Loading...
Printed on 6/5/2026
For informational purposes only. This is not medical advice.
IQCODE-26 is an informant questionnaire that evaluates perceived cognitive change over time in an older adult. The mean item score reflects degree of decline, with higher scores indicating greater concern.
Formula: IQCODE-26 score = mean of 26 item ratings, range 1.0-5.0.
Create an account to save calculations, favorite tools, and access your dashboard anytime.
Already have an account? Sign in
IQCODE long forms have longstanding validation for dementia screening support across diverse settings.
Higher IQCODE-26 means indicate greater informant-reported cognitive decline and support further evaluation.
Use when a reliable informant is available and longitudinal cognitive-change perspective is needed.
Results depend on informant accuracy, patient-contact frequency, and contextual bias.
For related assessments, see IQCODE-16, AD8 Screen and ECog-12.
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 · v1.0.0
Added IQCODE-26 trust metadata and initial changelog for evidence-version tracking.
Estimate informant-reported cognitive decline using the short 16-item IQCODE mean score.
GeriatricsScreen for cognitive impairment using the 8-item AD8 informant interview (score 0-8).
GeriatricsInformant-rated everyday cognition decline scale summarized by mean score across 12 items.
GeriatricsA 30-point cognitive screen designed for culturally and linguistically diverse populations.