Table 2. Number of differentially methylated probes in case versus control placental samples.

Δβ cutoff	0%	0%	5%	5%
Step-up p-value cutoff	0.5	0.05	0.05	0.01
Term + Preterm PE vs Control	179,186	4,316	229	0
Term PE vs Control	209	0	0	0
Preterm PE vs Control	239,433	45,652	3,411	421
Preterm PE vs Term PE	159,604	3,422	179	0

Bold number denotes final number of gene probes used for functional analysis.