Table 3 Example of a data extraction table
Key elements to extract | Details/clarifications | |
|---|---|---|
Sources | Authors | Identify the authors of the study |
Year of publication | Identify the year the study was published | |
Journal name | Identify the publication review | |
Methods | Research specifications/study design | Identify the type of survey methodology such as experimental or non-experimental (cross-sectional, cohorts/longitudinal, case control) or quasi-experimental (cohorts/longitudinal, case control) |
Type of study | Identify the purpose of the study: etiological/analytical or the search for a relationship between a disease and its alleged factors | |
Date of study | Please specify the period during which the study took place | |
Location of the study site | Identify the country or environment or environment in which the study is conducted | |
Nature of the relationships studied | Specify if the nature of the relationships studied is correlational or causal | |
Participants/population | Participation | Total number of study participants; participation rate |
Age | Mean, median, standard deviation or extent | |
Sex | Number or percentage | |
Exposition | Exposure | Dimensions of the exposure studied |
Exposure measures | The indicators corresponding to each dimension of exposure studied | |
Effect of exposure | Outcome | This is the result of the screening type 2 Diabetes Mellitus (T2DM) |
Outcome measures | This is the frequency indicator for T2DM | |
Adjustment factors/comparators | Potential confounding or confounding variables | These are the main factors associated with exposure and exposure outcome, independently |
Modeling | Type of modeling | Ecological; multilevel or individual/traditional |
Regression model | Statistical regression model (binomial, Poisson, etc.) | |
Association measures | Define the risk measure used | |
Modelling results | Results of the association measure | This involves including the number of participants allocated for each intervention dimension and the summary of data for each intervention dimension (a contingency table for dichotomised data or mean and standard deviation for continuous data). Estimates of effect with confidence intervals and p values if available should also be included |
Key findings of the study authors | The key findings of the study | |
Relevant comments | All comments from the authors deemed relevant for a better understanding of the results of the study | |