Table 2 Reported pregnancy histories at the time of survey among women who had ever been pregnant

Total number of reported pregnancies per woman

0.50

   1

13 (13%)

20 (11%)

   2

20 (21%)

36 (20%)

   3

21 (22%)

47 (26%)

   4

19 (20%)

29 (16%)

   5

10 (10%)

23 (13%)

   ≥ 6

14 (14%)

29 (15%)

Mean (standard deviation) number of pregnancies

3.7 (2.0)

3.7 (2.4)

Mean (standard deviation) age at first pregnancy (years)

22.1 (4.8)

22.5 (4.8)

0.55

Ever had a live birth – total number of live births reported per woman

0.12

   0

7 (7%)

2 (1%)

   1

20 (21%)

34 (18%)

   2

22 (23%)

40 (22%)

   3

24 (25%)

51 (28%)

   4

11 (11%)

25 (14%)

   ≥ 5

13 (13%)

32 (17%)

Median (P5–P95)^b live births

2.5 (0–5)

3 (1–5)

Ever miscarried – total number of miscarriages^c reported per woman

0.07

   0

51 (53%)

125 (68%)

   1

30 (31%)

35 (19%)

   2

11 (11%)

15 (8%)

   ≥ 3

5 (5%)

9 (5%)

Median (P5–P95)^b miscarriages^c

0.5 (0–3)

0 (0–3)

Ever had a stillbirth – total number of stillbirths reported per woman

0.01

   0

86 (89%)

175 (95%)

   1

7 (7%)

9 (5%)

   ≥ 2

4 (4%)

0

Median (P5–P95)^b stillbirths

0 (0–1.25)

0 (0–0.75)

Ever had an ectopic pregnancy

0.17

   0

92 (95%)

180 (98%)

   1

5 (5%)

3 (2%)

   ≥ 2

0

1 (0.5%)

Median (P5–P95)^b ectopic

0 (0–1)

0 (0–0)

Women with a SLE diagnosis only

First pregnancy before SLE diagnosis

78 (80%)

-

-

First pregnancy after SLE diagnosis

19 (20%)

Age (years) at first pregnancy

   Mean (standard deviation) age at first pregnancy if before SLE diagnosis

22.1 (4.6)

-

-

   Mean (standard deviation) age at first pregnancy if after SLE diagnosis

26.6 (7.0)

Number of reported pregnancies per woman

   Mean (standard deviation) pregnancies whose first conception was before SLE diagnosis

3.7 (2.1)

-

-

   Mean (standard deviation) pregnancies whose first conception was after SLE diagnosis

3.6 (2.7)