Prospective study of time to pregnancy and adverse birth outcomes  

Oleh:

Wise, Lauren A. ; Mikkelsen, Ellen M. ; Sorensen, Henrik Toft

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Fertility and Sterility (keterangan: ada di ClinicalKey) vol. 103 no. 04 (Apr. 2015), page 1065-1073.
Topik: Fertility; preterm birth; low birth weight; prospective study; cohort study

Ketersediaan

Perpustakaan FK Nomor Panggil: F02.K Non-tandon: tidak ada Tandon: 1

Lihat Detail Induk

Isi artikel

Objective To investigate the association between time to pregnancy (TTP) and adverse birth outcomes. Design Prospective cohort study. Setting Not applicable. Patient(s) A total of 3,521 singletons born to women aged 18-40 years at cohort entry. Intervention(s) None. Main Outcome Measure(s) Selected birth outcomes, including preterm birth (PTB, <37 weeks' gestation), low birth weight (<2,500 g), small for gestational age, large for gestational age, and placental disorders, ascertained from the Danish Medical Birth Registry and Danish National Registry of Patients. Risk ratios (RRs) and 95% confidence intervals (CIs) were estimated using log-binomial regression, with adjustment for potential confounders and fertility treatment. Result(s) Multivariable RRs for PTB in relation to TTP of 3–5, 6–11, and =12 vs. <3 cycles were 1.59 (95% CI 0.94–2.69), 0.85 (95% CI 0.48–1.50), and 1.57 (95% CI 0.93–2.65). The association was slightly stronger for spontaneous PTB (TTP =12 vs. <3 cycles: RR 1.69, 95% CI 0.84–3.42) than for medically indicated PTB (RR 1.39, 95% CI 0.62–3.12). Longer TTPs (=12 cycles) were associated with increased risks of low birth weight (RR 1.80, 95% CI 0.97–3.35), cesarean delivery (RR 1.64, 95% CI 1.27–2.12), placental disorders (RR 2.21, 95% CI 1.07–4.56), ischemic placental disease (RR 1.56, 95% CI 0.99–2.44), pre-eclampsia (RR 1.45, 95% CI 0.79–2.65), and postpartum hemorrhage (RR 1.58, CI 1.14–2.19), and decreased risks of macrosomia (=4,500 g; RR 0.63, 95% CI 0.35–1.13) and large for gestational age (RR 0.76, 95% CI 0.58–1.00). Longer TTP showed little association with small for gestational age. Conclusion(s) In a prospective cohort study of Danish pregnancy planners, delayed conception was a marker for adverse birth outcomes, after accounting for fertility treatment.

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