“…Age <1 year, 29.7 (CI 22.9-36.7) Age >1 year, 3.8 (CI 1.3-6.4) Boys > girls (incidence rate) 21 vs 13 Parent in the military (ITBI vs TBI) OR 3.6 (C.I >0.9-20.8) Hobbs et al 2005 SDH/E from NAHI from lower socioeconomic group than those with SDH/E from other causes, using a Townsend score P = 0.007 Mok et al 2010 Mothers younger, 22.8 years ± 6.0 vs 28.8 years P < 0.001 Twin births in NAHI, 8%, compared with prevalence of twins in the general population of Scotland, 1.56%…”