Hilgers, T. W. (2004). Chapter 13: Achieving- and Avoiding-Related Behavior (Use). The Medical and Surgical Practice of NaProTECHNOLOGY, 173-175.
Hilgers TW. Chapter 13: Achieving- and Avoiding-Related Behavior (Use). The Medical and Surgical Practice of NaProTECHNOLOGY. 2004:173-175.
Hilgers, T. W. "Chapter 13: Achieving- and Avoiding-Related Behavior (Use)." The Medical and Surgical Practice of NaProTECHNOLOGY, 2004, pp. 173-175.
For EndNote, Zotero or Mendeley:
License
No open license is recorded for this paper. Reuse terms are set by the publisher.
Author affiliations
1 institution
Pope Paul VI Institute for the Study of Human Reproduction, Omaha, Nebraska.027jqx654
Linked to ROR, the Research Organization Registry
RRM Academy Synopsis
Using fertile days is achieving-related behavior in Creighton Model
Actions that step away from the instructions to avoid pregnancy can be classed as achieving-related behavior in the Creighton Model System, says a 2004 textbook chapter. The chapter gives expert opinion and one small survey of 50 pregnancies.
Key Findings
The chapter identifies avoiding-related behavior in couples with a serious desire to avoid pregnancy, such as premenopausal couples with complete families, who follow the observations, charting and instructions fully.
The chapter gives examples of achieving-related behavior: dropping observations, using beginning-of-day intercourse in the pre-Peak phase, or using the third day post-Peak assuming pregnancy is unlikely.
Couples who feel ambivalent about their intentions are classed as achieving-related, because a mutual decision to avoid pregnancy is part of avoiding-related behavior.
The chapter calls "taking a chance" contraceptive in substance, because the couple takes the chance of not becoming pregnant. It places that use of days within achieving-related behavior.
The chapter reports a preliminary survey of 50 consecutive pregnancies in couples of normal fertility using the CrMS, which it says needs further study.
RRM Context
Cycle charting lets a couple observe the fertile window and act on their own intention. This chapter shows how the Creighton Model tradition within NaProTechnology turns that idea into teaching categories. Research on charting-based methods in RRM continues to ask how well couples apply their instructions.
Our editorial summary of this paper, not the article's abstract.
Abstract
Chapter 13 of Hilgers' NaProTECHNOLOGY textbook establishes a clinical behavioral taxonomy unique to the Creighton Model FertilityCare System, distinguishing between achieving-related and avoiding-related use based on whether a couple's actions increase or decrease the probability of conception. The chapter argues that a "taking a chance" mindset is inherently contraceptive in psychology and must be replaced with intentional, education-grounded behavior that reflects a couple's genuine family planning goals.
Hilgers TW, 2020·Linacre Q·Free full text on PubMed Central
This study reports on 632 cycles from 105 women who were using the CREIGHTON MODEL FertilityCare™ System to avoid pregnancy and had either a serious reason to avoid pregnancy or some degree of a lack of confidence. A progesterone level was drawn on the third day after the Peak Day as they were charting, and if the progesterone level was 2.3 ng/mL or greater, then ovulation was determined to have passed. If the level was greater than 3.0 ng/mL, this indicated that an absolute period of infertility had begun. In these cases, no pregnancies were observed. In the 27 cycles in which a specific follow-up relative to pregnancy could not be definitively determined, the progesterone levels in all cases were 2.3 ng/mL or greater with 23 of the 27 cycles being 3.1 ng/mL or greater. It is highly unlikely that any of those became pregnant as well. These cycles were collected over thirteen years (2004-2016). Two case presentations are also a part of this article of two families in which the couples had very serious reasons to avoid pregnancy. In these two couples, each of the women was multi-gravid and had no evidence of subfertility or infertility. They used the family planning progesterone level (the Peak Day +3 progesterone level) for a total of 167 cycles over a number of years successfully without a subsequent pregnancy.
This article presents a thirteen-year effort to evaluate the serum progesterone level on the third day after the Peak Day as observed by women charting the CREIGHTON MODEL FertilityCare™ System. It is known that the Peak Day is associated with ovulation, and if the progesterone reaches a certain level, then an absolute period of infertility should follow. In fact, this is what this study reflects.
Chang CP et al., 2020·Paediatr Perinat Epidemiol·Free full text on PubMed Central
Previous research has demonstrated that women instructed in fertility awareness methods can identify the Peak Day of cervical mucus discharge for each menstrual cycle, and the Peak Day has high agreement with other indicators of the day of ovulation. However, previous studies enrolled experienced users of fertility awareness methods or were not fully blinded. To assess the agreement between cervical mucus Peak Day identified by fertile women without prior experience on assessing cervical mucus discharge with the estimated day of ovulation (1 day after urine luteinising hormone surge). This study is a secondary analysis of data from a randomised trial of the Creighton Model FertilityCare(TM) System (CrM), conducted 2003-2006, for women trying to conceive. Women who had no prior experience tracking cervical mucus recorded vulvar observations daily using a standardised assessment of mucus characteristics for up to seven menstrual cycles. Four approaches were used to identify the Peak Day. The referent day was defined as one day after the first identified day of luteinising hormone (LH) surge in the urine, assessed blindly. The percentage of agreement between the Peak Day and the referent day of ovulation was calculated. Fifty-seven women with 187 complete cycles were included. A Peak Day was identified in 117 (63%) cycles by women, 185 (99%) cycles by experts, and 187 (100%) by computer algorithm. The woman-picked Peak Day was the same as the referent day in 25% of 117 cycles, within ±1 day in 58% of cycles, ±2 days in 84%, ±3 days in 87%, and ±4 days in 92%. The ±1 day and ± 4 days' agreement was 50% and 90% for the expert-picked and 47% and 87% for the computer-picked Peak Day, respectively. Women's daily tracking of cervical mucus is a low-cost alternative for identifying the estimated day of ovulation.
Daly KD et al., 2019·Linacre Q·Free full text on PubMed Central
A special course on Marriage, the Family and Human Sexuality was established at Kenrick-Glennon Seminary in St. Louis so as to assist the seminarians in their better understanding of the Church's teaching relative to natural methods of family planning and women's health care. This article compares the response at the beginning of this three-credit semester course to the same seven-item questionnaire given at the conclusion of the course. The preand postcourse scores were calculated for each of the questions. The scores obtained after the course were all significantly higher than they were before the course with p values ranging from 0.01 to <0.0001. Four of the items showed marked improvement including an understanding of the church's teaching related to natural methods, current methods of natural family planning, the impact of a natural method on a couple's marriage, and also the impact of a natural method on family life. Statistically significant improvement was also seen in their understanding of the topic of natural family planning and the Creighton Model System and its relevance toward the seminarian's vocation, the use of the methods to either achieve or avoid pregnancy, and how contraception and abortion are linked. In these last three items, the level of statistical significance was quite high, although not as high as the other four items. There were 104 seminarians over an eight-year period of time, who provided answers to these questions, both before and after the course. This course was modeled after a course that was initiated at the Pope Paul VI Institute for the Study of Human Reproduction, which was for priests, seminarians, and Catholic leaders, titled Love & Life Unlimited. NONTECHNICAL This is an evaluation of a ten-point, seven-question questionnaire that was utilized at the beginning of a course at Kenrick Seminary in Marriage, Sexuality, Creighton Model and NaProTECHNOLOGY. The same questionnaire was given to the students at the beginning of the course and then two to three months later at the conclusion of the three-credit course. The results show that there is a significant improvement in the seminarians' knowledge and general attitude about natural methods of family planning and suggests that such courses would be beneficial to establish in seminaries throughout the country.
Progesterone support in pregnancy has been in use for over 60 years, having received its start in the 1940s. Its initial use was in patients who had habitual spontaneous abortion caused by luteal phase deficiency. More recently, the administration of progesterone later in pregnancy has been considered to be justified because of an observed decrease in circulating progesterone with the onset of labor, an association of premature labor with decreased progesterone concentrations, and the observation that progesterone has a tocolytic effect. A considerable boost to the use of progestational agents to reduce preterm delivery was received with the publication of two papers which showed a significant reduction in preterm delivery rates with the prophylactic administration of either progesterone or 17-a hydroxyprogesterone caproate. Recently it has been shown, however, that its use is not universal. This may be related to the significant late sequelae that were documented following the in utero exposure of the fetus to the potent steroid diethylstilbestrol (DES) and that this bad experience cast “a long shadow,” In spite of this, the use of progesterone, at least in early pregnancy, is widespread in the various artificial reproductive programs and is growing in its use as an agent to reduce prematurity. Over the years, there has been an extraordinary amount of confusion related to the use of progesterone support in pregnancy. The Food & Drug Administration (FDA) created some of this confusion. In various labeling of progesterone products by the FDA, one of the contraindications to the use of oral progesterone is listed as “known or suspected pregnancy.” And, yet, no such contraindication is identified for the use of progesterone gel. In fact, progesterone gel is indicated for progesterone supplementation or replacement as a part of an assisted reproductive technology (ART) treatment program for infertile women with a progesterone deficiency. To make this even more confusing, oral progesterone, while it was contraindicated in “known or suspected pregnancy,” its official labeling stated that it “should be used during pregnancy only if indicated (see contraindications).” Also, up until very recently, there was a dire “warning” contained in the labeling for USP progesterone injection in sesame seed oil regarding an increased possibility of birth defects. An analysis of the fetal safety of isomolecular progesterone (Pregn-4-ene-3,20-dione) administration during the course of 1,310 pregnancies over a 35-year period of time (1979-2014) was undertaken to address this confusion.
Stanford JB et al., 2025·PLoS One·Free full text on PubMed Central
Knowledge of the fertile and infertile phases of the menstrual cycle can be applied to conceive or to avoid pregnancy. Fertility intentions and sexual behaviors during the fertile time may influence whether and when pregnancy occurs. The Creighton Model FertilityCare System (CrMS) is a specific system of fertility appreciation used to conceive or to avoid pregnancy. The objective of this paper is to report intentions, behaviors, and pregnancy rates during use of the CrMS among couples who initially intended to avoid pregnancy.Data and methods We analyzed a prospective cohort study conducted in 17 CrMS centers across the USA and Canada, following 296 couples for up to one year after onset of initial use of the CrMS to avoid pregnancy. Baseline data included demographics, motivations, and pregnancy intentions for each partner. Couples contributed 2894 menstrual cycles, most of which had data collected (by questionnaires and daily diary) on cycle-specific pregnancy intentions, days of potential fertility, and fertility behaviors. Pregnancies were prospectively actively ascertained. We found a high concordance (91%) in cycle pregnancy intentions between partners. However, 44% of cycles with strong intentions to avoid pregnancy included intercourse on potentially fertile days or days of undetermined fertility status. Across all sensitivity scenarios, cumulative 13-cycle pregnancy rates with cycle intention to conceive ranged from 88.0% to 89.8%, and cumulative 13-cycle pregnancy rates with cycle intention to avoid ranged from 29.1% to 35.3%. In multivariate analysis, baseline motivations and intentions for pregnancy within 2 years were strongly correlated with the likelihood of pregnancy, more so than cycle intentions. The findings suggest that in some populations using natural family planning, baseline motivations and intentions may be more strongly related to pregnancy rates than cycle intentions. Our findings also highlight essential elements for evaluating correct use, including complete recording of intercourse and its timing.
To evaluate the use effectiveness of Creighton Model (CrM) NaProEducation Technology for avoiding pregnancy. CrM is a medical model of natural procreation education that is a fully standardized modification of the Billings ovulation method. This system has been used as a means to avoid pregnancy and has been prospectively evaluated in five use effectiveness studies. A prospective life-table analysis of the five studies (meta-analysis) was undertaken, yielding both net and gross rates. Discontinuation rates were also calculated. These studies were conducted at CrM centers in Omaha, St. Louis, Wichita, Houston, and Milwaukee. A total of 1,876 couples used CrM NET for a total of 17,130.0 couple months of use. The method and use effectiveness rates for avoiding pregnancy were 99.5 and 96.8 at the 12th ordinal month and 99.5 and 96.4 at the 18th ordinal month, respectively. The discontinuation rate was 11.3% at the 12th ordinal month and 12.1% at the 18th ordinal month. CrM is highly effective as a means of avoiding pregnancy in both its method and use effectiveness. The method effectiveness has remained stable over the years of the studies, but the use effectiveness for avoiding pregnancy appears to have improved over the study period.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY
Pregnancy achievement rates among couples using the CrMS to target fertile days are analyzed by cycle type, reproductive history, and duration of use, demonstrating the system's capacity to accommodate irregular and abnormal cycles without reducing its fertility-targeting utility. These data are foundational to NaProTECHNOLOGY's application in infertility management, establishing that the CrMS identifies fertile windows even in subfertile populations with disrupted cycle parameters.
Fehring RJ et al., 1994·J Obstet Gynecol Neonatal Nurs·Free to read
To determine the use effectiveness of the Creighton model ovulation method in avoiding and achieving pregnancy. Prospective, descriptive. A natural family planning clinic at a university nursing center. Records and charts from 242 couples who were taught the Creighton model. The sample represented 1,793 months of use of the model. Creighton model demographic forms and logbook. At 12 months of use, the Creighton model was 98.8% method effective and 98.0% use effective in avoiding pregnancy. It was 24.4% use effective in achieving pregnancy. The continuation rate for the sample at 12 months of use was 78.0%. The Creighton model is an effective method of family planning when used to avoid or achieve pregnancy. However, its effectiveness depends on its being taught by qualified teachers. The effectiveness rate of the Creighton model is based on the assumption that if couples knowingly use the female partner's days of fertility for genital intercourse, they are using the method to achieve pregnancy.
Mental Health and Psychosocial Care › Psychosocial Support › Counseling and Therapy · Restorative Reproductive Medicine › NaProTechnology › Protocols and Framework
Thomas W Hilgers
Tom Hilgers, T Hilgers
Hilgers et al. 2004, Hilgers 2004
Cite this article
Hilgers, T. W. (2004). Chapter 13: Achieving- and Avoiding-Related Behavior (Use). The Medical and Surgical Practice of NaProTECHNOLOGY, 173-175.
Hilgers TW. Chapter 13: Achieving- and Avoiding-Related Behavior (Use). The Medical and Surgical Practice of NaProTECHNOLOGY. 2004:173-175.
Hilgers, T. W. "Chapter 13: Achieving- and Avoiding-Related Behavior (Use)." The Medical and Surgical Practice of NaProTECHNOLOGY, 2004, pp. 173-175.
027jqx654