Table 3.
Sample characteristics of the brain dataset per ethnicity
| African–American | Caucasian | All | |
|---|---|---|---|
| N | 99 | 115 | 214 |
| Age (mean (sd)) | 49.24 (16.30) | 48.28 (16.62) | 48.73 (16.44) |
| Male (%) | 58 (58.6) | 74 (64.3) | 132 (61.7) |
| Schizophrenia (%) | 38 (38.4) | 53 (46.1) | 91 (42.5) |
| DUSP22 DMR (mean (sd)) | 0.43 (0.07) | 0.34 (0.14)* | 0.38 (0.12) |
| DUSP22 expression (mean (sd)) | 2.83 (0.33) | 2.81 (0.33) | 2.82 (0.33) |
| Genetic background (%) | |||
| 1 | 3 (3.1) | 27 (23.5)* | 30 (14.0) |
| 2 | 35 (36.4) | 65 (56.5)* | 100 (46.7) |
| 3 | 61 (63.5) | 23 (20.0)* | 84 (39.3) |
*p < 0.001 in either a Pearson’s χ2 test (for genotype) or t-test (for methylation levels)