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Printed on 7/20/2026
For informational purposes only. This is not medical advice.
The Short Portable Mental Status Questionnaire (SPMSQ), also known as Pfeiffer's questionnaire, is a brief cognitive screen based on number of errors across orientation and calculation-type items. It is commonly interpreted with education-adjusted error thresholds.
Formula: SPMSQ is interpreted by total error count (0-10), with optional education-based adjustment.
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The SPMSQ consists of 10 orally administered questions covering orientation and recall: (1) What is today's date — month, day, year? (2) What day of the week is it? (3) What is the name of this place? (4) What is your telephone number or street address? (5) How old are you? (6) When were you born — month, day, year? (7) Who is the current president? (8) Who was the president before? (9) What was your mother's maiden name? (10) Subtract 3 from 20 and keep subtracting 3 from each new number. No writing or paper is required. The entire test typically takes 3 to 5 minutes. Each incorrect answer is counted as one error.
After scoring, apply Pfeiffer's education adjustment before interpreting the result. Allow one additional error for patients who did not complete grade school education. Subtract one error for patients with post-high school education (college or beyond). This adjustment reflects the well-established relationship between educational attainment and performance on orientation and recall tasks. Document the education level used for adjustment so that future assessors can reproduce the interpretation and track cognitive changes accurately.
After education adjustment, apply the four Pfeiffer error bands: 0–2 errors = intact cognitive function (normal screen); 3–4 errors = mild cognitive impairment — indicates need for further evaluation; 5–7 errors = moderate cognitive impairment — strongly supports referral for comprehensive cognitive and functional assessment; 8–10 errors = severe cognitive impairment — requires urgent further evaluation and care planning. A positive screen (3+ errors adjusted) should trigger formal cognitive evaluation, delirium assessment, functional assessment, laboratory workup (thyroid, B12, metabolic panel), and neuroimaging if indicated.
Family physicians, internists, nurse practitioners
The SPMSQ is one of the fastest structured cognitive screens available, requiring no paper, no props, and typically under 5 minutes to administer. In primary care, it serves as a first-line cognitive triage tool for patients presenting with memory complaints, caregiver concerns, or functional decline. The error-count format is immediately interpretable without scoring tables. For patients who score 3+ errors, the SPMSQ provides objective documentation of cognitive concern to support referral for comprehensive neuropsychological testing, geriatric consultation, or dementia workup.
Geriatric primary care, memory clinic nurses, community health workers
The SPMSQ is well-suited to annual or periodic cognitive surveillance in older adults because it is brief, does not require equipment, and produces a quantitative error count that facilitates longitudinal tracking. A patient who scores 1 error at age 72, 2 errors at age 74, and 4 errors at age 76 shows a clear trajectory of increasing cognitive vulnerability that warrants earlier intervention than if the clinician relied on clinical impression alone. In community health settings, the SPMSQ can be administered by non-physician health workers with minimal training.
Hospitalists, admitting nurses, long-term care teams
Documenting SPMSQ error count at hospital admission or long-term care intake establishes a quantitative cognitive baseline for monitoring post-admission delirium, tracking functional decline, and informing care-planning discussions. When a hospitalized patient's cognitive status deteriorates during admission, the admission SPMSQ score establishes whether the change represents acute-on-chronic impairment or new acute decline — a distinction with major implications for delirium workup, family communication, and discharge planning.
Ward nurses, hospitalists, consultation-liaison psychiatry
Although the SPMSQ is primarily a dementia-range cognitive screen rather than a dedicated delirium instrument, significantly elevated error counts in a patient with a previously documented normal SPMSQ can signal acute cognitive deterioration consistent with delirium. Paired with dedicated delirium tools such as the [4AT](/tools/4at-delirium) or [CAM](/tools/cam-delirium), the SPMSQ provides complementary information about the patient's cognitive baseline before the current hospitalization.
Physicians, social workers, legal and ethics consultants
The SPMSQ provides a brief, standardized, and documented cognitive measurement that can support — but does not replace — formal capacity assessments. In situations where clinical decisions require documentation of cognitive status (surgery consent, discharge planning, financial decision-making concerns), an SPMSQ error count provides a standardized, reproducible data point. Scores in the moderate-to-severe range (5–10 errors) raise concerns about decision-making capacity and should trigger formal capacity assessment and, if indicated, ethics or legal consultation.
Question 4 asks for either a phone number or a street address. Phone numbers are generally easier for older adults to recall accurately and are less subject to recent environmental change — patients who have recently moved may not yet know their new address. Asking for the phone number first reduces erroneous scoring of genuine memory impairment versus recency of relocation.
SPMSQ performance can be confounded by environmental noise, interruptions, pain, and anxiety. Administer the questionnaire in a calm, distraction-free setting and allow the patient adequate time to respond. Rushing the patient or administering SPMSQ in a chaotic environment may inflate error counts reflecting situational stress rather than intrinsic cognitive impairment.
The serial subtraction item (subtract 3 from 20 repeatedly) has nuanced scoring: if the patient makes one error but then continues correctly from the wrong number, count only 1 error. Do not count multiple errors for a single cascade of incorrect numbers flowing from one initial mistake — count only the number of discrete individual subtraction errors. This distinction can shift the total error count by 1–2 points and change the impairment classification.
When applying the education adjustment, document in the medical record not only the raw SPMSQ error count but also the education level and the adjusted interpretation band used. This ensures that providers reviewing the chart at a later date can reproduce the interpretation and track cognitive changes accurately against the same adjusted baseline.
The SPMSQ is designed as a cognitive screen for moderate-to-severe impairment, not a sensitive MCI detector. A patient with 0 SPMSQ errors may still have mild cognitive impairment that affects complex functional tasks. If clinical concern for MCI persists despite a normal SPMSQ, supplement with [MoCA](/tools/moca-score) or formal neuropsychological testing, which assess additional domains including visuospatial function and executive function.
When a patient presents with acute confusion, the SPMSQ alone is insufficient — it does not assess the fluctuating attention and acute onset features that define delirium. Pair SPMSQ with the [4AT](/tools/4at-delirium) or [CAM](/tools/cam-delirium) to differentiate delirium from chronic cognitive impairment. A previously normal SPMSQ suddenly showing 5+ errors strongly supports acute-onset cognitive change consistent with delirium.
Hearing impairment in older adults can cause question misunderstanding that mimics cognitive failure. Before administering, ensure the patient can hear the questions clearly — speak slowly, face the patient, and use hearing aids if available. Document any accommodations made in the medical record.
When SPMSQ results conflict with family observations, administer a collateral-history instrument like the [AD8 Dementia Screen](/tools/ad8-dementia-screen) directly to the family member to clarify whether day-to-day functioning has changed. Family observations in familiar home environments may miss impairment that SPMSQ's standardized probing reveals.
SPMSQ has long-standing validation as a short geriatric cognitive screening instrument and has been studied in both dementia and delirium contexts.
Higher SPMSQ error counts indicate greater cognitive impairment signal and support deeper assessment.
Use for quick cognitive triage in older-adult settings where a brief error-count format is preferred.
Interpretation should account for education/language context and possible acute delirium effects.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
April 21, 2026 · trust-baseline
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