Table 3.
Distribution of sex at diagnosis
| Country | Total | Male | Female | Ratio M: F |
| Asia | ||||
| Pakistan (2015-2016)[20] | 70 | 1.8: 1 | ||
| India (2000-2017)[64] | 85 | 57 (67%) | 28 (33%) | 2: 1 |
| India (1990-2004)[19] | 103 | 76 (74%) | 27 (26%) | 2.8: 1 |
| Thailand (2000-2007)[21] | 67 | 39 (58.2%) | 23(34.3%) | 1.7: 1 |
| Vietnam (2010-2012)[22] | 130 | 76(58.5%) | 54 (41.6%) | 1.4: 1 |
| China (2008-2013)[17] | 59 | 35 (59%) | 24 (40.1%) | 1.5: 1 |
| China (2000-2006)[18] | 98 | 1.3: 1 | ||
| South America | ||||
| Brazil (1991-2012)[30] | 258 | 148 (57%) | 110 (43%) | 1.3: 1 |
| Brazil (1990-2000)[16] | 125 | 68 (54.4%) | 57 (45.6%) | 1.2: 1 |
| Argentina (1999-2015)[12] | 39 | 21 (54%) | 18 (46%) | 1.2: 1 |
| Argentina (2000-2012)[29] | 971 | 509 (52%) | 462 (48%) | 1.1: 1 |
| Middle East and North Africa | ||||
| Iran (1974-2005)[25] | 219 | 1.9: 1 | ||
| Iraq (2008-2014)[26] | 62 | 37 (59.7%) | 25 (40.3%) | 1.5: 1 |
| Morocco (2012-2015)[27] | 40 | 26 (65%) | 14 (35%) | 1.8: 1 |
| Egypt (2005-2010)[23] | 142 | 68 (51.5%) | 64 (48.5%) | 1.06: 1 |
| Egypt (2001-2010)[24] | 53 | 35 (66%) | 18 (35%) | 1.9: 1 |
| Egypt (2007-2011)[28] | 271 | 169 (62.4%) | 102 (37.6%) | 1.65: 1 |
| Sub-Saharan Africa | ||||
| Northern Nigeria (2003-2009)[79] | 14 | 10 (71.4%) | 4 (28.6%) | 2.5: 1 |
| Southern Africa (South Africa and Namibia) (1983-1997)[43] | 1.7: 1 | |||
| Ethiopia (2010-2013)[78] | 5 | 3 (60%) | 2 (40%) | 1.5: 1 |
| Kenya (1997-2005)[44] | 22 | 11 (50%) | 11 (50%) | 1: 1 |