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https://spacefem.com/pregnant/charts/duedate1.php?minweek=34
65 rows · 11475 of the deliveries were as a result of labor occuring spontaneously. The chart only …
https://obgyn.onlinelibrary.wiley.com/doi/full/10.1002/uog.2616
The rate of spontaneous delivery before 34 weeks was 10.9% (19/174). The mean gestational age at delivery for those 19 women was 30.2 ± 3.4 weeks instead of the 36.6 ± 1.3 weeks observed among those who delivered after 34 weeks. Some 74% (14/19 cases) of these preterm births occurred at or after 29 weeks…
https://www.researchgate.net/publication/5668738_Risk_Factors_for_Spontaneous_Preterm_Delivery_Before_34_Weeks_of_Gestation_Among_Taiwanese_Women
To identify the risk factors for spontaneous preterm delivery before 34 weeks of gestation among Taiwanese women. This retrospective cohort study involved 36,453 Taiwanese women who delivered ...
https://datayze.com/labor-probability-chart
Like [1], most online models predict the probability of spontaneous labor before 37 weeks is approximately zero. As you can see from above we estimate the probability of spontaneous labor before 37 weeks as 9.6%, matching the number from the CDC. If you're past 37 weeks…
https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.2616
presents the diagnostic values for prediction of delivery before 34 weeks for each of these four indicators, with the best cut-off values. No women were lost to follow-up in the 27-week examination period. Median cervical length at 27 weeks was 35.0 (range, 1–57) mm, and the rate of spontaneous delivery before 34 weeks was 9.2% (14/153 cases ...
https://www.nejm.org/doi/10.1056/NEJMoa1511014
The risk of spontaneous delivery before 34 weeks was quantified as the odds ratio and 95% confidence interval and was assessed with the use of Kaplan–Meier analysis, 20,21 in …
http://onlinelibrary.wiley.com/doi/10.1111/j.1471-0528.2009.02293.x/abstract
Samples were analysed from 28 women with spontaneous onset of labour and delivery before 37 weeks of gestation, and 64 who delivered at term. Saliva progesterone was lower in the 12 women delivering before 34 weeks than in those delivering later, between 34 and 37 weeks (P = 0.007) or at term (P = 0.009). Measurement of saliva progesterone may ...
https://www.nejm.org/doi/10.1056/NEJMoa067815
Women with a short cervix (15 mm or less in length) assigned to treatment with vaginal progesterone had a significantly lower rate of spontaneous delivery before 34 weeks of gestation than did wome...
https://icdlist.com/icd-10/O75.82
O75.82 is a billable code used to specify a medical diagnosis of onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section. Code valid for the year 2020
https://www.icd10data.com/ICD10CM/Codes/O00-O9A/O60-O77/O60-
A disorder characterized by delivery of a viable infant before the normal end of gestation. Typically, viability is achievable between the twentieth and thirty-seventh week of gestation. Childbirth before 37 weeks of pregnancy (259 days from the first day of the mother's last menstrual period, or …
https://www.researchgate.net/publication/7493821_Cervical_assessment_at_22_and_27_weeks_for_the_prediction_of_spontaneous_birth_before_34_weeks_in_twin_pregnancies_Is_transvaginal_sonography_more_accurate_than_digital_examination
Cervical assessment at 22 and 27 weeks for the prediction of spontaneous birth before 34 weeks in twin pregnancies: Is transvaginal sonography more accurate than digital examination?
https://www.sciencedirect.com/science/article/abs/pii/S102845590860008X
To identify the risk factors for spontaneous preterm delivery before 34 weeks of gestation among Taiwanese women. Materials and Methods. This retrospective cohort study involved 36,453 Taiwanese women who delivered between July 1990 and December 2003. Pregnancies complicated by multiple gestation, fetal anomalies, and iatrogenic preterm births ...
http://www.aetna.com/cpb/medical/data/500_599/0510.html
This subpopulation consisted of high-risk pregnancies, defined by the finding of cervical length less than or equal to 10th centile at 20 to 24 weeks' gestation or history of either spontaneous delivery before 34 weeks or miscarriage after 12 weeks. Primary outcome was delivery before 34 weeks.
https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-018-1984-x
Aug 22, 2018 · According to the results of unadjusted logistic regression analysis, the rates of perinatal outcomes such as gestational diabetes, gestational hypertension, spontaneous preterm delivery before 34 weeks of gestation spontaneous late preterm delivery between 34 and 37 weeks of gestation, SGA, and cesarean delivery increased with maternal age ...
https://core.ac.uk/download/pdf/82149088.pdf
born before 34 weeks have an increased frequency of permanent neurologic handicaps and mortality [1,2]. The cause of early preterm delivery (defined as less than 34 weeks of gestation) remains elusive. Risk fac-tors for early preterm delivery include hypertension, fetal growth restriction, infection, spontaneous rupture
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