Table 1: Interpregnancy intervals and maternal outcomes.

Interpregnancy Interval

< 18 Mo.

18-59 Mo.

≥ 60 Mo.

p

Mother-Infant Dyads no. (%)

70 (34)

85 (42)

50 (24)

NS

Diabetes mellitus type 1 no. (%)

29 (41)

27 (32)

9 (18)

0.025

Diabetes mellitus type 2 no. (%)

41 (59)

58 (68)

41 (82)

Race Black no. (%)

14 (20)

25 (29)

16 (32)

NS

White no. (%)

40 (57)

38 (45)

15 (30)

Hispanic no. (%)

12 (17)

14 (17)

13 (26)

Other no. (%)

4 (6)

8 (9)

6 (12)

Mothers age (y) median (IQR)

31 (28-36)

31 (27-34)

34 (31-37)

0.004

BMI kg/m2 median (IQR)

34 (31-40)

35 (30-40)

36 (31-43)

NS

BMI kg/m2 ≥ 35 no. (%)

32 (46)

44 (52)

32 (64)

NS

Smokers no. (%)

3 (4)

10 (12)

9 (18)

0.02

Never smoked no. (%)

55 (79)

64 (75)

32 (64)

Former smokers no. (%)

12 (17)

11 (13)

9 (18)

Percent hemoglobin A1C median (IQR)

6 (5.5-6.9)

6 (5.7-6.9)

6 (5.5-6.7)

NS

Mode of Delivery - Vaginal no. (%)

24 (34)

34 (40)

20 (40)

NS

indentation cesarean no. (%)

4 (6)

10 (12)

8 (16)

indentation cesarean no. (%)

42 (60)

41 (48)

22 (44)

Mother length of stay (d) median (IQR)

4 (3-4)

3 (3-4)

4 (3-4)

NS