Table 5.

Crude and adjusted odds for pre-eclampsia among women exposed v. unexposed to extra vitamin D from fortification during fetal life, restricted to include only those women with information on pre-pregnancy BMI; women born between June 1983 and August 1988, who gave birth to their first child at age 14·5 to 27·5 years

		Crude model		Adjusted model*
Outcome	N cases	OR	95 % CI	OR	95 % CI
Gestational hypertension†	464	0·99	0·83, 1·19	0·99	0·82, 1·19
Mild to moderate and unspecified pre-eclampsia‡	972	0·86	0·76, 0·98	0·86	0·76, 0·99
Severe pre-eclampsia, HELLP syndrome and eclampsia§	355	0·95	0·77, 1·17	0·96	0·78, 1·19
All above	1791	0·91	0·82, 1·00	0·91	0·83, 1·01

HELLP, haemolysis, elevated liver enzymes, low platelets; ICD-10, International Statistical Classification of Diseases and Related Health Problems 10th Revision.

^*Adjusted for age at delivery, maternal smoking status, pre-pregnancy BMI, and singleton or multiple births.

^†ICD-10 code: O13.9.

^‡ICD-10 codes: O14.0 and O14.9.

^§ICD-10 codes: O14.1, O14.2 and O15.0.