Population | Prevalence | Frequency (%) | Frequency of associated congenital anomalies | ||
---|---|---|---|---|---|
 |  | CL | CP | CLP |  |
Europe | |||||
   Scotland [29] | 1.53 | 17.8 | 51.4 | 30.8 | 32.9 |
   Sweden [16] | 1.70 | 26.5 | 38.8 | 34.7 | 21.0 |
1.52 | 22.1 | 39.5 | 38.4 | 36.5 | |
Asia | |||||
   Japan [32] | 1.44 | 32.1 | 24.8 | 43.2 | 21.1 |
   China [33] | 1.66 | 31.4 | 15.4 | 53.2 | 14.4 |
   Pakistan [34] | 1.91 | 41.9 | 23.9 | 34.2 | 17.9 |
Africa | |||||
   Zambia [11] | 0.24 | 58.3 | 3.9 | 37.8 | n/a |
   Nigeria [24] | 0.37 | 49.2 | 18.9 | 31.9 | 18 |
   Kenya [14] | n/a | 30.6 | 8.5 | 60.9 | 8.2 |