of IDC does not extend to treatment of other associated addiction    –related issues.  | 
      
      
        | 9. | 
        Crits-Cristoph    et al. [30] | 
        Psychosocial    treatment - 12 step philosophy as mediator of outcome with IDC+ GDC and CBT    as mediator of outcome with IDC+GDC (with cocaine) | 
        Quasi-experiment | 
        12    step beliefs incorporated with IDC+GDC produces  better treatment outcome compared to CBT    with IDC+GD | 
      
      
        | 10. | 
        Crits-Cristoph    et al. [35] | 
        Supportive    Expressive Dynamic Therapy (SET) and Individual Drug Counselling (IDC) | 
        Quasi-experiment | 
        SET    and high levels of IDC had less predicted drug use compared to SET alone. | 
      
      
        | 11. | 
        False-Stewart    and Bate [58] | 
        Neuropsychological    tests on  participants from Outpatient    Treatment Programme and the Therapeutic Community | 
        Quasi-experiment | 
        Education,    years of alcohol use, number of substance use dependence disorders,    percentage of days of heavy drinking in previous year, depression, familial    alcoholism, pre-morbid level of cognitive functioning, liver functioning and    previous head injuries identified as risk factors for latent cognitive    abilities. | 
      
      
        | 12. | 
        Hesse [24] | 
        Systematic    search of MedLine and PsychInfo | 
        Review | 
        Psychotherapeutic    treatment for co-morbid depression and substance abuse though promising does    not have empirical support as of yet. Treatment of co-morbid anxiety and    substance abuse is not supported empirically either.   | 
      
      
        | 13. | 
        Lash    et al.  [59] | 
        Contracts,    attendance, prompts and reinforces (CPR) & Standard treatment (STX) | 
        Comparison    study | 
        CPR    appears to be more effective in treatment adherence compared to STX | 
      
      
        | 14. | 
        Lemieux    [32] | 
        Social    support and familial support: DV-perception of available social support:    IV-number of visits, letters, length of time in treatment and criminal    history. | 
        Correlational    study | 
        Social    support was significantly associated with the IVs’. Substance abuse treatment    should address environmental factors, social and familial support. | 
      
      
        | 15. | 
        Leshner    [60] | 
        Review    of addiction as a disease | 
        Review | 
        Addiction    as a chronic relapsing disorder with behavioural and social context aspects.    Treatment should incorporate biological, behavioural and social aspects.  | 
      
      
        | 16. | 
        Malhotra    et al.  [5] | 
        Review    of Psychosocial Treatments of Substance Use Disorders in Adolescents (with    cocaine) | 
        Review  | 
        Psychosocial    treatment is effective in treating the addict and his/her family as well. | 
      
      
        | 17. | 
        Smith    and Book  [3] | 
        Review    of anxiety and substance use disorders | 
        Review | 
        Both    anxiety and substance abuse disorder should be treated together. Very few    studies done on integrated treatment approach.  | 
      
      
        | 18. | 
        Vuchinich    et al.  [51] | 
        Behavioural    day treatment, Abstinent- contingent housing & Vocational Training | 
        Correlational    study | 
        There    is a strong relationship between in patient and follow-up abstinence,    independent of the treatment setting | 
      
      
        | 19. | 
        Watkins    et al.  [8] | 
        Review    of treatment for co-occuring affective and substance use disorders | 
        Review | 
        There    is evidence of simultaneous treatment for co morbid disorders and substance    abuse. Pharmacotherapy has influence on outcome but studies lack empirical    evidence on specificity of the treatment |