Table 3

Periconception HbA1c and fetal anomalies

Hba1c category	Any fetal anomaly		Minor anomaly		Major anomaly
Hba1c category	Unadjusted OR (95% CI)	Adjusted OR (95% CI)*	Unadjusted OR (95% CI)	Adjusted OR (95% CI)*	Unadjusted OR (95% CI)	Adjusted OR (95% CI)*
≤7.4% ≤57 mmol/mol	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
7.5%–9.4% 58–79 mmol/mol	2.28 (1.04 to 5.00)	2.35 (1.08 to 5.13)	1.47 (0.37 to 5.87)	2.08 (0.48 to 9.02)	2.50 (1.06 to 5.9)	2.35 (1.02 to 5.44)
9.5%–11.4% 80–101 mmol/mol	3.26 (1.23 to 8.64)	2.86 (1.08 to 7.59)	2.27 (0.45 to 11.6)	2.22 (0.42 to 11.6)	3.64 (1.28 to 10.4)	3.17 (1.11 to 9.06)
≥11.5% ≥102 mmol/mol	5.58 (1.83 to 17.0)	7.66 (2.27 to 25.9)	1.90 (0.22 to 16.4)	1.76 (0.18 to 17.0)	5.79 (1.78 to 18.9)	7.75 (2.17 to 27.7)