Table 1 : Methodologies Used to Measure Health Behaviors [9].

Quantitative Qualitative

Rating scales Interviews or focus group discussions with the subjects of interest
Checklists Content analysis of documents to identify common themes
Physiological measures (e.g., plasma drug concentrations to measure medication adherence) Observation of participants
Observations or interviews in which structured criteria are evaluated, recorded, and quantified. Open-ended questionnaires

Vreeman et al.Journal of Integrative Psychology and Therapeutics  2013 1:2DOI : 10.7243/2054-4723-1-2