المؤلفون: Ananth, Cande V., Getahun, Darios, Peltier, Morgan R., Satihu, Hamisu M., Vintziteos2, Anthony M.

المصدر: American Journal of Obstetrics & Gynecology; Sep2006, Vol. 195 Issue 3, p643-650, 8p, 5 Charts, 2 Graphs

مصطلحات موضوعية: PREMATURE labor, DELIVERY (Obstetrics), DURATION of pregnancy, PREMATURE infants, LABOR (Obstetrics), CESAREAN section, CHILDBIRTH, PRENATAL diagnosis, OBSTETRICAL research

مصطلحات جغرافية: MISSOURI

مستخلص: Objective: Despite the increased tendency of preterm birth to recur, little is known with regard to recurrence risks for spontaneous and medically indicated preterm birth as well as recurrence risks in relation to severity of preterm birth. We examined the recurrence of spontaneous and medically indicated preterm birth. Study design: A population-based, retrospective cohort study of births in Missouri (1989 to 1997) was carried out with analyses restricted to women who delivered their first 2 consecutive singleton live births (n = 154,809). Women who experienced spontaneous onset of labor and subsequently delivered preterm (less than 35 weeks) were classified as spontaneous preterm birth. Medically indicated preterm birth included women who delivered preterm through a labor induction or a prelabor cesarean delivery. Risk and odds ratio of preterm birth recurrence were derived from fitting multivariate conditional logistic regression models after adjusting for potential confounders. Results: If the first pregnancy resulted in a spontaneous preterm birth, then affected women were more likely to deliver preterm spontaneously (adjusted odds ratio 3.6, 95% confidence interval 3.2, 4.0) and also as a medically indicated preterm birth (odds ratio 2.5, 95% confidence interval 2.1, 3.0) in the second birth. Similarly, if the first pregnancy resulted in a medically indicated preterm birth, affected women were 10.6-fold (95% confidence interval 10.1, 12.4) more likely to deliver preterm because of medical indications in the second pregnancy as well as preterm spontaneously (odds ratio 1.6, 95% confidence interval 1.3, 2.1). The greatest risk of recurrence of preterm birth in the second pregnancy tended to occur around the same gestational age as preterm birth in the first pregnancy, regardless of the clinical subtype. Conclusion: The observation that spontaneous preterm birth is not only associated with increased recurrence of spontaneous but also medically indicated preterm birth and vice versa, suggests that the 2 clinical subtypes may share common etiologies. [ABSTRACT FROM AUTHOR]

: Copyright of American Journal of Obstetrics & Gynecology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: McManemy, Julie, Cooke, Erinn, Amon, Erol, Leet, Terry

المصدر: American Journal of Obstetrics & Gynecology; Jun2007, Vol. 196 Issue 6, p576-576, 1p

مصطلحات موضوعية: PREMATURE labor, CHILDBIRTH, MOTHERS, WOMEN'S health

مصطلحات جغرافية: MISSOURI

مستخلص: Objective: To estimate recurrence risk of preterm delivery in third births. Study Design: We conducted a population-based cohort study of Missouri mothers who delivered 3 consecutive singleton live births during 1989-1997. The recurrence risk was computed for 4 cohorts based on prior preterm delivery status and adjusted using Mantel-Haenszel stratified analysis. Results: The study population included 19,025 third births. The recurrence risk ranged from 42% (for women with 2 prior preterm deliveries), through 21% (term/preterm) and 13% (preterm/term), to 5% (term/term). The recurrence risk was highest (57%) for women with 2 prior very preterm deliveries (21-31 weeks) and lowest (33%) for those with 2 prior moderate preterm deliveries (32-36 weeks). The recurrence risk was less pronounced for women with 1 prior very or moderate preterm delivery. Conclusion: These data show a strong association between prior preterm delivery and recurrence risk, which is affected by the frequency, order, and severity of prior preterm births. [Copyright &y& Elsevier]

: Copyright of American Journal of Obstetrics & Gynecology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Almberg, Kirsten S.¹ almberg@uic.edu, Turyk, Mary¹ mturyk1@uic.edu, Jones, Rachael M.² rjones25@uic.edu, Anderson, Robert¹ tallbob@uic.edu, Graber, Judith^1,3 jmg502@eohsi.rutgers.edu, Banda, Elizabeth¹ ebanda2@uic.edu, Waller, Lance A.⁴ lwaller@emory.edu, Gibson, Roger⁵ roger.gibson@health.mo.gov, Stayner, Leslie T.¹

المصدر: Environmental Research. Oct2014, Vol. 134, p420-426. 7p.

مصطلحات موضوعية: *SOYBEAN yield, *CORN yields, *PESTICIDE pollution, *CHILDBIRTH, *LOW birth weight, *PREMATURE labor

مصطلحات جغرافية: MISSOURI

مستخلص: Background Missouri is an agriculturally intensive state, primarily growing corn and soybeans with additional rice and cotton farming in some southeastern counties. Communities located in close proximity to pesticide-treated fields are known to have increased exposure to pesticides and may be at increased risk of adverse birth outcomes. The study aims were to assess the relationship between county-level measures of crop-specific agricultural production and adverse birth outcomes in Missouri and to evaluate the most appropriate statistical methodologies for doing so. Methods Potential associations between county level data on the densities of particular crops and low birth weight and preterm births were examined in Missouri between 2004−2006. Covariates considered as potential confounders and effect modifiers included gender, maternal race/ethnicity, maternal age at delivery, maternal smoking, access to prenatal care, quarter of birth, county median household income, and population density. These data were analyzed using both standard Poisson regression models as well as models allowing for temporal and spatial correlation of the data. Results There was no evidence of an association between corn, soybean, or wheat densities with low birth weight or preterm births. Significant positive associations between both rice and cotton density were observed with both low birth weight and preterm births. Model results were consistent using Poisson and alternative models accounting for spatial and temporal variability. Conclusions The associations of rice and cotton with low birth weight and preterm births warrant further investigation. Study limitations include the ecological study design and limited available covariate information. [ABSTRACT FROM AUTHOR]