CDC HRQOL-4
ValidatedCDC Healthy Days Core Module (CDC HRQOL-4)
Adults (18+)Self, Clinician~1 min4 questions
Please answer each question about your health during the past 30 days.
Report details · optional
Shown on the report and stored with the screening record. Use initials or a code, not full names.
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About this screener — evidence, source
The standard four Healthy Days questions used in the US Behavioral Risk Factor Surveillance System since 1993. Self-rated general health plus the number of days in the past 30 when physical health or mental health was not good, and when poor health kept the person from usual activities. Gives unhealthy and healthy days and flags frequent mental or physical distress (14+ days).
Evidence · validated
Used in the BRFSS since 1993, NHANES (2000–2012) and the Medicare Health Outcomes Survey. Moriarty et al. (2003) review the measures' reliability, validity and responsiveness for population health surveillance. The 14-day thresholds for frequent mental or physical distress are CDC surveillance definitions, not clinical diagnostic cut-offs.
Source & licence
Centers for Disease Control and Prevention. Measuring Healthy Days: Population Assessment of Health-Related Quality of Life. Atlanta, GA: CDC; 2000. Moriarty DG, Zack MM, Kobau R. The Centers for Disease Control and Prevention's Healthy Days Measures — population tracking of perceived physical and mental health over time. Health Qual Life Outcomes. 2003;1:37.
Licence: Public domain — U.S. Government (CDC) survey questions, used in the BRFSS and NHANES.
Wording from CDC's HRQOL-14 "Healthy Days Measure" page (core module). "Don't know/Not sure" and "Refused" codes are not offered. Unhealthy days and the frequent-distress definitions follow CDC's methods page (https://archive.cdc.gov/www_cdc_gov/hrqol/methods_measures.htm) and CDC PLACES measure definitions.
Official source ↗