Table 1

White’s classification of diabetes in pregnant women⁷

Class of diabetes	Fetal survival (%)
Class A: chemical diabetes	100
Class B: maturity onset (age over 20 years), duration under 10 years, no vascular lesions	67
Class C: age 10–19 years at onset or 10–19 years’ duration, no vascular lesions	48
Class D: under age 10 at onset or over 20 years’ duration or calcification of vessels of legs or hypertension or benign retinopathy	32
Class E: calcification of pelvic arteries	13
Class F: nephropathy	3