Luteal Phase · Corpus Luteum Function
Timing luteal urinary pregnanediol glucuronide assessment using urinary luteinizing hormone: agreement with ultrasound-determined ovulation
Leiva R et al., 2026 Preprint
48 works
René Ecochard
Member, Service de Biostatistiques, CHU de Lyon
Regularly publishes research on Menstrual Cycle Hormones, Follicular Development, and Statistical Methods.
Subjects
48 works
Ultrasound · Follicular Monitoring
Using corpus luteum formation with dominant follicle collapse to improve the criteria for identifying ovulation
Bouchard TP et al., 2026
Effectiveness · Comparative Effectiveness
Accuracy of an Overnight Axillary-Temperature Sensor for Ovulation Detection: Validation in 194 Cycles
Shpaichler Y et al., 2025
Cycle Biomarkers · Hormonal Markers
Menstrual Cycle Heat Maps: Visualising menstrual cycle variability using hormone heat map arrays referenced to the ultrasound day of ovulation
Bouchard T et al., 2025
Effectiveness · Fertile Window Estimation
Participation of general practitioners and therapeutic patient education in the care of infertile couples
Bernot G et al., 2025
Cycle Physiology · Hormonal Regulation
Early menstrual cycle impacts of oestrogen and progesterone on the timing of the fertile window
Ecochard R et al., 2024
Cycle Physiology · Cycle Variability
Evidence that the woman's ovarian cycle is driven by an internal circamonthly timing system
Ecochard R et al., 2024
Technology · Cycle Tracking Apps
Helping Patients to Predict and Confirm Ovulation with the Use of Combined Urinary Hormonal and Smartphone Technology: A Proof-of-Concept Retrospective Descriptive Case Series
Leiva R et al., 2024
Luteal Phase · Luteal Phase Deficiency
Relationship Between Steroid Hormone Profile and Premenstrual Syndrome in Women Consulting for Infertility or Recurrent Miscarriage
Turner JV et al., 2024
Cycle Physiology · Cycle Variability
The menstrual cycle is influenced by weekly and lunar rhythms
Ecochard R et al., 2024
Menstrual cycle: influence of circalunar and circaseptan rhythms
Ecochard R et al., 2023 Conference presentation
Luteal Phase · Corpus Luteum Function
Distinct urinary progesterone metabolite profiles during the luteal phase
Abdullah S et al., 2023
Ovarian Hormones · Progesterone
Descriptive analysis of the relationship between progesterone and basal body temperature across the menstrual cycle
Écochard R et al., 2022
Outcomes and Effectiveness · Live Birth Rates
Ovarian Stimulation Strategies for Intrauterine Insemination in Couples with Unexplained Infertility - A Systematic Review and Individual Participant Data Meta-analysis
Wessel JA et al., 2022 Conference presentation
Environmental Exposures · Radiation and Electromagnetic Exposure
Nocturnal light pollution and clinical signs of ovulation disorders
Garmier-Billard M et al., 2019
Biomarkers · Urinary Hormone Monitoring
Pilot observational prospective cohort study on the use of a novel home-based urinary pregnanediol 3-glucuronide (PDG) test to confirm ovulation when used as adjunct to fertility awareness methods (FAMs) stage 1
Leiva R et al., 2019
Cycle Physiology · Hormonal Regulation
The Menstrual Cycle Phases Are Like 'Body Seasons'
Ecochard R, 2019
Ovarian Hormones · Progesterone
A Quadriparametric Model to Describe the Diversity of Waves Applied to Hormonal Data
Abdullah S et al., 2018
Cycle Biomarkers · Hormonal Markers
Hormonal Predictors of Abnormal Luteal Phases in Normally Cycling Women
Abdulla SH et al., 2018
Luteal Phase · Corpus Luteum Function
Characterization of hormonal profiles during the luteal phase in regularly menstruating women
Ecochard R et al., 2017
The use of beta-binomial distributions to describe hormone profiles in the normal menstrual cycle
Abdulla S et al., 2017 Conference presentation
Biomarkers · Urinary Hormone Monitoring
Urinary Luteinizing Hormone Tests: Which Concentration Threshold Best Predicts Ovulation?
Leiva RA et al., 2017
Ovulation Physiology · Anovulation
Random serum progesterone threshold to confirm ovulation
Leiva R et al., 2015
Effectiveness · Fertile Window Estimation
Self-identification of the clinical fertile window and the ovulation period
Ecochard R et al., 2015
Ovarian Hormones · Progesterone
Characterization of follicle stimulating hormone profiles in normal ovulating women
Ecochard R et al., 2014
Cycle Physiology · Hormonal Regulation
Relationships between the luteinizing hormone surge and other characteristics of the menstrual cycle in normally ovulating women
Direito A et al., 2013
Ovulation Physiology · Anovulation
Use of urinary pregnanediol 3-glucuronide to confirm ovulation
Ecochard R et al., 2013
Cycle Physiology · Cycle Variability
Multilevel model to assess sources of variation in follicular growth close to the time of ovulation in women with normal fertility: a multicenter observational study
Mikolajczyk RT et al., 2008
Measurement and Statistics · Statistical Methods
Heterogeneity in fecundability studies: issues and modelling
Ecochard R, 2006
Outcomes and Effectiveness · Cumulative Versus Per Cycle Reporting
Heterogeneity, the masked part of reproductive technology success rates
Ecochard R, 2005
Biomarkers · Cervical Mucus
Mucus observations in the fertile window: a better predictor of conception than timing of intercourse
Bigelow JL et al., 2004
Neuroendocrinology · Gonadotropins
Relationship between sleep and secretion of gonadotropin and ovarian hormones in women with normal cycles
Touzet S et al., 2002
Cycle Biomarkers · Hormonal Markers
Chronological aspects of ultrasonic, hormonal, and other indirect indices of ovulation
Ecochard R et al., 2001
Breast Health · Benign Breast Conditions
Gonadotropin level abnormalities in women with cyclic mastalgia
Ecochard R et al., 2001
Ovulation Agents · Selective Estrogen Receptor Modulators
A randomized prospective study comparing pregnancy rates after clomiphene citrate and human menopausal gonadotropin before intrauterine insemination
Ecochard R et al., 2000
Ovarian Hormones · Estrogen
Gonadotropin and body mass index: high FSH levels in lean, normally cycling women
Ecochard R et al., 2000
Measurement and Statistics · Statistical Methods
Multivariate parametric random effect regression models for fecundability studies
Ecochard R et al., 2000
Ultrasound · Follicular Monitoring
Sensitivity and specificity of ultrasound indices of ovulation in spontaneous cycles
Ecochard R et al., 2000
Cycle Physiology · Ovulation
Side of ovulation and cycle characteristics in normally fertile women
Ecochard R et al., 2000
Semen Analysis · Reference Standards
The mean of sperm parameters in semen donations from the same donor. An important prognostic factor in insemination
Ecochard R et al., 1999
Effectiveness · Typical and Perfect Use
[Analysis of natural family planning failures. In 7007 cycles of use]
Ecochard R et al., 1998
Measurement and Statistics · Statistical Methods
Random Effect Models in the Statistical Analysis of Human Fecundability Data: Application to artificial insemination with sperm from donor
Ecochard R, 1997 Other
Ovulation Agents · Selective Estrogen Receptor Modulators
[Clomiphene citrate or hMg: which ovarian stimulation to chose before intra-uterine inseminations? A meta-analysis]
Gallot-Lavallée P et al., 1995
Outcomes and Effectiveness · Cumulative Versus Per Cycle Reporting
Cumulative conception rate following intrauterine artificial insemination with husband's spermatozoa: influence of husband's age
Mathieu C et al., 1995
Reproductive Aging · Ovarian Aging
Age-related changes of the population of human ovarian follicles: increase in the disappearance rate of non-growing and early-growing follicles in aging women
Gougeon A et al., 1994
Return of Fertility · Postpartum Charting
[Characteristics of the menstrual cycles during the postpartum period without breast feeding according to the nature of the first period: ovulatory or anovulatory]
Frey R et al., 1989
Return of Fertility · Postpartum Charting
[Can analysis of previous post-partum periods provide prognostic indicators on the return of fertility after delivery?]
Ecochard R et al., 1988
Biomarkers · Cervical Mucus
[Self-examination of cervical mucus to determine the fertile period]
Ecochard R et al., 1984
