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PubMed2000

The importance of user compliance on the effectiveness of natural family planning programs.

Nowadays, there is an increasing interest in natural family planning methods. The biological basis for the application of natural family planning methods is the recognition of ovulation and, more extensively, of the fertile period. Several studies in the past decade have shown the efficacy of these methods and that the main cause of failure was either a conscious departure from the rules of the method or erroneous application of the method. Another problem affecting natural family planning that has been highlighted is the relatively high discontinuation rate. These features are probably due to low compliance in applying the natural family planning rules, which may be too demanding for a number of couples. In this review, there are comments on the application of natural family planning methods, the discontinuation rates and the failure of the method due to mistakes in the studies carried out in the past 15 years. Steps that can be taken to limit mistakes and discontinuity are also addressed.

Family Planning Services↗
PubMed1980

Comparative evaluation of two methods of natural family planning in Columbia.

Results of a comparative study of the ovulation method (OM) and symptothermal method (STM) of natural family planning in Colombia are presented. Recruitment of volunteer couples began in August, 1976, and continued through December, 1978, during which time 566 couples were randomly assigned to one or the other of the two methods. The study included 3 to 5 months of training in the method assigned, after which the couples entered the follow-up phase of the study. They remained in follow-up until (1) they dropped out or (2) the study closed in June, 1979. Total dropout rates were high for both methods of natural family planning. One year after entry into the follow-up phase of the study, net pregnancy rates were 24.2% for OM users and 19.8% for STM users. Gross pregnancy rates were 29.2% for OM and 26.1% for STM. Differences in pregnancy rates between the two methods were not statistically significant.

Adolescent↗
PubMed2005

[Natural family planning].

In this review characteristics and efficiency of the natural family planning methods were discussed. Significance of the natural family planning methods in everyday health care practice was presented. Good impact on the relationship of couples and lack of side effects was underlined.

Contraception Behavior↗
PubMed1987

A prospective multicenter trial of the ovulation method of natural family planning. V. Psychosexual aspects. World Health Organization.

During the 13-cycle effectiveness phase of a five-center study of the ovulation method of natural family planning, there were substantial differences, particularly between the two developed and the three developing countries, in the stated degree of satisfaction with the frequency of intercourse (most couples were satisfied in Bangalore, Manila, and San Miguel, whereas one-third of the subjects and half of their partners would have preferred more frequent intercourse in Auckland and Dublin) and in expressed difficulties associated with abstinence (e.g., 62% had occasional difficulty in Auckland, 14% in Bangalore, 55% in Dublin, 28% in Manila, and 5% in San Miguel). Cumulative net probabilities of discontinuation due to pregnancy were 1.8%, 18.6%, and 54.7% for couples in whom the male partner's degree of satisfaction was described as "no difficulty," "occasional difficulty," and "always some difficulty," respectively.

Adult↗
PubMed1991

Efficacy of the symptothermal method of natural family planning in lactating women after the return of menses.

This study was designed to determine the efficacy of the symptothermal method of natural family planning during lactation. Although the method appears to give a reasonable reflection of fertility potential over time, it overlaps with the profound influence of lactation in both ovulation suppression and the delay of luteal phase adequacy. Further analysis is planned to attempt to identify those particular mucus signs and symptoms that are helpful during the transition from lactational amenorrhea to normal cycling.

Body Temperature↗
PubMed1999

A fixed formula to define the fertile window of the menstrual cycle as the basis of a simple method of natural family planning.

A significant number of women worldwide use periodic abstinence as their method of family planning. Many of them use some type of calendar-based approach to determine when they should abstain from unprotected intercourse to avoid pregnancy; yet they often lack correct knowledge of when during their menstrual cycle they are most likely to become pregnant. A simple method of natural family planning (NFP) based on a fixed formula to define the fertile window could be useful to these women. This article reports the results of an analysis of the application of a fixed formula to define the fertile window. A large existing data set from a World Health Organization study of the Ovulation Method was used to estimate the theoretical probability of pregnancy using this formula. Information about the variable probability of pregnancy on different cycle days relative to ovulation also was considered in the analysis. Results suggest that a fixed formula in which days 8-19 of the menstrual cycle are considered to be the fertile window would provide the appropriate basis of a simple, effective, family planning method.

Family Planning Services↗
PubMed1990

[Socio-demographic characteristics of participants in natural family planning introductory courses. Final report of a pilot study].

Participants in courses of natural family planning methods were questioned regarding sociodemographic characteristics, previously and last used family planning methods and their motivation for course attendance. The method used most often previously was the 'pill' (47.6%), natural family planning came next with 35.8%. Among the methods used last, natural family planning dominated with 38%, followed by the pill (27.1%). The main motives given by both men and women for attending the course were 'quest for an alternative method' (36.1%), 'considerations about health' (31.4%).

Adult↗
PubMed1994

Use effectiveness of the Creighton model ovulation method of natural family planning.

OBJECTIVE: To determine the use effectiveness of the Creighton model ovulation method in avoiding and achieving pregnancy. DESIGN: Prospective, descriptive. SETTING: A natural family planning clinic at a university nursing center. PARTICIPANTS: Records and charts from 242 couples who were taught the Creighton model. The sample represented 1,793 months of use of the model. MAIN OUTCOME MEASURE: Creighton model demographic forms and logbook. RESULTS: 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%. CONCLUSION: 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.

Adult↗
PubMed1981

A prospective multicentre trial of the ovulation method of natural family planning. II. The effectiveness phase.

A five-country prospective study was undertaken to determine the effectiveness of the ovulation method of natural family planning. After successful completion of a teaching phase of three cycles, 725 subjects entered a 13-cycle effectiveness phase and contributed 7514 cycles of observation. The overall cumulative net probability of discontinuation for the effectiveness study after 13 cycles was 35.6%, 19.6% due to pregnancy. Pregnancy rates per 100 woman-years calculated using the modified Pearl index were as follows: conscious departure from the rules of the method, 15.4; inaccurate application of instructions, 3.5; method failure, 2.8; inadequate teaching, 0.4; and uncertain, 0.5.

Adult↗
PubMed1984

A prospective multicentre study of the ovulation method of natural family planning. IV. The outcome of pregnancy. World Health Organization.

In a prospective, five-country study of the ovulation method of natural family planning, 175 pregnancies occurred, with known outcome in 163. There were 140 live births (86% of known outcome); 2 congenital malformations (1.2%), including 1 stillbirth; 16 spontaneous abortions (9.8%); and 6 induced abortions (3.7%). The rates of congenital malformations, stillbirths, and spontaneous abortions do not differ from outcomes in the community or outcomes associated with other fertility-regulating methods. Among the live births, there were 81 males and 59 females, a male proportion of 0.58. There were no significant differences in sex ratio from varying intervals between the likely act leading to conception and the estimated day of ovulation.

Abortion, Spontaneous↗
PubMed1986

Correlation of vaginal hormonal cytograms with cervical mucus symptoms as observed by women using the ovulation method of natural family planning.

The first study was done in which vaginal hormonal cytograms were correlated with cervical mucus symptoms as charted by women using the ovulation method of natural family planning. Daily vaginal smears obtained by 67 women during 78 menstrual cycles provided the basis of the study. The women had used the ovulation method for at least three cycles and were not breast-feeding. All vaginal smears examined cytologically had a microbiologic diagnosis of lactobacilli. All the vaginal hormonal cytograms revealed ovulatory-type patterns. Karyopyknotic index (KPI) peak correlated with peak mucus day +/-2 days in 74, or 94.9%, of the cases, with a mean of peak mucus at +0.14 days. The average number of mucus days prior to the KPI peak was 6.1. Seven women also provided daily blood specimens for bioassay of luteinizing hormone (LH). KPI peaked with a mean of 0.7 days after the LH peak.

Adolescent↗
PubMed1991

Effectiveness and acceptibility of the symptothermal method of natural family planning in Germany.

Throughout Germany, 851 women who were instructed in natural family planning participated in a prospective study. Of these, 255 women with 3174 cycles used only natural family planning for family planning and 274 women with 3995 cycles occasionally used barrier methods in the fertile phase. For natural family planning--only users, the Pearl rate for unplanned pregnancy was 2.3 and for mixed-method users 2.1. Most pregnancies resulted from unprotected intercourse during the fertile phase, and the use of barrier methods does not reduce risk-taking.

Body Temperature↗