CAGE Score Calculator

Screen for alcohol use disorder using the 4-question CAGE questionnaire. Enter values for instant results with step-by-step formulas.

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Formula

CAGE Score = C + A + G + E (each 0 or 1, total 0-4)

Each question is scored as 0 (No) or 1 (Yes). C = Cut down, A = Annoyed, G = Guilty, E = Eye-opener. A total score of 2 or more is considered clinically significant for alcohol use disorder screening.

Worked Examples

Example 1: Patient with Two Positive CAGE Responses

Problem: A 45-year-old male patient answers yes to feeling he should Cut down on his drinking and yes to feeling Guilty about his drinking. The other two questions are answered no.

Solution: CAGE Score = C(1) + A(0) + G(1) + E(0) = 2\nA score of 2 or more is clinically significant.\nSensitivity at this cutoff: ~86%\nSpecificity at this cutoff: ~93%\nPositive screen indicates need for further evaluation.

Result: CAGE Score: 2 (Clinically Significant) - Further assessment with full AUDIT recommended

Example 2: Patient with All Four Positive Responses

Problem: A 52-year-old female patient answers yes to all four CAGE questions: she has felt she should cut down, been annoyed by criticism of her drinking, felt guilty, and had morning eye-opener drinks.

Solution: CAGE Score = C(1) + A(1) + G(1) + E(1) = 4\nA perfect score of 4 indicates very high probability of alcohol dependence.\nThe Eye-opener response is particularly concerning as it suggests physical dependence.\nAll four domains of problematic drinking are affected.

Result: CAGE Score: 4 (Very High Probability) - Immediate comprehensive assessment and specialist referral recommended

Frequently Asked Questions

What is the CAGE questionnaire and how is it used in clinical practice?

The CAGE questionnaire is a widely used four-question screening tool designed to identify potential alcohol use disorders in clinical settings. The acronym CAGE stands for Cut down, Annoyed, Guilty, and Eye-opener, representing the four key questions asked. Developed by Dr. John Ewing in 1984, it has become one of the most commonly administered alcohol screening instruments worldwide. Clinicians use it during routine health assessments, emergency department visits, and pre-surgical evaluations to quickly identify patients who may benefit from further evaluation or intervention for problematic drinking patterns.

What does each letter in CAGE stand for and why were these questions chosen?

Each letter in CAGE represents a specific question targeting different aspects of problematic alcohol use. C stands for Cut down, asking if the person has felt they should reduce their drinking. A stands for Annoyed, inquiring about irritation from others criticizing their drinking habits. G stands for Guilty, exploring feelings of guilt related to alcohol consumption. E stands for Eye-opener, asking about morning drinking to relieve hangover symptoms. These four questions were selected because they capture the psychological, social, and physiological dimensions of alcohol dependence in a concise format that takes less than one minute to administer.

What CAGE score is considered clinically significant for alcohol use disorder?

A CAGE score of 2 or higher out of 4 is generally considered clinically significant and suggestive of an alcohol use disorder. At this cutoff, the CAGE questionnaire demonstrates a sensitivity of approximately 86 percent and a specificity of approximately 93 percent for identifying alcohol problems. A score of 1 may still warrant further discussion, particularly in populations with higher prevalence of alcohol use disorders. Some clinicians use a lower threshold of 1 positive response in certain populations such as pregnant women or trauma patients, where even mild alcohol misuse carries significant risk.

Can the CAGE questionnaire be used in all patient populations?

While the CAGE is widely applicable, it has certain limitations across different populations. Research suggests it may be less sensitive in women, younger adults, and elderly patients compared to middle-aged men, for whom it was originally validated. Cultural factors can also affect response patterns, as norms around drinking and willingness to disclose vary across cultures. In pregnant populations, a lower threshold score of 1 is often recommended due to the severity of fetal alcohol spectrum disorders. The CAGE has been validated in multiple languages and cultural settings, but clinicians should consider supplementing it with population-specific tools when screening diverse patient groups.

What are the limitations of the CAGE screening tool?

The CAGE questionnaire has several important limitations that clinicians should understand. It does not quantify the amount or frequency of alcohol consumption, so it cannot distinguish between different levels of drinking severity. Because it asks about lifetime experiences, it may produce positive results in individuals who previously had problems but are now in recovery. It is less effective at detecting binge drinking patterns or hazardous use that has not yet progressed to dependence. The yes-or-no format lacks nuance, and patients may underreport symptoms due to stigma or denial. For these reasons, a positive CAGE screen should always be followed by a more comprehensive clinical assessment.

How should clinicians interpret and act on CAGE results?

Clinicians should interpret CAGE results within the broader clinical context rather than relying solely on the numeric score. A score of zero generally indicates low risk, but clinicians should still ask about current drinking patterns. A score of 1 suggests possible risk and warrants brief counseling and follow-up at the next visit. Scores of 2 or higher indicate a positive screen that requires comprehensive assessment, which may include the full AUDIT questionnaire, laboratory tests such as liver function panels, and a detailed clinical interview. Appropriate interventions range from brief motivational interviewing for lower scores to referral for specialized addiction treatment for higher scores.