Table 1.
Descriptive statistics of genotyping SNPs and ROHs across datasets
| Dataset | N | Region | Platform | SNPs passing QC | LD pruned SNPs passing QC | avg Froh * 100 | SD Froh *100 | avg ROH length (kb) | SD ROH length (kb) | avg ROH count |
|---|---|---|---|---|---|---|---|---|---|---|
| IBG | 301 | Colorado, USA | Affymetrix 6.0 | 577090 | 206772 | 0.33 | 0.16 | 1264 | 703 | 7.20 |
| GAIN NE | 357 | Northern Europe | Perlegen 600K | 280995 | 198218 | 0.31 | 0.39 | 1537 | 1875 | 5.50 |
| GAIN UK | 183 | United Kingdom | Perlegen 600K | 242867 | 174013 | 0.19 | 0.15 | 1550 | 1133 | 3.39 |
| GAIN SP | 68 | Spain | Perlegen 600K | 312730 | 174598 | 0.11 | 0.10 | 1522 | 887 | 1.99 |
| MANC | 763 | England | Illumina 610 | 470062 | 250351 | 0.47 | 0.42 | 1312 | 1480 | 9.91 |
| NEWC | 717 | England | Illumina 610 | 466613 | 247990 | 0.44 | 0.35 | 1286 | 1365 | 9.39 |
| LOGOS | 776 | Greece | Illumina OmniExpress | 393770 | 239923 | 0.38 | 0.54 | 1780 | 2982 | 5.92 |
| NCNG | 623 | Norway | Illumina 610 | 373975 | 195130 | 0.41 | 0.35 | 1682 | 1827 | 6.79 |
| ZHH | 175 | New York, USA | Illumina OmniExpress | 548508 | 274325 | 0.60 | 0.53 | 1540 | 1676 | 10.84 |
| TOP | 305 | Norway | Affymetrix 6.0 | 578177 | 237481 | 0.45 | 0.31 | 1273 | 956 | 9.76 |
| RUJ | 586 | Germany | Illumina OmniExpress | 560407 | 277024 | 0.48 | 0.53 | 1297 | 2148 | 10.32 |
| Total | 4854 | --- | --- | --- | --- | 0.41 | 0.42 | 1421 | 1829 | 8.02 |
Froh is calculated as proportion of an individual's genome captured in ROH.