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Table 1 Sampling and study design

From: Long-term prenatal exposure to paracetamol is associated with DNA methylation differences in children diagnosed with ADHD

Group Type No. Covariates Outcome
Sex M/F Smoking: never/daily/sometimes (days) Maternal age (median age) Gestational age (median weeks)
No Paracetamol, no ADHD Control group 96 52/44 72/0/4 29.5 40 DNA methylation
Paracetamol, no ADHD Drug exposure group      
 Sporadica 78 33/45 65/2/2 31.0 40
 Long termb 18 10/8 14/0/2 28.0 39
No Paracetamol, ADHD ADHD control group 96 66/30 73/0/11 29.0 40
Paracetamol, ADHD Synergy group      
 Sporadica 77 57/20 58/0/10 29.0 40
 Long termb 19 14/5 13/0/3 29.0 39
  1. a6–19 days
  2. b≥20 days