| Country |
Total No. of Polyps |
Adenomatous Polyps, No. (%) |
Hyperplastic Polyps, No. (%) |
| Denmark (9) |
305 |
184 (60.3) |
121 (59.6) |
| Norway (14, 15) |
445 |
329 (73.9) |
174 (39.1) |
| Canada (16) |
582 |
871 (83) |
129 (12.3) |
| Hong Kong (11) |
200 |
123 (61.5) |
62 (31) |
| Thailand (12) |
696 |
271 (39) |
250 (36) |
| India (13) |
151 |
99 (79.8%) |
11 (8.8) |
| South Iran (1) |
990 |
603 (60.9) |
300 (30.3) |
| Albania |
369 |
300 (81.3) |
69 (18.7) |
|