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Area of Science:

  • Public Health
  • Health Services Research
  • Professional Certification

Background:

  • The Certified in Public Health (CPH) examination is a credential for public health professionals.
  • A job task analysis (JTA) is crucial for ensuring professional certification exams accurately reflect current practice.
  • The National Board of Public Health Examiners initiated a JTA in 2014 to update the CPH examination content.

Purpose of the Study:

  • To detail the methodology behind the 2014 public health JTA.
  • To analyze the results of the JTA survey.
  • To discuss the implications of this comprehensive job task analysis for the CPH certification.

Main Methods:

  • An expert committee identified 200 public health job tasks across 10 work domains.
  • A web-based survey was distributed to public health professionals.
  • A snowball sampling method yielded 4850 usable responses, with tasks rated on importance and frequency.

Main Results:

  • Mean importance ratings for tasks ranged from 2.61 to 3.01, indicating they are generally important to very important.
  • Tasks within the ethics domain received the highest mean importance rating (3.01).
  • Subtle demographic differences were observed in task rankings between male and female respondents, and between MPH and DrPH-credentialed professionals.

Conclusions:

  • The JTA successfully established a foundational set of public health job tasks across 10 domains.
  • The findings provide a basis for refining the CPH examination's content outline.
  • Further empirical analysis, such as principal components analysis, could offer deeper insights into public health practice.