scholarly journals Joint Effect of Maternal Tobacco Smoking and Pregestational Diabetes on Preterm Births and Congenital Anomalies: A Population-Based Study in Northern Italy

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Lucia Borsari ◽  
Carlotta Malagoli ◽  
Martha M. Werler ◽  
Kenneth J. Rothman ◽  
Marcella Malavolti ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Tobacco Smoking ◽  
Congenital Anomalies ◽  
Preterm Births ◽  
Prevalence Ratio ◽  
Joint Effect ◽  
Population Based ◽  
Pregestational Diabetes ◽  
Population Based Study ◽  
Adverse Pregnancy

Smoking and pregestational diabetes (PGD) are recognized risk factors for adverse pregnancy outcomes, but to date, no population-based study has investigated their joint effects. Using hospital discharges, we identified all women with PGD delivering in Emilia-Romagna region during 2007–2010 matched 1 : 5 with parturients without diabetes. Our study endpoints were preterm births and congenital anomalies. We measured interaction between PGD and maternal smoking, by calculating excess prevalence and prevalence ratio due to interaction, relative excess risk due to interaction (RERI), attributable proportion (AP), and the synergy index (S). Analyses were performed in the overall study population and in the subgroup whose PGD was validated through diabetes registers. The study included 992 women with PGD (10.5% smokers) and 4788 comparison women (11.9% smokers). The effects of PGD and maternal tobacco smoking were greater than additive for both preterm birth (excess prevalence due to interaction = 11.7%, excess ratio due to interaction = 1.5, RERI = 2.39, AP = 0.51, S = 2.82) and congenital anomalies (excess prevalence due to interaction = 2.2%, excess ratio due to interaction = 1.3, RERI = 1.33, AP = 0.49, S = 5.03). Joint effect on both endpoints was confirmed in the subgroup whose PGD status was validated. In conclusion, we found that maternal tobacco smoking and PGD intensify each other’s effect on preterm birth and congenital anomalies.

Increased risk of adverse pregnancy outcomes for women with migraines: A nationwide population-based study

Cephalalgia ◽  
2009 ◽  
Vol 30 (4) ◽  
pp. 433-438 ◽  
Author(s):  
H-M Chen ◽  
S-F Chen ◽  
Y-H Chen ◽  
H-C Lin
Keyword(s):  
Pregnancy Outcomes ◽  
Low Birthweight ◽  
Preterm Births ◽  
Population Based ◽  
Adverse Pregnancy Outcomes ◽  
Multivariate Logistic Regression ◽  
Population Based Study ◽  
Increased Risk ◽  
Preterm Babies ◽  
Adverse Pregnancy

Using a 3-year nationwide population-based database, this study aims to examine the risk of adverse pregnancy outcomes in women with migraines, including low birthweight (LBW), preterm birth, infants born small for gestational age, Caesarean section (CS) and pre-eclampsia. We identified a total of 4911 women with migraines who gave birth from 2001 to 2003, together with 24 555 matched women as a comparison cohort. Multivariate logistic regression analyses showed that after adjusting for potential confounders, the odds ratios were 1.16 [95% confidence intervals (CI) = 1.03–1.31, P = 0.014] for LBW, 1.24 (95% CI = 1.13–1.39, P < 0.001) for preterm births, 1.16 (95% CI = 1.07–1.24, P < 0.001) for CS and 1.34 (95% CI = 1.02–1.77, P = 0.027) for pre-eclampsia for women with migraines compared with unaffected mothers. We conclude that women with migraines were at increased risk of having LBW, preterm babies, pre-eclampsia and delivery by CS, compared with unaffected mothers.

Changes in incidence of iatrogenic and spontaneous preterm births over time: a population-based study

2016 ◽  
Vol 44 (5) ◽  
Author(s):  
Miha Lucovnik ◽  
Andreja Trojner Bregar ◽  
Lili Steblovnik ◽  
Ivan Verdenik ◽  
Ksenija Gersak ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Preterm Births ◽  
Population Based ◽  
Spontaneous Preterm Birth ◽  
Birth Rates ◽  
Population Based Study ◽  
Preterm Birth Rate ◽  
Iatrogenic Preterm Delivery ◽  
Over Time

AbstractTo examine the proportion of iatrogenic births among all preterm births over a 26-year period.A registry-based survey of preterm deliveries between 1987 and 2012 analyzed by the onset of labor: spontaneous with intact membranes, preterm premature rupture of membranes (PPROM) or iatrogenic. Stratification into categories by gestation (22 weeks to 27 weeks and 6 days, 28 weeks to 31 weeks and 6 days, 32 weeks to 33 weeks and 6 days, 34 weeks to 36 weeks and 6 days) was performed. Preterm birth rates were analyzed using the Mantel-Haenszel linear-by-linear associationOverall preterm birth rate was 5.9% (31328 deliveries) including 2358 (0.4%) before 28 completed weeks, 3388 (0.6%) between 28 weeks and 31 weeks 6 days, 3970 (0.8%) between 32 weeks and 33 weeks and 6 days, and 21611 (4.1%) between 34 weeks and 36 weeks and 6 days There was an increase in overall preterm birth rate (P<0.001). The rate of iatrogenic preterm births and PPROM increased over time (P<0.001 and P<0.014, respectively). Rates of spontaneous preterm birth decreased (P<0.001). After accounting for potential confounders, year of birth remained an independent risk factor for iatrogenic preterm delivery in all four gestational age categories (P<0.001).The incidence of iatrogenic preterm birth is increasing with a concomitant decrease in the incidence of spontaneous preterm birth. Attempts to analyze, interpret and decrease preterm birth rates should consider spontaneous and iatrogenic preterm births separately.

Prenatal care and preterm birth in the Western Brazilian Amazon: A population-based study

2021 ◽  
pp. 1-12
Author(s):  
Clariana V. Ramos de Oliveira ◽  
Paulo A. R. Neves ◽  
Barbara H. Lourenço ◽  
Rodrigo Medeiros de Souza ◽  
Maíra B. Malta ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Prenatal Care ◽  
Brazilian Amazon ◽  
Population Based ◽  
Population Based Study

scholarly journals The association between subclinical hypothyroidism and TPOAb positivity with infertility in a population-based study: Tehran thyroid study (TTS)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Batul Birjandi ◽  
Fahimeh Ramezani Tehrani ◽  
Atieh Amouzegar ◽  
Maryam Tohidi ◽  
Razieh Bidhendi Yarandi ◽  
...  
Keyword(s):  
Thyroid Autoimmunity ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Population Based Study ◽  
History Of ◽  
Autoimmune Condition ◽  
Biochemical Measurements ◽  
Adverse Pregnancy ◽  
Adjusted Logistic Regression

Abstract Background Thyroid autoimmunity(TAI) is the most prevalent autoimmune condition in women of fertile age. There are increasing data regarding the association of thyroid dysfunction and thyroid autoimmunity with adverse pregnancy outcomes but there is no consensus regarding infertility and TPOAb positivity; thus we aimed to evaluate the association between thyroid TPOAb positivity and infertility in females and males in a population-based study (TTS). Methods Cross-sectional study of 3197 female and male participants in Tehran Thyroid Study (TTS) at the framework of the Tehran Lipid and Glucose Study (TLGS). Data included biochemical measurements and a self-administered questionnaire. Results A total of 12,823 cases in phase 4, 3719 cases (2108 female and 1611 male) were analyzed. The mean TSH of the infertile female and male was 2.52 ± 2.68 μIU/ml and 3.24 ± 10.26 μIU/ml respectively. The TPO median(IQR) of women with and without a history of infertility were 6.05 (3.30–13.96)and 6.04 (3.17–11.15);(P = 0.613), they were 5.08 (3.20–125.68) and 5.31 (3.93–125.68);(P = 0.490) in male participants, respectively. Results of crude and adjusted logistic regression analysis of the development of infertility by thyroid function and TPOAb, except for fT4 in male subjects, depicted no association between infertility and other variables in both crude and adjusted models. Conclusion Based on the result, thyroid autoimmunity was not associated with infertility in both females and males.

scholarly journals Investigation of Metronidazole Use during Pregnancy and Adverse Birth Outcomes

2012 ◽  
Vol 56 (9) ◽  
pp. 4800-4805 ◽  
Author(s):  
Catherine A. Koss ◽  
Dana C. Baras ◽  
Sandra D. Lane ◽  
Richard Aubry ◽  
Michele Marcus ◽  
...  
Keyword(s):  
New York ◽  
Birth Weight ◽  
Preterm Birth ◽  
Low Birth Weight ◽  
Congenital Anomalies ◽  
New York State ◽  
Multivariable Analysis ◽  
Preterm Births ◽  
First Trimester ◽  
First Trimester Of Pregnancy

ABSTRACTTo assess whether treatment with metronidazole during pregnancy is associated with preterm birth, low birth weight, or major congenital anomalies, we conducted chart reviews and an analysis of electronic data from a cohort of women delivering at an urban New York State hospital. Of 2,829 singleton/mother pairs, 922 (32.6%) mothers were treated with metronidazole for clinical indications, 348 (12.3%) during the first trimester of pregnancy and 553 (19.5%) in the second or third trimester. There were 333 (11.8%) preterm births, 262 (9.3%) infants of low birth weight, and 52 infants (1.8%) with congenital anomalies. In multivariable analysis, no association was found between metronidazole treatment and preterm birth (odds ratio [OR], 1.02 [95% confidence interval [CI], 0.80 to 1.32]), low birth weight (OR, 1.05 [95% CI, 0.77 to 1.43]), or treatment in the first trimester and congenital anomalies (OR, 0.86 [0.30 to 2.45]). We found no association between metronidazole treatment during the first or later trimesters of pregnancy and preterm birth, low birth weight, or congenital anomalies.

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