Willis SK

No ORCID on file · 5 papers in corpus · active 2019-2025
2025
Self-reported diagnoses of dietary allergens and fecundability in a North American cohort.
Human reproduction (Oxford, England) ·doi:10.1093/humrep/deae277

Study questionTo what extent are self-reported diagnoses of food allergies associated with fecundability, the per-cycle probability of conception?Summary answerFecundability was not appreciably associated with self-reported food allergy dia…

2022
A prospective study of preconception asthma and spontaneous abortion.
Annals of epidemiology ·doi:10.1016/j.annepidem.2022.02.006

PurposeTo evaluate the relationships among history of asthma, asthma severity, and spontaneous abortion (SAB).MethodsPregnancy Study Online is a preconception cohort study of North American couples. During the preconception period, female p…

2022
Female dietary patterns and outcomes of in vitro fertilization (IVF): a systematic literature review.
Nutrition journal ·doi:10.1186/s12937-021-00757-7

BackgroundInfertility affects up to 15% of couples. In vitro fertilization (IVF) treatment has modest success rates and some factors associated with infertility and poor treatment outcomes are not modifiable. Several studies have assessed t…

2021
Maternal age at birth and daughter's fecundability.
Human reproduction (Oxford, England) ·doi:10.1093/humrep/deab057

Study questionDo daughters of older mothers have lower fecundability?Summary answerIn this cohort study of North American pregnancy planners, there was virtually no association between maternal age ≥35 years and daughters' fecundability.Wha…

2019
Fecundability in relation to use of fertility awareness indicators in a North American preconception cohort study.
Fertility and sterility ·doi:10.1016/j.fertnstert.2019.06.036

ObjectiveTo quantify the frequency of use of selected fertility awareness indicators and to assess their influence on fecundability.DesignWeb-based prospective cohort study.SettingNot applicable.Patient(s)Female pregnancy planners, aged 21-…