Table 4. Associations between reduced sperm counts and the most common MTHFR haplotypes.
Haplotype | Frequency | Cases (alleles) | Controls (alleles) | Chi2 | p | ||
n | % | n | % | ||||
GCA | 0.400 | 201 | 40.26 | 87 | 38.07 | 0.217 | 0.6410 |
GTA | 0.290 | 144 | 28.78 | 65 | 28.33 | 0.0020 | 0.9627 |
GCC | 0.261 | 127 | 25.48 | 60 | 26.4 | 0.114 | 0.7360 |
GTC | 0.034 | 13 | 2.68 | 11 | 5 | 2.647 | 0.1037 |