Parity progression ratios

A parity progression ratios (PPR) is a measure commonly used in demography to study fertility. The PPR is simply the proportion of women with a certain number of children who go onto have another child. Calculating the PPR, also known as $a_x$ , can be achieved by using the following formula:

单词	Parity Progression Ratio
释义	Parity Progression Ratio 英语百科 Parity progression ratios A parity progression ratios (PPR) is a measure commonly used in demography to study fertility. The PPR is simply the proportion of women with a certain number of children who go onto have another child. Calculating the PPR, also known as $a_x$ , can be achieved by using the following formula:
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Parity Progression Ratio

Parity progression ratios