Confirmatory factor analyses of the alcohol use disorders identification test (AUDIT) among adolescents treated in emergency departments

OBJECTIVE: The Alcohol Use Disorders Identification Test (AUDIT) is a 10-item instrument designed by the World Health Organization to assess problematic drinking. The objective of this study was to conduct confirmatory factor analysis of the AUDIT in a sample of adolescents and young adults who were treated in emergency departments. METHOD: Adolescents and young adults (N= 103, 55 males), ranging in age from 12 to 20.9 years (mean [SD] age = 17.5 [2.1]), completed the AUDIT. Confirmatory factor analyses were conducted using LISREL 8.20 software to test the one-factor, two-factor and three-factor solutions for the AUDIT reported in the literature. RESULTS: Goodness-of-fit indices indicated that a correlated two-factor solution, consisting of a consumption factor and an alcohol-related-problems factor, provides the best fit to the data. The three-factor solution fits the data equally well, but Factor 2 (dependency) and Factor 3 (problems) correlate 1.00. The one-factor solution did not provide a good fit to the data. CONCLUSIONS: Our findings support those of others who have reported that the AUDIT assesses a consumption factor and an alcohol-related problems factor among primary care patients at risk for problematic drinking behavior.     

Exploration of the (Interrater) Reliability and Latent Factor Structure of the Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test (DUDIT) in a Sample of Dutch Probationers

Background: The use of brief, reliable, valid, and practical measures of substance use is critical for conducting individual (risk and need) assessments in probation practice. In this exploratory study, the basic psychometric properties of the Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test (DUDIT) are evaluated. Methods: The instruments were administered as an oral interview instead of a self-report questionnaire. The sample comprised 383 offenders (339 men, 44 women). A subset of 56 offenders (49 men, 7 women) participated in the interrater reliability study. Data collection took place between September 2011 and November 2012. Results: Overall, both instruments have acceptable levels of interrater reliability for total scores and acceptable to good interrater reliabilities for most of the individual items. Confirmatory factor analyses (CFA) indicated that the a priori one-, two- and three-factor solutions for the AUDIT did not fit the observed data very well. Principal axis factoring (PAF) supported a two-factor solution for the AUDIT that included a level of alcohol consumption/consequences factor (Factor 1) and a dependence factor (Factor 2), with both factors explaining substantial variance in AUDIT scores. For the DUDIT, CFA and PAF suggest that a one-factor solution is the preferred model (accounting for 62.61% of total variance). Conclusions: The Dutch language versions of the AUDIT and the DUDIT are reliable screening instruments for use with probationers and both instruments can be reliably administered by probation officers in probation practice. However, future research on concurrent and predictive validity is warranted.     

Factor structure of the Alcohol Use Disorders Identification Test (AUDIT) for men and women in different age groups.

OBJECTIVE: Our main aim was to investigate the factor structure of the Alcohol Use Disorders Identification Test (AUDIT) in a Finnish population sample. METHOD: The AUDIT was completed by 3,125 men (mean age = 26.2 years) and 6,006 women (mean age = 26.1 years). RESULTS: At a cutoff score of 8 or more, 49.8% of the men and 23.9% of the women would be identified as potentially engaged in excessive alcohol use. Exploratory factor analyses suggested a two-factor solution for both men and women. However, the factor structure was not invariant between men and women or in the different age groups among men. CONCLUSIONS: This is one of the largest known general population studies on alcohol use in recent years in Finland. The findings support a two-factor solution, and it is suggested that the AUDIT cutoff scores should be tailored according to age, gender, and drinking culture.     

The structure of cannabis dependence in the community

BACKGROUND: Cannabis is the most widely used illicit drug in developed countries, and has a significant impact on mental and physical health in the general population. However, the validity of common diagnostic schemes and their applicability to cannabis abuse and dependence is poorly understood. This paper describes a confirmatory factor analysis of the DSM-IV cannabis abuse and dependence criteria, using general population data. METHODS: Data from cannabis users (n=722) were obtained from a cross-sectional study of a large and representative sample of the Australian general population. The DSM-IV criteria for cannabis abuse and dependence were assessed using the CIDI-AUTO. RESULTS: Approximately, one in 12 Australians (7.1%) had used cannabis more than five times in the past 12 months and 56.5% of these reported at least one DSM-IV cannabis abuse or dependence criteria. Within the adult population, 2.2% met criteria for a cannabis use disorder (0.7% abuse and 1.5% dependence). Confirmatory factor analysis indicated that both a one- and two-factor model for cannabis use disorder provided an adequate fit to the data. However, the estimated correlation between the abuse and dependence factors in the two-factor model was extremely high (0.99). CONCLUSIONS: A one-factor model provided the most parsimonious model of the cannabis abuse and dependence criteria.     

Validation of the Alcohol Use Identification Test in a Prison Sample Living in the Arabian Gulf Region

The purpose of this study was to assess the utility of the Arabic translation of the Alcohol Use Disorders Identification Test (AUDIT) among a sample of male Muslim prisoners (N = 107) in Dubai, United Arab Emirates (UAE). Confirmatory factor analysis indicated a two-factor model to be the best fit of the data. Good internal reliability (α =.91) and predictive validity were also observed. While the limitations of the study are observed, these promising results suggest that the Arabic version of the AUDIT is a reliable and sound measure of alcohol use disorders among prisoners in the UAE.     

The Chinese version of the drinking-related locus-of-control scale: a confirmatory factor analysis

Internal control beliefs appear to be important factors in recovery from alcoholism. However, no instrument for assessing drinking-related locus of control has been developed in Taiwan. After translating the drinking-related locus-of-control scale (DRIE) into Chinese, we examined the psychometric properties of the Chinese version of the DRIE in alcohol-dependent patients. A total sample of 161 alcohol-dependent patients received treatment for alcoholism in psychiatric hospital outpatient and inpatient units. Confirmatory factor analyses were conducted on three-factor, two-factor, and one-factor measurement models of the DRIE based on prior studies. The results indicated that the one-factor model of the DRIE provided goodness of fit to the data in this study. The Chinese version of the DRIE has been demonstrated to be a reliable and valid tool for the assessment of locus-of-control beliefs in alcohol-dependent patients.     

An examination of the factor structure of the Alcohol Use Disorders Identification Test in two high-risk samples

The Alcohol Use Disorders Identification Test (AUDIT) was examined by employing confirmatory factor analytic techniques to data from two samples collected 1998-1999: college students (n = 465) and court-referred, substance use treatment outpatients (clinical sample; n = 135). Despite the fact that the AUDIT was originally designed as a three-factor measure (consumption, dependence, and consequences), previous studies have lent support to one- and two-factor models. The results of this study support a two-factor model (alcohol consumption and dependence/consequences) in both samples. As further evidence that the two-factor model is appropriate, a psychometric evaluation suggested that the AUDIT generated reliable scores in both groups when used as either a one- or two-factor measure, but not when three scores are derived in the student sample.     

Examination of the latent factor structure of the Alcohol Use Disorders Identification Test in two independent trauma patient groups using confirmatory factor analysis

Recent research on the factor structure of the Alcohol Use Disorders Identification Test (AUDIT) provides support for two underlying factors: consumption and consequences. The current study sought to extend these findings to two independent and diverse trauma populations: traumatic injury patients and military veterans treated for posttraumatic stress disorder. The 2- and 3-factor solutions provided the best fit to the data, but there was a very high correlation between the second and third factors of the 3-factor solution. Parsimony suggests that the 2-factor solution is the preferred model. The 2-factor model has implications for alcohol screening using the AUDIT and supports the goal of screening to identify those with hazardous drinking and alcohol use disorders. An algorithm is proposed to inform alcohol screening protocols in a range of health settings for trauma-exposed patient groups.     

Factor structure and invariance test of the alcohol use disorder identification test (AUDIT): Comparison and further validation in a U.S. and Philippines college student sample

The Alcohol Use Disorder Identification Test’s factor structure varies depending on population and culture. Because of this inconsistency, this article examined the factor structure of the test and conducted a factorial invariance test between a U.S. and a Philippines college sample. Confirmatory factor analyses indicated that a three-factor solution outperforms the one- and two-factor solution in both samples. Factorial invariance analyses further supports the confirmatory findings by showing that factor loadings were generally invariant across groups; however, item intercepts show non-invariance. Country differences between factors show that Filipino consumption factor mean scores were significantly lower than their U.S. counterparts.     

Validation of the Alcohol Use Disorders Identification Test (AUDIT) in urban community outreach and de-addiction center samples in north India

OBJECTIVE: The Alcohol Use Disorders Identification Test (AUDIT) developed by the World Health Organization for screening disorders related to alcohol use has been shown to have robust psychometric properties. This study compared the performance of AUDIT with that of the Short Michigan Alcoholism Screening Test (SMAST) in a region of North India. METHOD: A total of 297 consecutive subjects who had used alcohol in the past year were recruited from a de-addiction center (DAC) (n = 97) and a community outreach setting (n = 200) in West Delhi. Using International Classification of Diseases, Tenth Edition (ICD-10) criteria, the relative effectiveness of the AUDIT and the SMAST in identifying alcohol-use-related disorders was assessed and compared. Internal consistency and interscale correlations were evaluated, along with sensitivity, specificity and ROC curve analyses. RESULTS: The AUDIT had very high internal reliability (alpha 0.92) in this Indian sample. There was, in general, good correlation between the total and factor scores of the AUDIT and SMAST (ranging from 0.28 to 0.97), which were higher in the community than in the DAC sample. The AUDIT (area under the curve [AUC] = 0.883) and SMAST (AUC = 0.870) were similar in detecting harmful use of alcohol. The AUDIT optimal cutoff score was 16 (sensitivity 85.3, specificity 89.4) for ICD-10 harmful use and 24 (sensitivity 69.4, specificity 87.5) for ICD-10 alcohol dependence. CONCLUSIONS: The AUDIT and SMAST seem to be comparable in their ability to screen subjects with alcohol use disorders. The AUDIT score for screening harmful use in the sample appears to be higher than previously reported. The utility of such high cutoff for screening subjects for intervention is obvious, but it is quite likely that some positive cases might be missed.     

An examination of the utility of the AUDIT in people with schizophrenia

OBJECTIVE: To examine the reliability and validity of the Alcohol Use Disorders Identification Test (AUDIT) compared to a structured diagnostic interview, the Composite International Diagnostic Interview (CIDI; 12-month version) in psychiatric patients with a diagnosis of schizophrenia. METHOD: Patients (N = 71, 53 men) were interviewed using the CIDI (Alcohol Misuse Section; 12-month version) and then completed the AUDIT. RESULTS: The CIDI identified 32.4% of the sample as having an alcohol use disorder. Of these, 5 (7.0%) met diagnostic criteria for harmful use of alcohol, 1 (1.4%) met diagnostic criteria for alcohol abuse and 17 (23.9%) met diagnostic criteria for alcohol dependence. The AUDIT was found to have good internal reliability (coefficient = 0.85). An AUDIT cutoff of > or = 8 had a sensitivity of 87% and specificity of 90% in detecting CIDI-diagnosed alcohol disorders. All items except Item 9 contributed significantly to discriminant validity. CONCLUSIONS: The findings replicate and extend previous findings of high rates of alcohol use disorders in people with severe mental illness. The AUDIT was found to be reliable and valid in this sample and can be used with confidence as a screening instrument for alcohol use disorders in people with schizophrenia.     

Readiness for mental health treatment and for changing alcohol use in patients with comorbid psychiatric and alcohol disorders: Are they congruent?

Patients with comorbid psychiatric and alcohol disorders may be ready to change one problem but not the other. This study compared 132 dually diagnosed patients' readiness for mental health treatment to their readiness to change alcohol use. The patients completed a measure of readiness to change alcohol use [the University of Rhode Island Change Assessment Scale-Alcohol (URICA-A)] and the new Readiness for Mental Health Treatment measure. Confirmatory factor analysis (CFA) reveals that the measures have similar factor structures, but correlation and cluster analyses suggest that separate levels of patient motivation exist for mental health treatment and changing alcohol use. The newly developed mental health treatment measure will help clinicians tailor interventions to their patients' needs.     

Utility of the AUDIT for identification of hazardous or harmful drinking in drug-dependent patients

We evaluated the psychometric properties of the alcohol use disorders identification test (AUDIT), a ten-item screening test for identification of hazardous drinkers, in a sample of 82 patients with DSM-III-R drug dependence. AUDIT showed good internal consistency (α = 0.94) and a unitary factor structure. Receiver operating characteristics analysis showed the AUDIT to be comparable to the Michigan alcoholism screening test (MAST) in identifying individuals with a current alcohol use disorder and superior to the MAST for those who are hazardous drinkers. In this patient sample, AUDIT performed well at the recommended cut-off score of ≥ 8. We recommend use of the AUDIT for identification of hazardous and harmful drinking among individuals with a drug use disorder.     

Performance of the Alcohol Use Disorders Identification Test Among Tuberculosis Patients in Russia

The alcohol use disorders identification test (AUDIT), a screening instrument to identify individuals at risk of alcohol use-related problems, has not been validated in a Russian primary care population. We assessed the reliability, factor structure, sensitivity, and specificity of AUDIT scores among 254 subjects initiating tuberculosis treatment from 2005 to 2007 in Tomsk City. Our findings support the use of the AUDIT as a screening instrument among Russian individuals seeking primary care. We discuss implications, limitations, and future research.     

The College Alcohol Problems Scale.

A short, reliable two-factor instrument measuring drinking-related negative consequences was developed from a previous measure using two samples of college students. In Study I, data on alcohol use and problems associated with alcohol use were collected on 382 introductory psychology students. The original College Alcohol Problems Scale (CAPS) was tested and found to fit the data poorly. Sequential methods were used to develop a revised instrument. Principal components analyses (PCA) on half of the sample were conducted on 20 items written to measure negative consequences related to college student drinking. Results indicated a two-factor solution measuring social and emotional problems. Confirmatory factor analyses (CFA) on the other half of the sample confirmed the two-factor structure. Further refinement of the instrument resulted in the revised CAPS (CAPS-r), an eight-item two-factor scale. In Study II, the response format was altered to coincide with the Young Adult Problem Screening Test. A total of 726 students completed the instrument as part of a university-wide random sample. CFA showed that the hypothesized model fit well across all measures of model fit and the factor structure was invariant across gender. Additional analyses revealed that the scale was internally consistent and externally valid. A short reliable and valid measure of alcohol-related problems is needed to enable low-cost data collection on college campuses across the nation, as well as to facilitate program evaluation and routine epidemiological surveillance and monitoring.     

Validation of the Alcohol Use Disorders Identification Test and the Drug Use Disorders Identification Test in a Swedish sample of suspected offenders with signs of mental health problems: Results from the Mental Disorder,Substance Abuse and Crime study

Substance abuse is common among offenders. One method widely used for the detection of substance abuse is screening. This study explored the concurrent validity of the Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test (DUDIT) screening tools in relation to (a) substance abuse and dependency diagnoses and (b) three problem severity domains of the sixth version of the Addiction Severity Index in a sample of 181 suspected offenders with signs of mental health problems. The screening tools showed moderate to high accuracy for identification of dependency diagnoses. The AUDIT was associated with alcohol problem severity, whereas the DUDIT was associated with drug and legal problem severity. Administering the screening tools in the current population yields valid results. However, the suggested cutoff scores should be applied with caution due to the discrepancy between present and previous findings.     

Identifying young people who drink too much: the clinical utility of the five-item Alcohol Use Disorders Identification Test (AUDIT)

The current study investigated the patterns and consequences of alcohol use among young people and their perceptions of associate health risk, and explored the clinical utility of the five-itemversion of the Alcohol Use Disorders Identification Test (AUDIT) in screening young people for hazardous drinking. A cross-sectional sample of 393 young people aged 16-19 years were accessed through two tertiary colleges in South London and self-completed an anonymous, confidential questionnaire recording the five-item AUDIT, patterns of alcohol consumption, hazardous consequences and perception of associate health risk. Over 90% of the sample reported drinking alcohol regularly, commonly excessive weekend use and related physical, psychological and social consequences. A significant minority (20.4% of males, 18.0% of females) reported consumption of alcohol in excess of UKrecommended limits, while almost a third (34.2%of males, 30.2%of females) reported scores in the 'hazardous' range of the five-item AUDIT. However, the majority had little perception of associate health risk, perceiving their use to be 'light' and unproblematic. Only one in 10 of those drinking at 'hazardous' levels recognized their alcohol use as problematic, most believing the hazardous consequences of this use were acceptable. Self-reported patterns of alcohol consumption (except age first used) and total number of psychological and social hazardous consequences were found to significantly predict AUDIT scores using linear regression analysis. Therefore the five-item AUDIT appears to have predictive validity, reflecting self-reported alcohol consumption, perception of associate health risk and hazardous consequences among young people. It is concluded that it may consequently have clinical utility as a simple screening tool (suitable for use by a variety of professionals in contact with young people) for the identification of hazardous alcohol consumption among this population. \[Miles H, Winstock A, Strang J. Identifying young people who drink too much: the clinical utility of the five-item Alcohol Use Disorders Identification Test (AUDIT). Drug Alcohol Rev 2001:20:9-18]     

Is frequency of drinking an indicator of problem drinking? A psychometric analysis of a modified version of the alcohol use disorders identification test in Switzerland.

BACKGROUND: To study the psychometric properties of a modified Alcohol Use Disorders Identification Test in the multilingual context of Switzerland. METHODS: Data were obtained from the most extensive health survey to date in Switzerland, with a response rate of 69%. Seven core items of AUDIT were used. The first two items of AUDIT (frequency of drinking, quantity of drinking) were not used in their original form, but reconstructed from a quantity-frequency instrument (QF) measuring alcohol consumption, and categorized according to the AUDIT. The third AUDIT item (frequency of binge drinking) was similarly not used in its original form, but 8+ drinks instead of 6+ drinks was used. All 10 items of the modified AUDIT were completed by 10321 subjects - 6677 in the German-speaking region and 3644 in the Latin-language (French, Italian) regions. The dimensionality of the modified AUDIT was modelled by confirmatory factor analysis. The contribution of each item to the total modified AUDIT score was investigated by the prevalence of positively screened subjects when items were deleted, and factor loadings of the unidimensional model. RESULTS: In Switzerland the modified AUDIT fitted neither a unidimensional nor the hypothesized tri-dimensional model. Consumption items, especially frequency of drinking, showed almost no correlation with items measuring alcohol-related problems, but the latent constructs 'harmful drinking' and 'alcohol dependence' were highly correlated, indicating a shared underlying factor. Frequency of drinking was the item that most influenced whether an individual screened positively or not. Except for the correlation of frequency and binge drinking, results were almost identical for both linguistic regions. CONCLUSIONS: The current form of the modified AUDIT may have to be changed for screening in Switzerland, as the study raised questions about the suitability of the frequency-of-drinking item as an indicator of a screening device for alcohol-related problems in this country.     

Readiness to change in adults waiting for publicly funded substance abuse treatment

The primary objective of this study was to evaluate the factor structure of a modified version of the Stages of Change Readiness and Treatment Eagerness Scale (SOCRATES) for a sample of indigent adults with alcohol and other drug problems. A community sample of 338 adults on waiting lists for entrance into publicly funded substance abuse treatment completed a 19-item modified version of the SOCRATES. Confirmatory factor analyses were conducted on two structural models of the SOCRATES based on prior literature. The results indicated that a two-factor model of the SOCRATES provided the best fit for the data in this study. Suggestions for future research using a modified version of this measure are discussed.     

Brief alcohol screening in a clinical psychiatric population: special attention needed

Introduction and Aims. Abbreviated versions of the Alcohol Use Disorders Identification Test (AUDIT) and single‐item screeners show promising results but have not previously been investigated in a clinical psychiatric setting. The aim of the present study was to investigate the capacity of three brief screening methods to detect hazardous drinking in a psychiatric treatment‐seeking population. Design and Methods. Data were collected from consecutive patients (n = 1811) visiting a general psychiatric clinic. The screening capacity of the heavy episodic drinking (HED) screener, AUDIT item # 3 (AUDIT‐3) and the three consumption items of AUDIT (AUDIT‐C) was compared to the result of the full 10‐item AUDIT with cut‐off points 6 for women and 8 for men. Results. The HED screener and AUDIT‐3 with recommended cut‐offs captured low rates of hazardous drinkers when compared to the full AUDIT. Lowering the cut‐offs created rates far above those of the full AUDIT. AUDIT‐C with recommended cut‐off limits categorised nearly the same rates of men as the full AUDIT but much higher rates of women. Raising the cut‐off for women approached the detection rate of AUDIT‐C closely to that of the full AUDIT. Discussion and Conclusions. The findings of this study suggest that the HED screener is not sensitive enough in the clinical psychiatric setting. When designing alcohol screening measures to be used all over health‐care organisations, special attention should be paid to psychiatric patients. If a somewhat more extensive screening tool is used, the full AUDIT is recommended.[Nehlin C, Fredriksson A, Jansson L. Brief alcohol screening in a clinical psychiatric population: Special attention needed. Drug Alcohol Rev 2012;31:538–543]