Table 1. Percentage of deliveries where the woman received a prescription for insulin or an antidiabetic medicine in the year before pregnancy, during pregnancy or the year following pregnancy.

Country/region	Entire study cohort		The woman received ≥1 prescription for insulin						The woman received ≥1 prescription for anoral antidiabetic medicine
	Number of deliveries	Mean maternal agea	Year before pregnancy		During pregnancy		Year after pregnancy		Year before pregnancy		During pregnancy		Year after pregnancy
	N	Years [SDb]	(%)	(95% CI)	(%)	(95% CI)	(%)	(95% CI)	(%)	(95% CI)	(%)	(95% CI)	(%)	(95% CI)
Denmarkc	320,846	29.4 [4.8]	0.37	(0.35–0.40)	0.60	(0.57–0.62)	0.41	(0.39–0.43)	1.22	(1.18–1.25)	0.71	(0.68–0.74)	0.43	(0.41–0.46)
Norwayd	301,833	30.0 [4.9]	0.45	(0.43–0.47)	0.88	(0.85–0.91)	0.53	(0.50–0.55)	0.75	(0.71–0.87)	0.39	(0.36–0.41)	0.30	(0.28–0.32)
Italy-Emilia Romagnae	46,445	29.7 [5.1]	0.31	(0.25–0.36)	1.03	(0.93–1.12)	0.39	(0.33–0.45)	0.51	(0.45–0.58)	0.30	(0.25–0.35)	0.39	(0.33–0.45)
Tuscany	157,916	32.3 [5.0]	0.27	(0.25–0.30)	2.22	(2.15–2.29)	0.31	(0.29–0.34)	0.63	(0.59–0.66)	0.40	(0.37–0.43)	0.36	(0.33–0.39)
The Netherlands	14,607	31.8 [4.9]	0.38	(0.28–0.48)	1.10	(0.93–1.27)	0.41	(0.31–0.51)	0.29	(0.21–0.38)	0.14	(0.08–0.20)	0.14	(0.08–0.20)
United Kingdomf	182,920	30.1 [6.0]	0.44	(0.41–0.47)	1.01	(0.96–1.05)	0.45	(0.42–0.48)	0.75	(0.72–0.79)	0.61	(0.57–0.64)	0.36	(0.33–0.39)
Wales	58,106	27.6 [6.1]	0.37	(0.32–0.42)	0.71	(0.64–0.78)	0.43	(0.37–0.48)	0.97	(0.89–1.05)	0.69	(0.62–0.76)	0.44	(0.39–0.49)
Total	1,082,673

^a at the start of pregnancy

^b standard deviation

^c 1 Jan 2004–31 Dec 2009

^d 1 Jan 2005–31 Dec 2010

^e 1 Jan 2008–31 Dec 2010

^f excluding Wales