OBJECTIVE: The aim of this study is to describe pregnancy outcomes among women 
with JIA.
METHODS: Women who gave birth in New South Wales (NSW), Australia, were linked 
to hospital discharge records from 2000 to 2010. Women with an ICD-10-AM code of 
M08 or M09 in the hospital records were considered to have JIA. Logistic 
regression was used to calculate odds ratios for pregnancy outcomes and the lack 
of independence in study outcomes for multiple pregnancies in the same woman was 
taken into account using generalized estimating equations.
RESULTS: During the study period, 601,659 women had 941,496 births. Of these 
births, 78 births could be attributed to 50 women with JIA. Of 78 JIA 
pregnancies, 53 (68%) were delivered by either Caesarean section (n = 40, 51%) 
or instrumental delivery (n = 13, 17%); compared with other women, those with 
JIA had significantly higher rates of pre-eclampsia, postpartum haemorrhage and 
severe maternal morbidity. Compared with other infants, those with mothers with 
JIA were more likely to be born prematurely, but were not at increased risk of 
being small for gestational age, requiring neonatal intensive care, having a low 
Apgar score at 5 min or severe neonatal morbidity.
CONCLUSION: Infants of women with JIA did not have an increased risk of adverse 
neonatal outcomes. Intensive obstetric care might be required during pregnancy 
for women with JIA given the increased risk of maternal morbidity.