Table 2 Sample size and number of features included in each omics dataset
From: In utero and childhood exposure to tobacco smoke and multi-layer molecular signatures in children
Omics dataset | Number of samples | Number of features | |||
|---|---|---|---|---|---|
Initial | After QC | With data on smoking | Initial | After QC | |
Blood DNA methylation | 1200 | 1192 | 1105 | 485,512 | 386,518 |
Blood gene expression | 1176 | 1158 | 958 | 64,568 | 58,254 |
Blood miRNA gene expression | 961 | 955 | 895 | 2549 | 1117 |
Plasma proteins | 1212 | 1188 | 1103 | 43 | 36 |
Serum metabolites | 1209 | 1208 | 1128 | 188 | 177 |
Urine metabolites | 1212 | 1211 | 1131 | 64,000 | 44 |