χ2 tests of genotype and allele frequencies for the VEGF gene family
| Gene/SNP | N | Genotype, n (%) | χ2 value | P value | Alleles, n (%) | χ2 value | P value | |||
| KDR rs7692791 | CC | TC | TT | C | T | |||||
| PSD | 121 | 21 (17.36) | 57 (47.11) | 43 (35.54) | 7.881 | 0.019 | 99 (40.91) | 143 (59.09) | 4.259 | 0.039 |
| Non-PSD | 131 | 8 (6.11) | 68 (51.91) | 55 (41.98) | 84 (32.06) | 178 (67.94) | ||||
| IGF-1R rs9282715 | CC | TC | TT | C | T | |||||
| PSD | 121 | 0 (0) | 7 (5.79) | 114 (94.21) | 4.131 | 0.127 | 7 (2.89) | 235 (97.11) | 4.222 | 0.040 |
| Non-PSD | 131 | 1 (0.76) | 16 (12.21) | 114 (87.02) | 18 (6.87) | 244 (93.13) | ||||
IGF-1R, insulin-like growth factor receptor 1; KDR, kinase insert domain-containing receptor; non-PSD, non-poststroke depression; PSD, poststroke depression; SNP, single nucleotide polymorphism; VEGF, vascular endothelial growth factor.