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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: J Autoimmun. 2019 May 27;103:102287. doi: 10.1016/j.jaut.2019.05.015

Table 2.

Rate per 1000a (and frequency) of obstetric and neonatal outcomes for singleton pregnancies from the Consortium of Safe Labor 2002–2008 (n = 205521).

Women without autoimmune disease (n = 204384) Autoimmune Disease
Type I Diabetes (n = 507) Systemic Lupus Erythematosus (n = 202) Crohn’s Disease (n = 169) Multiple Sclerosis (n = 146) Rheumatoid Arthritis (n = 123)
Cesarean Delivery 278.5 (56926) 670.6 (340)b 391.1 (79)b 360.9 (61)b 424.7 (62)b 390.2 (48)b
Prelabor cesarean 113.6 (23218) 270.2 (137)b 183.2 (37)b 183.4 (31)b 232.9 (34)b 211.4 (26)b
After spontaneous labor 93.0 (19016) 195.3 (99)b 123.8 (25) 118.3 (20) 123.3 (18) 130.1 (16)
After induced labor 71.9 (14692) 205.1 (104)b 84.2 (17) 59.2 (10) 68.5 (10) 48.8 (6)
Preterm Birth 111.0 (22701) 426.0 (216)b 376.2 (76)b 195.3 (33)b 191.7 (28)b 178.8 (22)b
Spontaneous 78.4 (16038) 248.5 (126)b 232.7 (47)b 130.1 (22)b 143.8 (21)b 154.4 (19)b
Indicated 17.8 (3650) 145.9 (74)b 103.9 (21)b 29.5 (5)b 27.3 (4) 16.2 (2)
Preeclampsia 46.4 (9498) 159.7 (81)b 138.6 (28)b 82.8 (14)b 61.6 (9) 81.3 (10)
NICU Admission 115.4 (23593) 408.2 (207)b 282.1 (57)b 195.3 (33)b 164.3 (24) 195.1 (24)b
Neonatal Respiratory Distress Syndrome 31.1 (6357) 130.1 (66)b 113.8 (23)b 47.3 (8) 34.0 (5) 48.7 (6)
Small for Gestational Age 109.3 (22350) 65.0 (33)b 178.2 (36)b 124.2 (21) 75.3 (11) 170.7 (21)b
Perinatal Mortality 5.9 (1214) 13.8 (7)b 19.8 (4)b 5.9 (1) 0 (0) 0 (0)
a

Rates per 1000 are specific for each autoimmune disease category (rate = (outcome n/autoimmune disease N)*1000).

b

p < 0.05 indicates rates among women with autoimmune disease different than rates among women without autoimmune disease. P-values obtain using generalized estimating equations to account for women who had more than one pregnancy in the study.