| Intron type | Statistics | ||
---|---|---|---|---|
Group Aa | Group Ba | Group A/Group Bb | ||
Point mutation at 1016V | ||||
 V1016G/V1016G | 11 | 0 | – | χ2 = 15.0, df = 2, P = 0.00056 |
 V1016G/+ | 12 | 0 | – | |
 +/+ | 14 | 13 | – | |
Point mutation at 1534F | ||||
 F1534C/F1534C | 0 | 3 | – | χ2 = 6.7, df = 2, P = 0.035 |
 F1534C/+ | 2 | 0 | – | |
 +/+ | 10 | 4 | – |