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. Author manuscript; available in PMC: 2018 Aug 10.
Published in final edited form as: Prev Med. 2017 Mar 23;100:67–75. doi: 10.1016/j.ypmed.2017.03.020

Table 3.

Study data items by category.

Data categories Data items
Study design Research objective
Study groups
Funding source
Geographic location
Setting type
Setting description
Study design
Primary outcomes
Measurement intervals
Patient characteristics Sampling strategy
Unit of randomization
Process of randomization
Inclusion/exclusion criteria
Number eligible
Number randomized
Number completers
Number analyzed
Mean age (or age range)
Number female (%)
Number race (%)
Number ethnicity (%)
Median income (%)
Number insured (%)
Number education (%)
Number health literacy (%)
Other baseline characteristics
Interventions Comparator(s) description
Intervention format
Intervention delivery agent
Intensity of the intervention
Theory-based intervention
Intermediate outcomes Intermediate outcome(s) description
Exact measure(s) used
Timing of measurement
Data source
Number analyzed for outcome(s)
Results by group
Differences by group
Controlled covariates
Statistical methods used
Analysis adjusted for multiple comparisons
Analysis adjusted for clustering effect
Intention to treat analysis
Ultimate outcomes Stated outcome(s)
Exact measure used to measure outcome(s)
Timing of measurement
Data source
Number analyzed for outcome(s)
Results by group
Differences by group
Controlled covariates
Statistical methods used