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Table 4 Data availability in each study for different analyses

From: DNA methylation links prenatal smoking exposure to later life health outcomes in offspring

    Sensitivity and downstream analyses for top CpG sites
Study Mean age at methylation data collection (years) Association results for cord-blood-methylation associated CpG sites Never-smokers Paternal smoking Amount of cigarettes smoked in pregnancy Longitudinal methylation data (mean age at the 2nd time point)
NFBC1986 16 Yes Yes Yes Yes No
NFBC1966 31 Yes Yes Yes Yes Yes (46 years)
ALSPAC mothers 30 Yes Yes No No Yes (48 years)
ALSPAC children 17 Yes Yes Yes No No
IOWBC 18 Yes Yes No No No