Study | Country | N | A (%) | B (%) | C (%) | B + C (%) | Others(%) |
---|---|---|---|---|---|---|---|
Bunning [17] | British | 194 | 67.0 | / | / | 33.0 | 0.0 |
Barbaix [25] | Belgium | 134 | 61.0 | 14.0 | 14.0 | 28.0 | 11.0 |
Nakashima [21] | Japan | 202 | 49.0 | / | / | 50.0 | 1.0 |
El-Eishi [18] | Egypt | 200 | 40 | / | / | 49 | 11 |
Campos [23] | Spain | 176 | 39.8 | 29.0 | 24.4 | 53.4 | 6.8 |
Jung [19] | Korea | 118 | 39.0 | 32.2 | 28.8 | 61.0 | 0.0 |
Ragab [22] | America | 1056 | 37 | / | / | 58 | 5 |
Hyer [12] | America | 768 | 41.06 | / | / | 56.03 | 2.91 |
Bunning [17] | Africa | 492 | 36.0 | / | / | 63.0 | 1.0 |
Uygur [24] | Turkey | 221 | 34.4 | 25.3 | 33.0 | 58.4 | 7.2 |
Gupta [26] | India | 401 | 25.9 | 28.0 | 39.0 | 66.8 | 7.2 |
Present study | China | 72 | 36.1 | 19.4 | 44.4 | 63.8 | 0.0 |