Frequencies of IGF-I CA repeat alleles in colorectal adenoma cases and controls in the NHS (1989–94)
| CA allele | Cases | (%) | Controls | (%) |
|---|---|---|---|---|
| 11 | 1 | (0.2) | 3 | (0.6) |
| 14 | 1 | (0.2) | 0 | (0) |
| 16 | 1 | (0.2) | 0 | (0) |
| 17 | 8 | (1.6) | 6 | (1.2) |
| 18 | 25 | (5.0) | 20 | (4.0) |
| 19 | 322 | (64.7) | 308 | (61.8) |
| 20 | 112 | (22.5) | 128 | (25.7) |
| 21 | 20 | (4.0) | 25 | (5.0) |
| 22 | 8 | (1.6) | 8 | (1.6) |