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Maternal morbidity during childbirth hospitalization in California. In another study, Whiteman et al.

To establish the occurrence of recurrent PTB among women with normal BMI, we analyzed 54, women with two consecutive live births and normal BMI at the time of the first pregnancy. Our finding is in line with prior studies that have demonstrated that recurrent PTB is related to less than appropriate gestational weight gain [ 8 ] and a change from normal to underweight BMI category between pregnancies [ 5 ].

The factors related to increased odds for recurrent PTB compared to recurrent term birth were negative or no weight change between pregnancies aOR: Does body mass index adequately capture the relation of body composition and body size to health outcomes?

Interestingly, in our study a short IPI was also associated with increased risks for women whose first birth was term and second was preterm, as well as the reverse first birth preterm and second termalthough risks of short IPI were highest among women with recurrent PTB and a PTB after a term birth.

The dataset has been previously described in more detail [ 9 ].

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The primary outcome of study was recurrent preterm birth and recurrent term birth was used as the reference. Am J Public Health.

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The datasets include maternal and pregnancy characteristics from birth certificates combined with clinical details from birth hospitalization and link multiple births to the same mother. Maternal age in pregnancy l d.

Information on gestational age at delivery was based on obstetric estimate provided on the birth certificate.

An overview of mortality and sequelae of preterm birth from infancy to adulthood. The impact of exposure misclassification on associations between prepregnancy BMI and adverse pregnancy outcomes. Find the right ingredients, flavors, and dishes to 24453 with in your own home.

Find leh by Suzan L Carmichael. Italian cuisine pdf Among underweight women with PTB in the first pregnancy, Identification of potentially modifiable risk factors specific to women with low BMI could help in counseling underweight women who have experienced a PTB. The study population was categorized into outcome groups based on the first and the second birth as: Our objective was to identify factors associated with recurrent preterm birth among underweight women.

In addition, after removing cases with maternal co-morbidities any pre-existing or gestational hypertension, diabetes or preeclampsia in pregnancy 1 or pregnancy 2 the results of the multivariable modeling remained largely the same except maternal age, height and IPI were no longer significant predictors for the outcome of PTB-Term but maternal education some high school or less vs.

Global database on body mass index. Recurrent preterm birth among underweight women was associated with younger age, short inter-pregnancy interval, and negative or no weight change between pregnancies.

What factors are related to recurrent preterm birth among underweight women?

We analyzed 4, women with underweight BMI in the first pregnancy. The authors report no disclosures.

By examining specific factors related to recurrent preterm birth among women with different severity of underweight, this study adds to the existing literature that has not looked at specifically the le women. A historical cohort study.

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Between andthere werewomen who delivered their first and second singleton live births in California. Find articles by Jonathan A Mayo. Each lfy more thanpreterm infants are born in the United States at less than 37 weeks of gestation [ 1 ].

White paper on preterm birth: Data on maternal prepregnancy weight and height were self-reported. Although several studies have shown an association between maternal prepregnancy underweight and ldy risk of PTB [ 6712 ], only a few studies have investigated maternal underweight and the risk of recurrent PTB [ 58 ]. Maternal psychological stress and distress as predictors of low birth weight, prematurity and intrauterine growth retardation.

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Please review our privacy policy. In addition, the more recent cohort in our study and the population-based data employed increased the generalizability of our findings.

The content is solely the ely of the authors and does not necessarily represent the official views of the NIH. Among women in all BMI categories, the factors related to recurrent PTB include a decrease from normal to underweight prepregnancy BMI between pregnancies [ 5 ], a ely inter-pregnancy interval IPIhistory of prior PTB at 28—32 weeks gestation and younger maternal age.

Recurrence of preterm birth in singleton and twin pregnancies.

What factors are related to recurrent preterm birth among underweight women?

244543 Author information Copyright and License information Disclaimer. After excluding cases with indicated PTB from the analysis, the maternal and obstetric characteristics remained unchanged data not shown. The preterm prediction study: