Validated screening tool

CDC Healthy Days Core Module

Four core questions about general health and the number of unhealthy days in the past month.

◷ 2 min☷ 4 questions🔒 Private on this device

What this tool explores

Four core questions about general health and the number of unhealthy days in the past month.

Timeframe
During the past 30 days
What it can tell you
A structured picture of your current responses and relevant dimensions.
What it cannot tell you
It cannot diagnose a condition, explain every cause, or replace professional assessment.

Before you begin

Choose the answer that fits best. Do not force precision where your experience is mixed. Unanswered items are never counted as zero.

Private by default

Scoring happens in your browser. After completion, raw answers are discarded by default; only a summary is saved if you choose.

Source and use

U.S. Centers for Disease Control and Prevention

CDC Health-Related Quality of Life Measures (HRQOL-4).

Public domain; developed with federal funds. Retain source attribution.

View primary source →

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