Overview
(a) Report numbers of individuals at each stage of study—eg numbers potentially eligible, examined for eligibility, confirmed eligible, included in the study, completing follow-up, and analysed
(b) Give reasons for non-participation at each stage
(c) Consider use of a flow diagram
(a) Give characteristics of study participants (eg demographic, clinical, social) and information on exposures and potential confounders
(b) Indicate number of participants with missing data for each variable of interest1-Explain the scientific background and rationale for the investigation
being reported, 2-Present key elements of study design early in the paper3-
Cross-sectional study—Give the eligibility criteria, and the sources and methods of selection of participants 4-
Clearly define all outcomes, exposures, predictors, potential confounders, and effect modifiers. Give diagnostic criteria, if applicable 5-
For each variable of interest, give sources of data and details of methods of assessment (measurement). Describe comparability of assessment methods if there is more than one group 6-Describe any efforts to address potential sources of bias 7 Explain how the study size was arrived at 8-
Explain how quantitative variables were handled in the analyses. If applicable, describe which groupings were chosen and why ..
Describe any methods used to examine subgroups and interactions ..(c) Explain how missing data were
addressed
Cross-sectional study—If
applicable, describe analytical methods