Fig. 5

Identification of studies with significant contamination levels in public data. Using available data, we examined the 10 CpGs chosen to identify contamination, though some studies had previously filtered their data and some CpGs were not available. We called maternal contamination of samples if more than 50% of the available CpGs were above our contamination thresholds, and identified two studies (GSE54399 and PREDO) with contaminated samples