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BackgroundTo compare pregnancy complications and birth outcomes for women experiencing nausea and vomiting in pregnancy, or nausea only, with symptom-free women.MethodsPregnancies from the Norwegian Mother and Child Cohort Study (n = 51 675), a population-based prospective cohort study, were examined. Data on nausea and/or vomiting during gestation and birth outcomes were collected from three questionnaires answered between gestation weeks 15 and 30, and linked with data from the Medical Birth Registry of Norway. Chi-squared tests, one way analysis of variance, multiple linear and logistic regression analyses were used.ResultsWomen with nausea and vomiting (NVP) totalled 17 070 (33 %), while 20 371 (39 %) experienced nausea only (NP), and 14 234 (28 %) were symptom-free (SF). When compared to SF women, NVP and NP women had significantly increased odds for pelvic girdle pain (adjusted odds ratio, aOR, 2.26, 95 % confidence interval, 95 % CI, 2.09–2.43, and aOR 1.90, 95 % CI, 1.76–2.05, respectively) and proteinuria (aOR 1.50, 95 % CI 1.38–1.63, and 1.20, 95 % CI 1.10–1.31, respectively). Women with NVP also had significantly increased odds for high blood pressure (aOR 1.40, 95 % CI 1.17–1.67) and preeclampsia (aOR 1.13, 95 % CI 1.01–1.27). Conversely, the NVP and NP groups had significantly reduced odds for unfavourable birth outcomes such as low birth weight infants (aOR 0.72, 95 % CI 0.60–0.88, and aOR 0.73, 95 % CI 0.60–0.88, respectively) and small for gestational age infants (aOR 0.78, 95 % CI 0.73–0.84, and aOR 0.87, 95 % CI 0.81–0.93, respectively).ConclusionsWe found that women with NVP and NP are more likely to develop pregnancy complications, yet they display mostly favourable delivery and birth outcomes.Electronic supplementary materialThe online version of this article (doi:10.1186/s12884-015-0580-6) contains supplementary material, which is available to authorized users.

The objective of this cross-sectional study was to explore the associations between pain locations, responses to the posterior pelvic pain provocation (P4) test, responses to the active straight leg raise (ASLR) test and disability in late pregnancy. 283 women in gestation week 30 (mean age 31.3 years; 59% nullipara) completed a questionnaire (including pain drawing and Disability Rating Index, DRI). A physiotherapist blinded for the questionnaire data assessed responses to the P4 and ASLR tests. The pain drawing was used to: 1) distinguish between Pelvic girdle pain (PGP) and low back pain (LBP); 2) discriminate between pain locations within the pelvic area. A large variation was found in DRI within each pain location group. Women with PGP were more afflicted than the women with LBP and those without PGP. Highest DRI score was reported by women having combined symphysis pain and bilateral posterior pain. The multivariate analyses showed that results from P4 and ASLR contributed independently to DRI. Taken together, pain location combined with responses to P4 and ASLR tests are relevant when evaluating affliction in pregnant women with possible PGP.