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. 2017 Aug 16;2(1):e000047. doi: 10.1136/bmjophth-2016-000047

Table 1.

Geographic distribution of respondentsl

Country N=140  (%)
USA* 104 (74)
 Northeast 11 (11)
 South 36 (35)
 Midwest 22 (21)
 West 33 (32)
 Unknown 2 (2)
International 36 (26)
 Armenia 1 (3)
 Australia 2 (6)
 Brazil 4 (11)
 Canada 3 (8)
 Colombia 2 (6)
 Germany 2 (6)
 India 6 (17)
 Ireland 2 (6)
 Israel 2 (6)
 Mexico 3 (8)
 Paraguay 1 (3)
 Philippines 1 (3)
 South Africa 2 (6)
 Spain 1 (3)
 Sweden 1 (3)
 Turkey 1 (3)
 UK 2 (6)

*USA divided into regions as defined by the US Census Bureau: Northeast (Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Pennsylvania and Vermont), South (Alabama, Arkansas, District of Columbia, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, Oklahoma, North Carolina, South Carolina, Tennessee, Virginia, Texas and West Virginia), Midwest (Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota and Wisconsin) and West (Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington and Wyoming).