Prevention of gestational diabetes through lifestyle intervention: study design and methods of a Finnish randomized controlled multicenter trial (RADIEL)

Table 2 Baseline mean BMI and history of gestational diabetes by study group

	Non-pregnant group		Pregnant group*		p Value¹Difference between the groups
	N	BMI mean (SD)²	N	BMI mean (SD)²
Previous GDM	187	28.6 (5.7)	199	29.4 (6.2)	0.19
No GDM history	48	36.0 (4.4)	291	35.0 (3.9)	0.11

BMI = body mass index; GDM = gestational diabetes.
*Mean weeks of gestation 13 (range 6 to 18).
¹ P-value based on Student’s t test.
² P-value based on Student’s t test on difference between participants with and without previous GDM <0.001.

ISSN: 1471-2393