Variable selection for discrete survival model with frailty in presence of left truncation and right censoring: Studying association of environmental toxicants on time‐to‐pregnancy
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DOI: 10.1002/sim.9609
Abstract: Understanding the association between mixtures of environmental toxicants and time‐to‐pregnancy (TTP) is an important scientific question as sufficient evidence has emerged about the impact of individual toxicants on reproductive health and that individuals are exposed… read more here.
Keywords: discrete survival; toxicants time; environmental toxicants; left truncation ... See more keywords
Couples' prepregnancy body mass index and time to pregnancy among those attempting to conceive their first pregnancy.
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DOI: 10.1016/j.fertnstert.2020.05.041
Abstract: OBJECTIVE To explore the relationship between couples' prepregnancy body mass index (BMI) and time to pregnancy (TTP) among those with no prior gravidity. DESIGN Retrospective cohort study. SETTING Local maternal/child health care or family-planning service… read more here.
Keywords: body mass; pregnancy; time pregnancy; prepregnancy body ... See more keywords
Shorter Time to Pregnancy With Increasing Preconception Carotene Concentrations Among Women With 1–2 Previous Pregnancy Losses
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DOI: 10.1093/aje/kwy101
Abstract: Although maternal nutrition may affect fecundity, associations between preconception micronutrient levels and time to pregnancy (TTP) have not been examined. We assessed the relationship between preconception fat-soluble micronutrient concentrations and TTP among women with 1-2… read more here.
Keywords: pregnancy; preconception; carotene; pregnancy losses ... See more keywords
Asthma treatment impacts time to pregnancy: evidence from the international SCOPE study
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DOI: 10.1183/13993003.02035-2017
Abstract: Asthma is a common chronic disease affecting the lives of reproductive age women and is associated with 8–13% of pregnancies [1]. While maternal asthma has been consistently associated with significant perinatal morbidities and mortality [2,… read more here.
Keywords: study; asthma treatment; time pregnancy; evidence ... See more keywords
Conditioning on Parity in Studies of Perfluoroalkyl Acids and Time to Pregnancy: An Example from the Danish National Birth Cohort
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DOI: 10.1289/ehp1493
Abstract: Background: Previous studies have investigated the associations between perfluoroalkyl acids (PFAAs) in women and time to pregnancy (TTP). Inconsistent results may be explained by differences in conditioning on parity. Objectives: We used causal directed acyclic… read more here.
Keywords: pregnancy; conditioning parity; time pregnancy; perfluoroalkyl acids ... See more keywords