Table 1 Study characteristics
First author, year | Country | Study design | Setting | Study period | Funding source |
|---|---|---|---|---|---|
Akturk, 2019 [21] | USA | Cross-sectional | Single site | June 2017 and January 2018 | Not reported |
Helgeson, 2016 [22] | USA | Cohort | Single site | Not reported | National Institutes of Health |
Hogendorf, 2016 [23] | Poland | Cross-sectional | Multiple sites | May to June 2013 | Medical University of Lodz |
Thurheimer-Cacciotti, 2017 [24] | USA | Cross-sectional | Not reported | Not reported | American Diabetes Association |
Winhusen, 2018 [25] | USA | Case-control | City-wide | Not reported | Not reported |
Wisk, 2018 [26] | USA; Canada | Cross-sectional | Multinational | Not reported | Not reported |