Table 1.
Genotypic distribution of the 4-/5-length polymorphism of Per3 in bipolar disorder type I (BD-I) and schizophrenia patients and controls
| Group | N | Genotype, n (%)
|
Allele, n (%)
|
χ2 | P | |||
|---|---|---|---|---|---|---|---|---|
| 4-/4- | 4-/5- | 5-/5- | 4- | 5- | ||||
| Control | 346 | 141 (40.8) | 163 (47.1) | 42 (12.1) | 445 (0.64) | 247 (0.36) | 4.634 | 0.03* |
| BD-I | 311 | 109 (35.1) | 146 (47.0) | 56 (18.0) | 364 (0.59) | 258 (0.41) | ||
| Schizophrenia | 293 | 115 (39.3) | 137 (46.7) | 41 (14.0) | 367 (0.63) | 219 (0.37) | 0.385 | 0.53 |
Notes: 4-, 4-repeat allele; 5-, 5-repeat allele;
*
statistically significant.
Abbreviations: N, number of samples; n, number of genotypes and alleles.