Table 2.

Cumulative incidence of type 2 diabetes by ethnicity and length of follow-up in separate groups

	No of contributing studies	Study length (years; mean (range))	GDM (%; 95% CI)	Controls (%; 95% CI)
Ethnicity:
White	6	7.28 (1.00-15.00)	9.91 (9.39 to 10.42)	0.61 (0.58 to 0.65)
Mixed	10	11.44 (1.00-25.00)	16.46 (16.16 to 16.77)	1.91 (1.88 to 1.93)
Non-white	4	6.00 (2.00-10.00)	15.58 (13.30 to 17.86)	2.02 (1.35 to 2.69)
Study follow-up length (years):
1-5	6	2.83 (1.00-5.00)	9.22 (7.19 to 11.26)	1.19 (0.46 to 1.93)
>5-10	7	7.61 (5.40-10.00)	12.06 (11.59 to 12.53)	0.69 (0.66 to 0.73)
>10	7	15.97 (11.00-25.00)	16.15 (15.83 to 16.47)	1.90 (1.87 to 1.92)