Vertaile menetelmiä

	Child-Woman Ratio	Net Reproduction Rate
Tieteenala	Väestötiede	Väestötiede
Menetelmäperhe	Process / pipeline	Process / pipeline
Syntyvuosi	1900	2001
Kehittäjä	Established demographic indicator (census-based)	Richard Böckh and Robert Kuczynski (formalized in Preston, Heuveline & Guillot)
Tyyppi	Indirect fertility index from a single census age-sex distribution	Period measure of generational replacement combining fertility and mortality
Alkuperäislähde	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512
Rinnakkaisnimet	CWR, Child-to-woman ratio, Census fertility ratio, Çocuk-Kadın Oranı	NRR, Net reproduction ratio, Net reproductive rate, Net Üreme Hızı
Liittyvät	4	4
Tiivistelmä	The child-woman ratio is the number of young children, usually those under five, per woman of reproductive age in a population. Computed from a single census age-sex distribution, it is the simplest indirect indicator of fertility, designed for settings where birth registration is absent or unreliable. Because young children are the surviving product of recent births, their number relative to potential mothers serves as a rough proxy for the level of childbearing over the preceding few years.	The net reproduction rate (NRR) is the demographic measure of generational replacement: the average number of daughters a woman would bear who survive to the age their mother was when she bore them, given the period's age-specific fertility rates and female mortality. By combining fertility with survival, the NRR answers the fundamental question of whether a population is replacing itself — an NRR of one means each generation of women exactly reproduces the next, below one signals long-run decline, and above one signals growth.