gross reproduction rate (2024)

FAQs

How do you calculate gross reproduction rate? ›

The standard method of computing the gross reproduction rate is to sum the age-specific fertility rates for female live births. If the rates used are for other than single years of age, for example, if they are for 5-year age groups, they must be multiplied by 5. The sum of these rates is the gross reproduction rate.

Assuming no net migration and unchanged mortality, a total fertility rate of 2.1 children per woman ensures a broadly stable population. Together with mortality and migration, fertility is an element of population growth, reflecting both the causes and effects of economic and social developments.

A number above 2.1 is associated with a growing population, and anything lower than 2.1 indicates population decline. Figure 2 plots the calculated Total Fertility Rate (TFR) from 2006 through 2019.

The gross reproduction rate (GRR) is the average number of daughters a woman would have if she survived all of her childbearing years, which is roughly to the age of 45, subject to the age-specific fertility rate and sex ratio at birth throughout that period.

The formula for gross rate of return is: Gross rate of return = ( Final value − initial value ) Initial value \text{Gross rate of return} = \frac{(\text{Final value} - \text{initial value})}{\text{Initial value}} Gross rate of return=Initial value (Final value−initial value)

The truth about natural fertility and age: while women under 30 have about 25% chance of getting pregnant naturally each cycle, that chance drops to 20% for women over 30, according to estimates by the American Society for Reproductive Medicine. By 40, the chance of getting pregnant naturally each month is just 5%.

The term "lowest-low fertility" is defined as TFR at or below 1.3.

The problem with low fertility is that it reduces population size not at all ages but only among the young. Low fertility produces an age structure that creates a momentum for future population decline, a situation that must be stopped at some point if the population is to be demographically sustainable.

NDC value in Gauge R&R Study:

→ It is similar to looking at how many possible values there are on a Range Control Chart. → The calculation is: NDC = 1.41(PV/GRR) = 1.41(0.872/0.319) = 3.8. → The integer value of NDC should be greater than or equal to 5. → In this case, it is 3.

What is meant by gross reproduction rate? ›

gross reproduction rate. GRR. Definition English: The average number of daughters that would be born alive to a woman (or group of women) during her lifetime if she passed through her childbearing years conforming to the age-specific fertility rates of a given year.

GRR is also commonly referred to as Gross Renewal Rate. Net Revenue Retention (NRR) Rate, also known as Net Dollar Retention (NDR), is the percentage of recurring revenue retained from existing customers in a defined time period, including expansion revenue, downgrades, and cancels.

Net revenue retention (NRR) and gross revenue retention (GRR) are two important metrics. NRR reflects your ability to retain and expand the monthly spend of customers, while GRR indicates only your ability to retain customers.

The vital statistics of a population are statistics such as the number of births, deaths, or marriages which take place in it. Someone's vital statistics, especially a woman's, are the measurements of their body at certain points, for example at their chest, waist, and hips.

A net reproductive rate of 1.0 indicates that a population is neither increasing nor decreasing but replacing its numbers exactly. This rate indicates population stability. Any number below 1.0 indicates a decrease in population, while any number above indicates an increase.

To get the gross pay at an hourly rate, multiply the number of hours worked during the pay period by the hourly pay rate. Specifically: Get the timesheet or attendance log of the employee to know the number of hours worked during the pay period. Multiply the total number of hours worked by the hourly pay rate.

For hourly employees, gross wages can be calculated by multiplying the number of hours worked by the employee's hourly wage. For example, an employee that works part-time at 25 hours per week and receives a wage of $12 per hour would have a gross weekly pay of $300 (25x12=300).

If your menstrual cycle lasts 28 days and your period arrives like clockwork, it's likely that you'll ovulate on day 14. That's halfway through your cycle. Your fertile window begins on day 10. You're more likely to get pregnant if you have sex at least every other day between days 10 and 14 of a 28-day cycle.

You're most fertile at the time of ovulation (when an egg is released from your ovaries), which usually occurs 12 to 14 days before your next period starts. This is the time of the month when you're most likely to get pregnant. It's unlikely that you'll get pregnant just after your period, although it can happen.

A woman's peak reproductive years are between the late teens and late 20s. By age 30, fertility (the ability to get pregnant) starts to decline. This decline becomes more rapid once you reach your mid-30s. By 45, fertility has declined so much that getting pregnant naturally is unlikely for most women.

What is the average woman's fertility rate? ›

The data shows that very low fertility rates are becoming increasingly normal across the globe. Current declines are probably not just cyclical, but likely reflect a “new normal” with most countries having birth rates between 1.4 and 1.9 children per woman.

A woman in her early to mid-20s has a 25–30% chance of getting pregnant every month. Fertility generally starts to reduce when a woman is in her early 30s, and more so after the age of 35. By age 40, the chance of getting pregnant in any monthly cycle is around 5%.

The main symptom of infertility is not getting pregnant. There may be no other obvious symptoms. Sometimes, women with infertility may have irregular or absent menstrual periods. In some cases, men with infertility may have some signs of hormonal problems, such as changes in hair growth or sexual function.

Why is Total Fertility Rate Important? Knowing the TFR, along with mortality and migration projections, helps us estimate how a population might grow, shrink, or stabilize over time. Data on the total fertility rate can also help predict other demographic shifts, such as future age distributions within a population.

For the last 70 years, fertility rates have decreased worldwide, with a total 50% decline. Reasons include women's empowerment in education and the workforce, lower child mortality and the increased cost of raising children.

Step 1: Calculate the Grand Mean (the mean of all measurement values) Step 2: For each measurement calculate the mean for all measurements with the same Part ID, the same Operator ID and the same Part and Operator ID's. Step 3: For each measurement calculate the squared difference between means.

Quality Glossary Definition: Gage repeatability and reproducibility (GR&R) Gage repeatability and reproducibility (GR&R) is defined as the process used to evaluate a gauging instrument's accuracy by ensuring its measurements are repeatable and reproducible.

To assess the repeatability and reproducibility, use a gage R&R study (Stat > Quality Tools > Gage Study). Repeatability is the variation due to the measurement device. It is the variation that is observed when the same operator measures the same part many times, using the same gage, under the same conditions.

If the net reproduction rate calculated per one woman is less than one, the daughter's generation is smaller than the mother's generation and the mother's generation has not reproduced itself.

What is the difference between GFR and TFR? ›

The general fertility rate is an age/sex-specific birth rate while the total fertility rate is an age/sex-adjusted birth rate. The TFR is an age-adjusted rate because it is based on the assumption that there are the same number of women in each age group.

What Is a Global Recovery Rate (GRR)? The global recovery rate (GRR) refers to the amount that a business recovers from fraud-related losses. It may also be used to describe the chances of collecting from loan facilities that may be recoverable given a borrower's potential for default.

GRR is always equal to or lower than NRR (since it eliminates the extra income sources) and will never exceed 100%. It is considered a truer measure to track how well existing customer income is retained on an annual or monthly basis.

NRR is greater than GRR.

GRR can never exceed 100% because even if you maintained renewals of all accounts without any churn or downgrades, you'd still have the same MRR at the end of the month that you had at the beginning. GRR can only go down from 100%, not up.

The single most important factor in population growth is the total fertility rate (TFR). If, on average, women give birth to 2.1 children and these children survive to the age of 15, any given woman will have replaced herself and her partner upon death. A TFR of 2.1 is known as the replacement rate.

The Total Fertility Rate (TFR) which is measured as the average number of children per woman, has come down from 2.2 to 2.0 at the national level between NFHS-4 and 5. There are only five states in India, which are above the replacement level of fertility of 2.1.

You might think the number should be 2.0 - two parents have two children, so the population stays the same size. But even with the best healthcare, not all children survive to adulthood. Also, babies are ever so slightly more likely to be male. It means the replacement figure is 2.1 in developed countries.

Most couples are able to get pregnant within six months to a year. If you're unable to conceive after a full year of trying, it's a good idea to consult a fertility specialist. Sometimes there's an obvious cause of infertility, like a physical problem with the ovaries, uterus, or testicl*s.

Even so, high fertility, defined as five or more births per woman over the reproductive career, characterizes 33 countries.

What is a good fertilization rate for IVF? ›

On average most patients will have 70-85% of their mature eggs fertilize. Immature eggs cannot be injected (ICSI) and will not fertilize in standard IVF. If the eggs are poorer quality and/or the sperm used is very poor, the fertilization may be lower than for the average patient.