What Are the Chances?

Understanding fertility statistics and probability interpretation

Understanding fertility statistics and probability interpretation

Fertility statistics describe different levels of reality The word “fertility” is used in both demographic and clinical settings, but the meaning changes with context. In demography, fertility usually refers to the occurrence of births in a population. For example, the CDC describes the fertility rate as the number of live births per 1,000 women aged […]

Why pregnancy probability is never 100 percent

Why pregnancy probability is never 100 percent

Pregnancy is a chain of events, not a single switch It is common to think of conception as a direct result of unprotected intercourse, but medically it is a multi-step sequence. For pregnancy to occur naturally, ovulation must release an oocyte, sperm must be present in the reproductive tract at the right time, at least […]

Chances of getting pregnant: monthly probability, normal rates, and why chances vary each cycle

Chances of getting pregnant: monthly probability, normal rates, and why chances vary each cycle

What is the monthly chance of getting pregnant? The monthly chance of getting pregnant is usually described as fecundability: the probability of conception in one . For healthy couples having regular unprotected intercourse, the NHS describes a typical monthly chance of pregnancy of about 1 in 4 to 1 in 5, meaning roughly 20% to […]