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Table 2 Characteristics of authors of intervention systematic reviews in eyes and vision

From: Authorship diversity among systematic reviews in eyes and vision

Characteristics of authors Cochrane [n = 301] Non-Cochrane [n = 439] Both [n = 11]a Total [N = 751]
n (%) n (%) n (%) n (%)
Gender
 Woman 142 (47%) 131 (30%) 3 (27%) 276 (37%)
 Man 148 (49%) 215 (49%) 8 (73%) 371 (49%)
 Unknown 11 (4%) 93 (21%) 0 (0%) 104 (14%)
Method of ascertainment
 Knowledge of the author 30 (10%) 5 (1%) 2 (18%) 37 (5%)
 Strong gender association 145 (48%) 161 (37%) 3 (27%) 309 (41%)
 Genderize.io 52 (17%) 73 (17%) 1 (9%) 126 (17%)
 Internet search 63 (21%) 107 (24%) 5 (46%) 175 (23%)
 Not found 11 (4%) 93 (21%) 0 (0%) 104 (14%)
Number of appearancesb
 1 263 (87%) 402 (92%) 0 (0%) 665 (89%)
 2 23 (8%) 32 (7%) 8 (73%) 63 (8%)
 3 8 (3%) 5 (1%) 2 (18%) 15 (2%)
 4 2 (1%) 0 (0%) 0 (0%) 2 (0%)
 5 2 (1%) 0 (0%) 0 (0%) 2 (0%)
 7 0 (0%) 0 (0%) 1 (9%) 1 (0%)
 8 2 (1%) 0 (0%) 0 (0%) 2 (0%)
 10 1 (0%) 0 (0%) 0 (0%) 1 (0%)
Author’s institution locationc
 Europe 125 (42%) 116 (26%) 6 (55%) 247 (33%)
 Western Pacific 59 (20%) 181 (41%) 3 (27%) 243 (32%)
 North America 88 (29%) 121 (28%) 2 (18%) 211 (28%)
 South America 7 (3%) 12 (3%) 0 (0%) 19 (3%)
 South-East Asia 11 (3%) 7 (2%) 0 (0%) 18 (2%)
 Eastern Mediterranean 8 (3%) 2 (0%) 0 (0%) 10 (1%)
 Africa 3 (1%) 0 (0%) 0 (0%) 3 (0%)
Author’s institution country
 China 19 (6%) 151 (34%) 2 (18%) 172 (23%)
 USA 78 (26%) 90 (20%) 2 (18%) 170 (23%)
 UK 95 (32%) 25 (6%) 4 (36%) 124 (17%)
 Australia 25 (8%) 16 (4%) 1 (9%) 42 (6%)
 Canada 10 (3%) 31 (7%) 0 (0%) 41 (5%)
 Italy 7 (2%) 13 (3%) 0 (0%) 20 (3%)
 Netherlands 3 (1%) 16 (4%) 0 (0%) 19 (3%)
 Spain 2 (1%) 14 (3%) 0 (0%) 16 (2%)
 India 10 (3%) 3 (1%) 0 (0%) 13 (2%)
 Germany 4 (1%) 7 (2%) 0 (0%) 11 (1%)
 Brazil 5 (2%) 5 (1%) 0 (0%) 10 (1%)
 France 0 (0%) 9 (2%) 0 (0%) 9 (1%)
 Singapore 6 (2%) 3 (1%) 0 (0%) 9 (1%)
 Switzerland 4 (1%) 4 (1%) 0 (0%) 8 (1%)
 South Korea 0 (0%) 7 (2%) 0 (0%) 7 (1%)
 Austria 1 (0%) 4 (1%) 1 (9%) 6 (1%)
 New Zealand 5 (2%) 1 (0%) 0 (0%) 6 (1%)
 Chile 0 (0%) 5 (1%) 0 (0%) 5 (1%)
 Otherd 27 (9%) 35 (8%) 1 (9%) 63 (8%)
  1. aEleven authors contributed to both Cochrane and non-Cochrane systematic reviews
  2. bNumber of times an author appeared, regardless of position and journal
  3. cBased on the country’s classification according to the World Health Organization regions of the world
  4. d“Other” includes 32 countries with less than 5 total authors. The full listing can be found in the supplementary table