marginally insignificantP = 0.056
We observed that the association between smoking beyond early pregnancy and HDP was marginally insignificant (OR 1.19; 95% CI, 1.00–1.43; P = 0.056) and the association between smoking 10 or more cigarettes per day in early pregnancy and HDP was significant (OR 1.27; 95% CI, 1.04–1.54).