Birth Control Effectiveness
Birth Control Effectiveness - Related Videos
01:22
Birth Control Methods
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2024
Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although vasectomy...
14:43
A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
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Cited by 40 •
2018
This manuscript describes the Research Prioritization by Affected Communities (RPAC) protocol and findings from its use with women at risk for preterm birth. Using the protocol, women identified and prioritized their unanswered questions about pregnancy, birth and neonatal care aimed at influencing research priority setting by funders and researchers.
09:42
Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
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2026
This protocol presents a step-by-step instruction to create a neonatal brachial plexus injury in rats to be used as a model in brachial plexus birth injury research.
08:31
Effects of Thinking Abstractly or Concretely on Self-control
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2023
Source: Diego Reinero & Jay Van Bavel—New York University Whether it's refraining from having a second serving of ice cream, studying instead of attending a fun party, or deciding to put money away in a savings account, sacrificing short-term outcomes in favor of long-term outcomes (i.e., delaying gratification) is a central tenant of self-control. When people apply self control, they engage numerous psychological processes to help them achieve their goal. These self-regulatory processes...
05:45
Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing
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Cited by 8 •
2019
Our study focuses on the effects of leptin signaling in carotid body (CB) on the hypoxic ventilatory response (HVR). We performed 'loss of function' experiments measuring the effect of leptin on HVR after CB denervation and 'gain of function' experiments measuring HVR after overexpression of the leptin receptor in CB.
FAQs
Different contraceptive mechanisms interrupt reproduction at different stages. Suppressing ovulation reduces the chance that an egg is available, while thickening cervical mucus can hinder sperm movement. Altering the uterine environment affects conditions relevant to pregnancy, and physical barriers prevent sperm from reaching an egg. Comparing these mechanisms connects biological action with expected prevention.
Perfect-use and typical-use effectiveness answer different questions about the same method. Perfect use reflects consistent, correct use under ideal conditions, whereas typical use incorporates missed doses, incorrect use, device failure, and other real-world interruptions. The gap between these measures shows how strongly reliability can depend on human behavior as well as biological mechanism.
Duration and consistency can change contraceptive performance even when the underlying mechanism remains the same. One method may depend on repeated actions, while another may provide protection over a defined period. Evaluating whether use is continuous, correct, and maintained for the intended duration helps explain why outcomes vary between ideal and everyday conditions.
To evaluate birth control effectiveness, compare outcomes under perfect use with outcomes under typical use, then examine the conditions associated with each result. Relevant considerations include the method’s mechanism, consistency of use, correct use, device failure, and duration. This approach separates performance of the method itself from effects introduced by real-world use.
In clinical and reproductive-health contexts, effectiveness comparisons can support informed contraceptive choices without treating one measure as universally decisive. Users and researchers can consider how a method’s biological action aligns with the practical demands of consistent use. This makes effectiveness assessment relevant both to individual decision-making and to broader reproductive health research.
Biology provides the framework for interpreting pregnancy-prevention outcomes. Ovulation, sperm access, cervical mucus, and the uterine environment are biological points at which methods can act, while behavior and device performance influence whether that action is maintained in practice. Studying both dimensions helps researchers evaluate how biological processes and real-world conditions shape observed effectiveness.