Table 3.
Genotypic distribution of the 4-/5-length polymorphism of Per3 in schizophrenia patients and controls based on sex
| Group | N | Genotype, n (%)
|
Allele, n (%)
|
χ2 | P | |||
|---|---|---|---|---|---|---|---|---|
| 4-/4- | 4-/5- | 5-/5- | 4- | 5- | ||||
| Male control | 184 | 73 (39.7) | 90 (49) | 21 (11.3) | 236 (0.64) | 132 (0.36) | 0.373 | 0.54 |
| Male schizophrenia | 180 | 68 (37.8) | 87 (48.3) | 25 (13.9) | 223 (0.62) | 137 (0.38) | ||
| Female control | 162 | 68 (42.0) | 73 (45) | 21 (13.0) | 209 (0.65) | 115 (0.35) | 0.036 | 0.84 |
| Female schizophrenia | 113 | 47 (41.6) | 50 (44.3) | 16 (14.1) | 144 (0.64) | 82 (0.36) | ||
Notes: 4-, 4-repeat allele; 5-, 5-repeat allele.
Abbreviations: N, number of samples; n, number of genotypes and alleles.