Mean first trimester HbA1c was
6.5% (SD 0.7%); glycaemic control was excellent (HbA1c ≤ 6.0%)
in 90 (32%), good (6.1-7.0%) in 122 (43%), and not optimal
( > 7.0%) in 71 (25%) of the pregnancies. Mean HbA1c during
pregnancy was 6.2% (0.9%); excellent in 113 (40%), good in 121
(43%), and not optimal in 49 (17%) pregnancies. Mean HbA1c
early in pregnancy determined in the central laboratory was
6.7% (0.7%).