[1] A notable marker of primary research is the inclusion of a "methods" section, where the authors describe how the data was generated.
[2][3] When conducting secondary research, authors may draw data from published academic papers, government documents, statistical databases, and historical records.
The principal methodology in health secondary research is the systematic review, commonly using meta-analytic statistical techniques.
[6] Secondary market research uses information from the past, reuses data already collected, and is more economical.
Secondary research is based on already published data and information gathered from other conducted studies.