NHANES Chronic Condition Prevalence Estimates for DQS

Prevalence estimates for select chronic conditions derived from the National Health and Nutrition Examination Survey (NHANES). The dataset is curated for the NCHS Data Query System (DQS) and was last updated in August 2025. It includes columns for ESTIMATE, STANDARD_ERROR, and confidence intervals across various demographic SUBGROUPS.

Use Cases

• Analyze temporal trends in disease prevalence using TIME_PERIOD and ESTIMATE columns.
• Compare prevalence estimates (ESTIMATE) and their uncertainty (STANDARD_ERROR, ESTIMATE_LCI, ESTIMATE_UCI) across different demographic SUBGROUPS.
• Filter and explore data by health TOPIC, SUBTOPIC, and CLASSIFICATION for specific condition analysis.
• Identify data points requiring caution by checking the FLAG column for statistical reliability notes.

Strengths

• Contains 25 detailed columns for metadata, estimates, and error metrics.
• Data is sourced from the authoritative NHANES survey conducted by the CDC.

Limitations

• Sample size (row count) and geographic coverage are unknown.
• Specific chronic conditions covered are not detailed in the provided metadata.

Provenance

Source

National Health and Nutrition Examination Survey (NHANES) via data.cdc.gov.

Collection Method

Survey-based prevalence estimates calculated for the NCHS Data Query System.

Freshness

Last updated on 2025-08-22.

Geography

United States (implied by NHANES).