Cycle Across the Lifespan · Cycle and General Health
Modeling fertile window differences across the reproductive lifespan with quantitative urine hormone monitoring of the menstrual cycle
Bouchard TP et al., 2026
78 works
Richard J Fehring
Professor Emeritus, College of Nursing, Marquette University
Regularly publishes research on Fertility Awareness Effectiveness Rates, Menstrual Cycle Hormone Markers, and Fertility Awareness Method Comparisons.
Subjects
78 works
Cycle Physiology · Cycle Variability
Variations in ovulation time and menstrual cycle characteristics: analysis of a prospective long-term cohort study
Malliou-Becher MN et al., 2026
Ovarian Hormones · Estrogen
Hormone Changes in Polycystic Ovarian Syndrome Identified with a Personal Quantitative Urine Monitor: A Pilot Study
Bouchard TP et al., 2025
Effectiveness · Typical and Perfect Use
The State of the Science of Natural Family Planning: A Report from NFP Scientists' Meeting Held in Orlando, FL, September 4, 2024
Manhart MD et al., 2025
Measurement and Statistics · Instrument Development and Validation
Validating At-Home Urinary Hormone Measurements in Postpartum and Perimenopause Fertility Transitions
Bouchard TP et al., 2025
Cycle Physiology · Cycle Variability
Evidence that the woman's ovarian cycle is driven by an internal circamonthly timing system
Ecochard R et al., 2024
Effectiveness · Comparative Effectiveness
A Comparison of Two Hormonal Fertility Monitoring Systems for Ovulation Detection: A Pilot Study
Mu Q et al., 2023
Ovarian Hormones · Estrogen
Case Reports from Women Using a Quantitative Hormone Monitor to Track the Perimenopause Transition
Meyers M et al., 2023
Menstrual cycle: influence of circalunar and circaseptan rhythms
Ecochard R et al., 2023 Conference presentation
Return of Fertility · Postpartum Charting
Effectiveness of a Postpartum Breastfeeding Protocol for Avoiding Pregnancy
Schneider MM et al., 2023
Ovulation Physiology · Anovulation
Menstrual Cycle Parameters Are Not Significantly Different After COVID-19 Vaccination
Bouchard TP et al., 2022
Effectiveness · Typical and Perfect Use
Multisite Effectiveness Study of the Marquette Method of Natural Family Planning Program
Mu Q et al., 2022
Comparative Studies · Contraception Versus Fertility Awareness
Natural Family Planning and Marital Chastity: The Effects of Periodic Abstinence on Marital Relationships
Fehring RJ et al., 2021
Effectiveness · Comparative Effectiveness
Quantitative versus qualitative estrogen and luteinizing hormone testing for personal fertility monitoring
Bouchard TP et al., 2021
Biomarkers · Urinary Hormone Monitoring
Pilot Evaluation of a New Urine Progesterone Test to Confirm Ovulation in Women Using a Fertility Monitor
Bouchard TP et al., 2019
Young Women's Knowledge About Fertility and Their Fertility Health Risk Factors
Mu Q et al., 2019
Effectiveness · Comparative Effectiveness
Achieving Pregnancy Using Primary Care Interventions to Identify the Fertile Window
Bouchard TP et al., 2018
Effectiveness · Fertile Window Estimation
Current Medical Research: Summer/Fall 2017
Fehring RJ et al., 2018
Effectiveness · Comparative Effectiveness
Current Medical Research: Winter/Spring 2017
Fehring RJ et al., 2018
Return of Fertility · Postpartum Charting
Dissociation between Cervical Mucus and Urinary Hormones during the Postpartum Return of Fertility in Breastfeeding Women
Bouchard T et al., 2018
Oral Contraceptives · Cancer Risk
Influence of Contraception Use on the Reproductive Health of Adolescents and Young Adults
Fehring RJ et al., 2018
Reproductive Ethics · Conscience Protections
Special issue in Commemoration of the 50th Anniversary of Humanae vitae
Raviele K et al., 2018
Effectiveness · Comparative Effectiveness
The State of the Science of Natural Family Planning Fifty Years after Humane Vitae: A Report from NFP Scientists' Meeting Held at the US Conference of Catholic Bishops, April 4, 2018
Manhart MD et al., 2018
Current medical research: Summer/Fall 2016
Fehring RJ et al., 2017
Effectiveness · Typical and Perfect Use
Effectiveness of a Natural Family Planning Service Program
Fehring RJ et al., 2017
Effectiveness · Typical and Perfect Use
Effectiveness of an Online Natural Family Planning Program for Breastfeeding Women
Fehring RJ et al., 2017
Methods · Calendar and Rhythm Methods
Couple Beads: An integrated method of natural family planning
Mulcaire-Jones G et al., 2016
Current Medical Research Winter/Spring 2015
Fehring RJ, 2016
Current Medical Research Winter/Spring 2016
Fehring RJ, 2016
Current Medical Research: Summer/Fall 2015
Fehring RJ, 2016
Summer/Fall 2014
Fehring RJ, 2015
The influence of contraception, abortion, and natural family planning on divorce rates as found in the 2006-2010 National Survey of Family Growth
Fehring RJ, 2015
Effectiveness · Typical and Perfect Use
Cohort efficacy study of natural family planning among perimenopause age women
Fehring RJ et al., 2014
Use and Experience · User Satisfaction
Comparison of Abstinence and Coital Frequency Between 2 Natural Methods of Family Planning
Fehring RJ et al., 2014
Current medical researchSummer-Fall 2013
Fehring RJ, 2014
Current Medical ResearchWinter-Spring 2013
Fehring RJ, 2014
Effectiveness · Comparative Effectiveness
Efficacy of achieving pregnancy with fertility-focused intercourse
Mu Q et al., 2014
Effectiveness · Comparative Effectiveness
Use of ovulation predictor kits as adjuncts when using fertility awareness methods (FAMs): a pilot study
Leiva R et al., 2014
Current medical research: summer-fall 2012
Fehring RJ, 2013
Effectiveness · Typical and Perfect Use
Efficacy of a new postpartum transition protocol for avoiding pregnancy
Bouchard T et al., 2013
Effectiveness · Typical and Perfect Use
Influence of motivation on the efficacy of natural family planning
Fehring RJ et al., 2013
Effectiveness · Comparative Effectiveness
Randomized comparison of two Internet-supported fertility-awareness-based methods of family planning
Fehring RJ et al., 2013
Reproductive Ethics · Conscience Protections
Spiritual Care of Couples Practicing Natural Family Planning
Fehring RJ et al., 2013
Ovulation Physiology · Anovulation
Use of urinary pregnanediol 3-glucuronide to confirm ovulation
Ecochard R et al., 2013
Current Medical Research(*) Summer-Fall 2011
Fehring RJ, 2012
Current Medical Research(*) Winter-Spring 2012
Fehring RJ, 2012
Methods · Calendar and Rhythm Methods
Descriptive Statistical Evaluation of the Standard Days Method of Family Planning
Schneider M et al., 2012
Family Planning Use and Attitudes · Method Use and Prevalence
Family Planning, Natural Family Planning, and Abortion Use among U.S. Hispanic Women: Analysis of Data from Cycle 7 of the National Survey of Family Growth
Rodriguez D et al., 2012
Cycle Physiology · Ovulation
The Influence of BMI Levels on Phases of the Menstrual Cycle and Presumed Ovulation
Lasquety MG et al., 2012
Cycle Biomarkers · Cervical Mucus
Characteristics of the menstrual cycle after discontinuation of oral contraceptives
Nassaralla CL et al., 2011
Current Medical Research(*) Summer-Fall 2010
Fehring RJ, 2011
Effectiveness · Typical and Perfect Use
Pilot evaluation of an internet-based natural family planning education and service program
Fehring RJ et al., 2011
Effectiveness · Comparative Effectiveness
Cohort comparison of two fertility awareness methods of family planning
Fehring RJ et al., 2009
Effectiveness · Typical and Perfect Use
Efficacy and Efficiency in Natural Family Planning Services
Fehring RJ, 2009
The Catholic Physician and Natural Family Planning
Fehring RJ, 2009
Effectiveness · Typical and Perfect Use
Efficacy of the Marquette Method of natural family planning
Fehring RJ et al., 2008
Cycle Biomarkers · Hormonal Markers
Variability in the hormonally estimated fertile phase of the menstrual cycle
Fehring RJ et al., 2008
Effectiveness · Typical and Perfect Use
Efficacy of cervical mucus observations plus electronic hormonal fertility monitoring as a method of natural family planning
Fehring RJ et al., 2007
The Present State of NFP Science
Fehring RJ, 2006
Cycle Physiology · Cycle Variability
Variability in the phases of the menstrual cycle
Fehring RJ et al., 2006
Effectiveness · Fertile Window Estimation
Basal body temperature assessment: is it useful to couples seeking pregnancy?
Barron ML et al., 2005
Methods · Calendar and Rhythm Methods
New low- and high-tech calendar methods of family planning
Fehring RJ, 2005
Methods · Marquette Method
Protocol for determining fertility while breastfeeding and not in cycles
Fehring RJ et al., 2005
Methods · Billings Ovulation Method
A comparison of the fertile phase as determined by the Clearplan Easy Fertility Monitor and self-assessment of cervical mucus
Fehring RJ et al., 2004
Clinician Training · Professional Training
The future of professional education in natural family planning
Fehring RJ, 2004
Family Planning Use and Attitudes · Relationships and Family Outcomes
Couples' views of the effects of natural family planning on marital dynamics
Vande Vusse L et al., 2003
Biomarkers · Cervical Mucus
Accuracy of the peak day of cervical mucus as a biological marker of fertility
Fehring RJ, 2002
Return of Fertility · Breastfeeding and Ovulation
Nurse-midwives' knowledge and promotion of lactational amenorrhea and other natural family-planning methods for child spacing
Fehring RJ et al., 2001
Effectiveness · Fertile Window Estimation
Accuracy of the Ovulon fertility monitor to predict and detect ovulation
Fehring RJ et al., 1998
Effectiveness · Comparative Effectiveness
Evaluation of the Lady Free Biotester in determining the fertile period
Fehring RJ et al., 1998
Methods · Billings Ovulation Method
A comparison of the ovulation method with the CUE ovulation predictor in determining the fertile period
Fehring RJ, 1996
Family Planning Use and Attitudes · Attitudes and Acceptability
Physician and Nurses’ Knowledge and Use of Natural Family Planning
Fehring RJ, 1995
Spiritual Well-being, Self-esteem and Intimacy Among Couples Using Natural Family Planning
Fehring RJ et al., 1994
Effectiveness · Typical and Perfect Use
Use effectiveness of the Creighton model ovulation method of natural family planning
Fehring RJ et al., 1994
Reproductive Ethics · Conscience Protections
Natural Family Planning and Catholic Hospitals: A National Survey
Fehring RJ et al., 1993
Technology · Home Hormone Tests
New technology in natural family planning
Fehring RJ, 1991
Methods · Billings Ovulation Method
Methods used to self-predict ovulation. A comparative study
Fehring RJ, 1990
Self-esteem, spiritual well-being, and intimacy: a comparison among couples using NFP and oral contraceptives
Fehring RJ et al., 1989
