Table 1: Information extracted from each reviewed study by study domain.

Study publicationStudy design Study analysisStudy results

First authorYear of survey Statistical methodsSample size (percent males)
Publication yearRecruitment periodStatistical model adjustment factorsAge range and/or mean age
Author affiliation*Study design typeStatistical softwareEthnicity or nationality
Journal name*Eligibility criteriaObesity prevalence and/or mean BMI
Journal impact factor*Sampling source/frameObesity correlates and/or trend
Sampling method
Response rate
Data collection method
Type of collected data
Obesity category*#
List of all collected variables reported*
Other anthropometric measures*

Data for these variables are listed in the supplementary table.
#Obesity category refers to whether obesity was examined as the main outcome or as a risk factor for other outcomes.