Cognitive Screening Score Calculator

The Mini-Cog is deliberately a two-task, 5-point tool -- three-word recall plus clock drawing -- and its total and positive/negative screen come only from those two components. This calculator's added orientation, attention/calculation, language, and registration scores feed the separate estimated-MMSE figure below the Mini-Cog result; they never change the Mini-Cog score itself.

Yes -- it fires whenever the Mini-Cog is positive (total of 2 or lower) OR the estimated MMSE falls below 24, and those two conditions are not always aligned. A patient can score 3 or higher on the Mini-Cog itself (a negative screen) while still landing under 24 on the estimated MMSE once the added domain scores are folded in, which is enough on its own to recommend full assessment.

Age multiplies the base probability derived from the Mini-Cog result by 1.1 starting at age 75 and by 1.3 starting at age 85, reflecting that dementia prevalence rises with age in the population even at a given screening result. Education works differently: fewer than 8 years discounts the estimate by a factor of 0.9, and more than 16 years nudges it up by a factor of 1.1, because brief screens like the Mini-Cog have a higher false-positive rate in patients with less formal education -- unfamiliar word-recall and clock-drawing tasks are harder to pass regardless of true cognitive status, so a positive screen there is less trustworthy on its own, while a positive screen in a highly educated patient is a comparatively stronger signal. Both are coarse illustrative adjustments, not a validated risk model, so treat the resulting percentage as directional rather than diagnostic.

No. The estimate starts from a rough lookup table keyed to the 0-5 Mini-Cog total, then adjusts up to plus-or-minus 3 points based on the added domain scores -- it is this calculator's own approximation, not a validated Mini-Cog-to-MMSE conversion, since no such official crosswalk exists. Only administering the actual 30-point MMSE produces a real MMSE score.

It adds 1.5 years to the patient's actual age for every point the estimated MMSE falls below a perfect 30, so a lower cognitive-test performance produces a higher functional cognitive age than the patient's chronological age. It is an illustrative communication tool for framing results, not a validated cognitive-aging metric used in clinical practice.