Alcohol Dependence Data Questionnaire (SADD)

Abstract

The Alcohol Dependence Data Questionnaire (SADD) is a concise, 15-item self-report screening instrument developed by Raistrick, Dunbar, and Davidson in 1983. Its primary function is to measure the severity of alcohol dependence in clinical and research populations. The SADD provides a total score ranging from 0 to 45, which correlates directly with established levels of dependence severity, allowing clinicians to quickly categorize individuals into low, medium, or high dependence groups. This makes it a valuable tool for initial assessment and tracking treatment progress in substance use disorder settings.

Keywords

alcohol dependence, SADD, screening instrument, addiction, substance use disorder, severity assessment, psychometric properties, Raistrick.

Authors

Raistrick, D., Dunbar, G., & Davidson, R.

Purpose

The core purpose of the SADD is to provide a rapid, quantitative measure of the degree of dependence on alcohol. Unlike instruments focused merely on identifying problematic drinking, the SADD assesses the intensity of dependence symptoms across behavioral, psychological, and physiological domains. This detailed measurement is crucial for tailoring intervention strategies, as the level of dependence often dictates the complexity and required intensity of treatment.

The instrument was designed to be easily administered and scored, making it highly practical for busy clinical environments, including primary care settings, addiction clinics, and epidemiological research. The resulting score offers immediate clinical utility by classifying patients into relevant treatment pathways based on their dependence severity.

Construct

The SADD measures the psychological construct of alcohol dependence, which encompasses compulsive alcohol-seeking behavior, tolerance, and withdrawal symptoms upon cessation. The 15 items are structured to capture key features associated with the clinical definition of dependence prevalent during its development, aligning conceptually with criteria later formalized in diagnostic manuals like the DSM and ICD.

The items probe areas such as loss of control, preoccupation with drinking, continued use despite harm, and physical withdrawal signs (e.g., morning shakes or vomiting). By covering these dimensions, the SADD ensures a comprehensive assessment of the physiological adaptation and cognitive prioritization that characterize severe alcohol use disorder.

Validity

Initial validation studies for the SADD focused heavily on its criterion and concurrent validity. Researchers established that the scale scores correlated significantly with established indices of alcohol problems, such as length of drinking history, severity of consequences reported by patients, and clinical diagnoses made by independent addiction specialists. The scale demonstrated good content validity, as its items were derived from clinical observation and existing theoretical models of addiction.

Furthermore, the SADD has been shown to successfully discriminate between clinical groups—such as heavy social drinkers, harmful drinkers, and those meeting criteria for severe dependence—confirming its utility as a robust measure of severity rather than just presence of alcohol use.

Reliability

The SADD exhibits strong internal consistency, a key measure of psychometric properties. Studies have consistently reported high Cronbach’s alpha values (often above 0.90), indicating that the 15 items measure a common underlying construct (alcohol dependence) effectively. This high reliability suggests that the questionnaire is highly consistent in how it measures the severity of symptoms.

Additionally, the scale has demonstrated acceptable test-retest reliability, suggesting that when administered to individuals whose dependence status has not changed over a short period, the scores remain stable. This stability is essential for using the SADD to track changes in dependence levels over the course of treatment.

Factor Analysis

Early factor analysis conducted on the SADD often suggested a predominantly unifactorial structure. This finding supports the scale’s design, confirming that the 15 items largely contribute to a single, overarching dimension of “severity of alcohol dependence.”

While some subsequent analyses have occasionally identified minor sub-factors (such as one related to physical withdrawal symptoms and another related to psychological preoccupation or loss of control), the dominant interpretation remains that the total score is the most clinically meaningful output, representing a global measure of the addiction syndrome.

Instrument

Test Type: Self-report screening questionnaire

Format: 15 items, scored using a 4-point Likert scale (1=Never, 2=Sometimes, 3=Often, 4=Nearly Always). Total score ranges from 15 to 60 (or 0 to 45 if scores are adjusted to start from 0).

Language Available: Primarily English, with translations available in several European languages.

Population Group: Clinical and non-clinical adults.

Age Group: Typically 18 years and older.

Population Details: Used widely in populations seeking treatment for alcohol use disorder, as well as in epidemiological studies assessing prevalence and severity in the general population.

Test Methodology: Self-administered paper-and-pencil or digital questionnaire. Scoring involves summing the item responses. Interpretation is based on cutoff scores: 1-9 (low dependence), 10-19 (medium dependence), and 20 or greater (high dependence).

Keywords

alcohol screening, dependence severity, clinical assessment, addiction questionnaire, physical dependence, psychological dependence, substance abuse.

Authors

Author ORCID Identifier: N/A (Information not provided in source material)

Affiliation Email addresses: N/A (Information not provided in source material)

Correspondence Address: N/A (Information not provided in source material)

Permissions & Fee and Test Year

The Alcohol Dependence Data Questionnaire (SADD) was developed in 1983. It is often used freely in academic research and clinical practice, though users should confirm current licensing agreements with the original publishers or authors for commercial applications. The instrument can be found referenced and sometimes reproduced by various health organizations.

The instrument is referenced by the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA). The instrument can be found at: http://www.emcdda.europa.eu/html.cfm/index3556EN.html

Reference’s

• Raistrick, D., Dunbar, G., & Davidson, R. (1983). Development of a questionnaire to measure alcohol dependence. British Journal of the Addiction, 78, 89-95.

Items of the Alcohol Dependence Data Questionnaire (SADD)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

• 1. Do you rind difficulty in getting the thought of drinking out of your mind?
• 2. Is getting drunk more important than your next meal?
• 3. Do you plan your day around when and where you can drink?
• 4. Do you drink in the morning, afternoon and evening?
• 5. Do you drink for the effect of alcohol without caring what the drink is?
• 6. Do you drink as much as you want irrespective of what you are doing the next day?
• 7. Given that many problems might be caused by alcohol do you still drink too much?
• 8. Do you know that you won’t be able to stop drinking once you start?
• 9. Do you try to control your drinking by giving it up completely for days or weeks at a time?*
• 10. The morning after a heavy drinking session do you need your first drink to get yourself going?
• 11. The morning after a heavy drinking session do you wake up with a definite shakiness of your hands?
• 12. After a heavy drinking session do you wake up and retch or vomit?
• 13. The morning after a heavy drinking session do you go out of your way to avoid people?
• 14. After a heavy drinking session do you see frightening things that later you realize were imaginary?
• 15. Do you go drinking and the next day rind you have forgotten what happened the night before?