Have a question about this calculator? Get a detailed answer.
The Geriatric Depression Scale (GDS) is a self-report screening instrument developed in 1982 by Dr. Jerome Yesavage and colleagues at Stanford University specifically for detecting depression in elderly adults. The original 30-item version (GDS-30) was subsequently shortened to a 15-item version (GDS-15) by Sheikh and Yesavage in 1986, which has become the most widely used version in clinical practice due to its brevity and comparable diagnostic accuracy. The GDS was designed to address the unique challenges of assessing depression in older adults, particularly the overlap between depressive symptoms and normal aging processes. Unlike other depression scales that include somatic symptoms such as sleep disturbance, fatigue, appetite changes, and decreased libido, the GDS focuses on the psychological and motivational aspects of depression. This design choice is critical for the elderly population because somatic complaints are highly prevalent among older adults due to medical comorbidities and normal physiological aging, and including them would produce unacceptably high false-positive rates. The GDS uses a simple yes or no response format rather than the graded severity scales used in instruments like the PHQ-9, making it easier for elderly individuals with cognitive or visual impairments to complete. The GDS-15 has been validated across diverse elderly populations and settings including community-dwelling older adults, nursing home residents, hospitalized patients, and primary care patients. At the standard cutoff of 5 or higher, the GDS-15 demonstrates sensitivity of approximately 92 percent and specificity of approximately 89 percent for major depression. It takes approximately 5 to 7 minutes to complete and can be self-administered or clinician-administered. Depression in the elderly is both common and frequently undetected. Approximately 15 percent of community-dwelling older adults and up to 25 to 30 percent of nursing home residents have clinically significant depression. Yet depression in the elderly is often dismissed as a normal part of aging or masked by the presentation of somatic complaints, cognitive decline, or behavioral changes. The GDS provides a standardized method for detecting depression that might otherwise go unrecognized in a population at elevated risk for suicide, functional decline, and mortality.
GDS-15 Score = Sum of all 15 items (each scored 0 or 1) Scoring: - Items 1, 5, 7, 11, 13: 'No' = 1 point (depressive response) - Items 2, 3, 4, 6, 8, 9, 10, 12, 14, 15: 'Yes' = 1 point (depressive response) Worked Example: An 78 year old patient responds to the GDS-15: 1. Are you basically satisfied with your life? No (1) 2. Have you dropped many of your activities and interests? Yes (1) 3. Do you feel that your life is empty? Yes (1) 4. Do you often get bored? Yes (1) 5. Are you in good spirits most of the time? No (1) 6. Are you afraid that something bad is going to happen to you? No (0) 7. Do you feel happy most of the time? No (1) 8. Do you often feel helpless? Yes (1) 9. Do you prefer to stay at home rather than go out and do new things? Yes (1) 10. Do you feel you have more problems with memory than most? No (0) 11. Do you think it is wonderful to be alive now? Yes (0) 12. Do you feel pretty worthless the way you are now? Yes (1) 13. Do you feel full of energy? No (1) 14. Do you feel that your situation is hopeless? No (0) 15. Do you think that most people are better off than you? Yes (1) GDS-15 Score = 1+1+1+1+1+0+1+1+1+0+0+1+1+0+1 = 11 Interpretation: A score of 11 indicates severe depression (10-15 range). This patient endorses symptoms across multiple domains including anhedonia, emptiness, boredom, helplessness, worthlessness, social withdrawal, and unfavorable comparison to others. Comprehensive psychiatric evaluation and treatment initiation are recommended.
- 1Determine Appropriateness of the GDS-15 for the Patient: The GDS-15 is appropriate for adults aged 65 and older who are cognitively intact or have only mild cognitive impairment. For patients with moderate to severe cognitive impairment (Mini-Mental State Examination score below 15, or equivalent), the GDS loses reliability because patients may not be able to accurately assess and report their mood states. In these cases, observational depression scales such as the Cornell Scale for Depression in Dementia (CSDD) or the Dementia Mood Assessment Scale (DMAS) should be used instead. Before administering the GDS, briefly assess the patient's ability to understand the questions and respond meaningfully.
- 2Administer in an Appropriate Setting and Format: Present the GDS-15 in a quiet, private setting with adequate lighting and minimal distractions. For self-administration, provide the questionnaire in large print (14-point font or larger) to accommodate age-related visual changes. Allow adequate time; elderly patients may need 7 to 10 minutes rather than the 5 minutes needed by younger adults. For patients who cannot self-administer due to visual impairment, arthritis limiting writing ability, or low literacy, the clinician can read the questions aloud. Emphasize that responses should reflect how the patient has felt over the past week, and that there are no right or wrong answers.
- 3Score Each Item Using the Correct Scoring Key: The GDS-15 uses a two-directional scoring system where some items are scored 1 for 'yes' and others are scored 1 for 'no.' Items 1, 5, 7, 11, and 13 are positively worded (indicating non-depression), so a 'no' response earns 1 point. Items 2, 3, 4, 6, 8, 9, 10, 12, 14, and 15 are negatively worded (indicating depression), so a 'yes' response earns 1 point. This bidirectional scoring reduces response set bias where a patient might habitually answer 'yes' or 'no' to all questions without reading them carefully. However, it is the primary source of scoring errors and must be double-checked.
- 4Calculate the Total Score and Classify Severity: Sum all 15 item scores for the total GDS-15 score (range 0-15). Classify using the standard three-level system: 0 to 4 indicates normal (no significant depression), 5 to 9 indicates mild depression or possible depression warranting clinical evaluation, and 10 to 15 indicates moderate to severe depression requiring comprehensive psychiatric assessment and treatment. Some guidelines use a two-level system with a single cutoff of 5 or higher as a positive screen. The three-level system provides more clinical utility for treatment planning.
- 5Assess for Suicidal Ideation: Although the GDS-15 does not include a specific suicide item, depression in the elderly carries a particularly high suicide risk. Older adults, especially white males over 85, have the highest suicide rates of any demographic group. When the GDS-15 score is 5 or higher, always follow up with direct questions about suicidal ideation: 'Do you sometimes feel that life is not worth living?' 'Have you had thoughts of ending your life?' 'Have you made any plans to harm yourself?' The endorsement of items 12 (worthlessness) and 14 (hopelessness) should increase clinical concern for suicide risk.
- 6Consider Differential Diagnoses: An elevated GDS-15 score in an elderly patient requires consideration of several differential diagnoses. Medical conditions that can mimic depression include hypothyroidism, vitamin B12 deficiency, anemia, chronic pain syndromes, Parkinson disease, and early dementia. Medications commonly used in the elderly that can cause depressive symptoms include beta-blockers, corticosteroids, benzodiazepines, and some antihypertensives. Grief following the loss of a spouse, friends, or functional independence may present similarly to depression. A comprehensive medical evaluation including thyroid function, vitamin B12, complete blood count, and medication review should accompany the GDS-15 assessment.
- 7Develop an Age-Appropriate Treatment Plan: Treatment for geriatric depression must account for the unique physiological and psychosocial context of aging. For mild depression (GDS-15 score 5-9), first-line interventions include behavioral activation (increasing pleasurable activities and social engagement), structured exercise programs (shown to be as effective as antidepressants for mild geriatric depression), psychotherapy (cognitive behavioral therapy and problem-solving therapy have the strongest evidence base in the elderly), and addressing modifiable contributing factors such as social isolation, pain, and functional limitations. For moderate to severe depression (GDS-15 score 10-15), pharmacotherapy is typically needed in addition to psychotherapy. SSRIs are first-line, with sertraline and escitalopram preferred due to fewer drug interactions. Start low and go slow with dosing.
This 72 year old retired teacher maintains an active social life, volunteers at a local library, and exercises regularly. The GDS-15 score of 0 confirms the clinical impression of good mental health. Routine rescreening at annual wellness visits is appropriate.
This 80 year old widower lost his wife of 55 years 4 months ago and has since withdrawn from his bridge club, stopped attending church, and rarely leaves the house. His score of 8 indicates mild depression. The clinical picture is consistent with both grief and clinical depression. A 'watchful waiting' approach with weekly phone calls, encouragement to re-engage in social activities, and a grief support group referral is initiated. The GDS-15 is repeated in 4 weeks.
This 88 year old nursing home resident endorses every depressive item on the GDS-15, achieving the maximum score. She was admitted to the nursing home 2 months ago following a hip fracture and reports feeling she has lost all independence. The combination of maximum depression score, endorsement of hopelessness and worthlessness, and expressed wish that she was no longer alive constitutes high suicide risk. Immediate psychiatric consultation, one-to-one observation, medication review, and initiation of antidepressant therapy with close monitoring are required.
Annual Wellness Visits and Medicare Screening: In the United States, the Medicare Annual Wellness Visit provides an opportunity for systematic depression screening in older adults. The GDS-15 is one of the most commonly used instruments for this purpose. The Centers for Medicare and Medicaid Services recognizes depression screening as a covered preventive service. Primary care practices that incorporate the GDS-15 into their annual wellness visit workflows report depression detection rates 3 to 4 times higher than practices relying on clinical impression alone, leading to earlier treatment and better outcomes.
Nursing Home Quality Assessment: The GDS-15 is widely used in nursing home and assisted living facility quality improvement programs. The Minimum Data Set (MDS) required for all nursing home residents includes depression screening, and the GDS-15 is a common tool used to supplement the MDS depression items. Facilities that implement systematic GDS-15 screening have identified that 25 to 30 percent of residents have undetected depression, leading to treatment changes that improve quality of life, reduce behavioral disturbances, and decrease the use of inappropriate psychotropic medications.
Post-Stroke Depression Screening: Depression affects approximately 30 to 33 percent of stroke survivors and is associated with worse rehabilitation outcomes, increased mortality, and decreased quality of life. The GDS-15 has been validated for post-stroke depression screening in patients without severe aphasia or cognitive impairment. Stroke rehabilitation programs that incorporate routine GDS-15 screening at admission, during rehabilitation, and at discharge identify significantly more cases of depression than those relying on clinical observation alone, enabling earlier intervention that improves functional recovery.
Geriatric Emergency Department Assessment: Emergency departments are increasingly recognizing the importance of screening elderly patients for depression, particularly those presenting with falls, failure to thrive, medication non-adherence, or frequent emergency visits. The GDS-15 can be administered during the emergency department visit while awaiting test results. Studies in geriatric emergency medicine show that approximately 20 percent of elderly ED patients screen positive for depression on the GDS-15, and that the majority of these patients were not previously identified or treated. This creates an opportunity for emergency department-initiated intervention and referral.
When screening elderly patients who are recently bereaved, distinguishing
When screening elderly patients who are recently bereaved, distinguishing between normal grief and major depression can be challenging. The DSM-5 removed the bereavement exclusion for major depression, recognizing that grief and depression can coexist. An elevated GDS-15 score in a recently bereaved elder should prompt clinical assessment for features that suggest depression beyond normal grief, including persistent feelings of worthlessness, suicidal ideation, marked psychomotor retardation, prolonged and marked functional impairment, and hallucinatory experiences not related to the deceased. Elderly patients with Parkinson disease present a particular screening challenge because the motor symptoms of Parkinson (masked facial expression, psychomotor slowing, fatigue, sleep disturbance) overlap with depressive symptoms. Depression affects approximately 40 percent of Parkinson disease patients and significantly worsens quality of life. The GDS-15 has been validated in Parkinson populations and is considered one of the better screening tools for this group because its exclusion of somatic symptoms reduces confounding by motor symptoms. For elderly patients who are hearing impaired, visual presentation of the GDS-15 is essential. Shouting questions about depression in a clinical setting compromises privacy and may embarrass the patient into providing socially desirable responses. Large-print written versions, tablet-based administration with adjustable font size, or hearing-loop assisted administration should be used. For patients with severe hearing and visual impairment, a clinical interview assessing depressive symptoms through adapted communication methods may be necessary in lieu of the standardized questionnaire.
| Score Range | Classification | Prevalence in Elderly | Clinical Action | Treatment Approach |
|---|---|---|---|---|
| 0-4 | Normal (no depression) | ~70% community-dwelling | Routine monitoring | Annual rescreening |
| 5-9 | Mild depression | ~15% community-dwelling | Clinical evaluation, possible treatment | Behavioral activation, psychotherapy, consider medication |
| 10-15 | Moderate to severe depression | ~10-15% community-dwelling | Comprehensive psychiatric assessment | Combined psychotherapy and pharmacotherapy |
| 5+ with comorbid dementia | Depression in dementia | ~30-50% dementia patients | Use CSDD instead, treat depression | SSRIs, environmental modifications, caregiver support |
| Any score + hopelessness | Elevated suicide risk | Variable | Immediate safety assessment | Safety planning, close monitoring, possible hospitalization |
Why does the GDS use yes/no questions instead of a severity scale?
The yes/no format was a deliberate design choice by Yesavage and colleagues. They found that older adults, particularly those with mild cognitive impairment or lower education levels, had difficulty with the graded response options used in other depression scales (such as 'not at all,' 'several days,' 'more than half the days,' 'nearly every day'). The binary format reduces cognitive demand, minimizes confusion, and produces more reliable responses in the target population. Research comparing the GDS to instruments with graded responses shows comparable diagnostic accuracy, indicating that the simplicity of the yes/no format does not sacrifice clinical utility.
Can the GDS-15 be used for adults younger than 65?
The GDS was developed for and validated in adults aged 65 and older. While it can technically be administered to younger adults, its psychometric properties have not been established in younger populations, and the item content reflects concerns more relevant to older adults (such as 'Do you think it is wonderful to be alive now?' and 'Do you prefer to stay at home rather than go out?'). For adults under 65, the PHQ-9 or Beck Depression Inventory are more appropriate screening instruments. An exception may be younger adults with medical conditions that cause somatic symptoms, where the GDS's exclusion of somatic items could be advantageous.
How often should the GDS-15 be repeated?
For routine screening, annual administration at the wellness visit is the minimum recommended frequency. For patients identified with depression who are receiving treatment, repeat administration every 4 to 6 weeks allows monitoring of treatment response. A decrease of 3 or more points on the GDS-15 is generally considered a clinically meaningful improvement. For patients in long-term care facilities, quarterly screening is recommended by many quality improvement programs. For patients with risk factors for depression (recent bereavement, new chronic illness, increasing functional dependence, social isolation), more frequent screening may be warranted.
What is the relationship between depression and dementia in the elderly?
Depression and dementia have a complex bidirectional relationship. Late-life depression is a risk factor for developing dementia: meta-analyses suggest that depression approximately doubles the risk of dementia. Depression can also be an early symptom or prodrome of dementia, sometimes preceding cognitive decline by years. Depressive pseudodementia is a condition where depression causes cognitive symptoms (poor concentration, memory complaints, psychomotor slowing) that mimic dementia but resolve with depression treatment. The GDS-15 can help differentiate between these scenarios when combined with cognitive testing. A patient with a high GDS-15 and mild cognitive impairment should receive depression treatment first, followed by cognitive reassessment.
Are there medications to avoid when treating depression in the elderly?
Several antidepressant classes should be used cautiously or avoided in elderly patients. Tricyclic antidepressants (amitriptyline, nortriptyline) have anticholinergic effects that can worsen cognitive function, cause constipation and urinary retention, and increase fall risk through orthostatic hypotension. They are listed on the Beers Criteria of potentially inappropriate medications for older adults. MAO inhibitors require dietary restrictions that may be difficult for elderly patients to follow. Among SSRIs, paroxetine has the strongest anticholinergic effects and should be avoided. Sertraline and escitalopram are generally preferred first-line agents due to fewer drug interactions and minimal anticholinergic activity. Mirtazapine may be useful when appetite stimulation and sedation are desired.
How does the GDS-15 perform in different ethnic and cultural groups?
The GDS-15 has been translated and validated in numerous languages and cultural contexts including Spanish, Chinese, Korean, Japanese, Arabic, Hindi, Portuguese, and many others. Cross-cultural validation studies generally confirm acceptable psychometric properties, though optimal cutoff scores may vary by population. Some cultural adaptations have been necessary: for example, the concept of 'being in good spirits' may not translate directly into all languages. In some cultures, somatic expressions of depression (pain, fatigue) may be more common than the psychological symptoms assessed by the GDS, potentially leading to false-negative results. Clinicians should be aware of culturally specific expressions of depression in their patient populations.
Pro Tip
Pay close attention to the pattern of endorsed items, not just the total score. An elderly patient who scores 6 primarily on items related to social withdrawal (dropped activities, prefers to stay home, not in good spirits, not happy) may respond well to behavioral activation and social engagement interventions alone. A patient who scores 6 primarily on items related to cognitive-emotional disturbance (worthlessness, hopelessness, life is empty) may have a more severe underlying depression that requires pharmacotherapy despite the apparently mild total score.
Did you know?
Dr. Jerome Yesavage, the creator of the GDS, chose to use yes/no questions after observing elderly patients in his Stanford clinic struggling with the multi-point scales used in existing depression questionnaires. Some patients would spend several minutes deliberating between 'sometimes' and 'often,' causing frustration and fatigue. One patient reportedly told him, 'Just ask me yes or no, I can answer that.' This patient feedback directly shaped the design of what would become one of the most widely used geriatric assessment tools in the world.
References
- ›Development and Validation of a Geriatric Depression Screening Scale: A Preliminary Report - Yesavage et al., Journal of Psychiatric Research, 1982
- ›Geriatric Depression Scale (GDS): Recent Evidence and Development of a Shorter Version - Sheikh and Yesavage, Clinical Gerontologist, 1986
- ›Depression in Older Adults - National Institute of Mental Health
Get Weekly Math Tips
Join 12,000+ subscribers who get calculator tips every week.