Efficacy of methods for determining ovulation in a natural family planning program

Guida, Maurizio; Tommaselli, Giovanni A.; Palomba, Stefano; Pellicano, Massimiliano; Moccia, G.; Carlo, Costantino Di; Nappi, Carmine

doi:10.1016/s0015-0282(99)00365-9

Cited by 108 publications

(77 citation statements)

References 13 publications

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“…pills, Depo-Provera) in the past month and, on the basis of a nationally marketed ovulation detector (Ovusign), all were judged to have experienced a lutenizing hormone (LH) surge (preceding ovulation by 24-48 h in most instances) between 5 days after and 1 day before participating in one questionnaire session (see below). Two recent studies found that ovulation detection kits that, like ours, use a urinary stick to detect an LH surge, yielded 97-100% concordance with actual ovulation detected by ultrasonography, much higher than tests using cervical mucus, basal body temperature, or salivary ferning (Guida et al 1999;Guermandi et al 2001). Of a larger sample recruited for the study (n = 118), 28 showed no evidence of surging within 5 days, 12 showed no evidence of surging but did not report for testing on one or more of the 5 days, 22 failed to complete the multisession study (e.g.…”

Section: (A) Participantsmentioning

confidence: 48%

Changes in women's sexual interests and their partner's mate–retention tactics across the menstrual cycle: evidence for shifting conflicts of interest

Gangestad

Thornhill

Garver

2002

Proc. R. Soc. Lond. B

335

224

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Because ancestral women could have obtained genetic benefits through extra-pair sex only near ovulation, but paid costs of extra-pair sex throughout the cycle, one might expect selection to have shaped female interest in partners, other than primary partners, to be greater near ovulation than during the luteal phase. Because men would have paid heavier costs if their partners had extra-pair sex near ovulation, one might also expect selection to have shaped males' efforts to track their primary partners' whereabouts to be increased near ovulation, relative to the luteal phase. Women filled out questionnaires about their sexual interests and their partners' mate-retention tactics twice: once within 5 days before a lutenizing hormone surge and once during the luteal phase. Results showed that: (i) women reported greater sexual interest in, and fantasy about, non-primary partners near ovulation than during the luteal phase; (ii) women did not report significantly greater sexual interest in, and fantasy about, primary partners near ovulation; (iii) women reported that their primary partners were both more attentive and more proprietary near ovulation.

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Section: (A) Participantsmentioning

confidence: 48%

Changes in women's sexual interests and their partner's mate–retention tactics across the menstrual cycle: evidence for shifting conflicts of interest

Gangestad

Thornhill

Garver

2002

Proc. R. Soc. Lond. B

335

224

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“…An algorithm based on the ratio of these steroid hormones provides a robust measure of the timing of ovulation. This ratio measure has been validated against the urinary peak of luteinizing hormone (LH) [4], which is one of the most accurate markers of ovulation [5]. Using the steroid ratio measure, we estimated day of ovulation in 696 cycles from 213 women.…”

Section: Methodsmentioning

confidence: 99%

Likelihood of conception with a single act of intercourse: providing benchmark rates for assessment of post-coital contraceptives

Wilcox¹,

Dunson²,

Weinberg³

et al. 2001

Contraception

298

258

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Emergency post-coital contraceptives effectively reduce the risk of pregnancy, but their degree of efficacy remains uncertain. Measurement of efficacy depends on the pregnancy rate without treatment, which cannot be measured directly. We provide indirect estimates of such pregnancy rates, using data from a prospective study of 221 women who were attempting to conceive. We previously estimated the probability of pregnancy with an act of intercourse relative to ovulation. In this article, we extend these data to estimate the probability of pregnancy relative to intercourse on a given cycle day (counting from onset of previous menses). In assessing the efficacy of post-coital contraceptives, other approaches have not incorporated accurate information on the variability of ovulation. We find that the possibility of late ovulation produces a persistent risk of pregnancy even into the sixth week of the cycle. Post-coital contraceptives may be indicated even when intercourse has occurred late in the cycle.

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“…A more recent study evaluated urinary LH, salivary ferning, beta-glucuronidase, the shift of BBT, and the peak in cervical mucus with the estimated day of ovulation with 40 women enrolled in a natural family planning (NFP) program [8]. The estimated day of ovulation was the ultrasonic diagnosis of ovulation (i.e., follicular collapse).…”

Section: Published Research On the Accuracy Of Self-detected Pdmentioning

confidence: 99%

Accuracy of the peak day of cervical mucus as a biological marker of fertility

Fehring

2002

Contraception

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Efficacy of methods for determining ovulation in a natural family planning program

Cited by 108 publications

References 13 publications

Changes in women's sexual interests and their partner's mate–retention tactics across the menstrual cycle: evidence for shifting conflicts of interest

Changes in women's sexual interests and their partner's mate–retention tactics across the menstrual cycle: evidence for shifting conflicts of interest

Likelihood of conception with a single act of intercourse: providing benchmark rates for assessment of post-coital contraceptives

Accuracy of the peak day of cervical mucus as a biological marker of fertility

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