secular

How are Secular Trends Measured?

Secular trends are typically measured using longitudinal data collected over many years. This data is often sourced from national health registries, surveillance systems, and other long-term studies. Statistical methods, including linear regression and time-series analysis, are employed to identify and quantify these trends. It's essential to distinguish secular trends from short-term fluctuations and periodic patterns, such as seasonal variations or epidemic cycles.

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