At NCHStats, we publish statistics-based content designed to help readers understand health, demographic, economic, and population trends in the United States and beyond.
Our content is built using publicly available data, official reports, and reputable research sources. This page explains how we gather, interpret, and present information across the site.
1. Our Source Standards
We prioritize data from:
- government agencies
- public statistical offices
- peer-reviewed research
- established nonpartisan institutions
- recognized international organizations
Examples of sources we may use include the U.S. Census Bureau, CDC, NIH, Bureau of Labor Statistics, American Community Survey, World Health Organization, OECD, World Bank, and similar institutions.
When official or primary data is not available in a clear format, we may also reference reputable secondary sources that summarize public datasets. In those cases, we aim to verify the figures against original source material whenever possible.
2. How We Build Articles
Each article begins with topic research and source collection. We identify the most relevant datasets, reports, and historical comparisons for the subject.
Depending on the article, we may analyze:
- long-term trends
- year-over-year changes
- regional differences
- demographic breakdowns
- health or economic indicators
- public policy context
We organize these findings into clear summaries, charts, tables, and narrative explanations to make complex data easier to understand.
3. Estimates, Projections, and Forecasts
Some pages include estimates, projections, or forward-looking interpretations. These are based on the most recent available data and should not be treated as guaranteed future outcomes.
Projected figures may change as new census releases, health reports, survey data, or revised methodologies become available.
When a number is projected rather than directly measured, we aim to label it clearly.
4. Health and Medical Statistics
For health-related topics, we aim to rely on recognized public-health datasets, official surveillance systems, and major research organizations.
Health statistics may change due to:
- reporting delays
- revised case definitions
- updated disease classifications
- incomplete provisional data
- differences between survey-based and administrative datasets
Readers should review original medical or public-health sources where appropriate and should not treat statistical summaries on this site as personal medical advice.
5. Data Limitations
All statistical reporting has limitations.
These may include:
- reporting lag
- incomplete datasets
- sample-size constraints
- geographic gaps
- changing definitions over time
- variation between sources
- differences in methodology across agencies
For this reason, some figures may differ slightly from other publications covering the same topic.
6. Updates and Revisions
We review and update articles when:
- newer official data becomes available
- a source revises previously published figures
- definitions or classifications change
- errors are identified
Where appropriate, we may note when an article was updated to reflect newer data or corrections.
7. References
Whenever possible, we include source references directly in the article. These may appear as linked citations, reference lists, methodology notes, or data-source sections.
We encourage readers to consult original datasets and source publications for deeper review.
8. Corrections
If you believe a page contains an error, outdated figure, or misleading interpretation, please contact us at office@nchstats.com.
We welcome factual corrections and source updates.