Cross-sectional Average Fertility (CAF): Properties and Comparison with Other Measures

서지정보

· 발행기관 : 한국인구학회
· 수록지 정보 : 한국인구학 / 38권 / 3호 / 113 ~ 139페이지
· 저자명 : 계봉오

초록

The current study examines the properties of cross-sectional average fertility (CAF). The CAF is a recently suggested summary fertility measure (Kye, 2012) and summarizes the current and past fertility experiences of currently reproductive women and relates to their mean family size. I examine the properties of CAF and compare it with other summary fertility measures using the Human Fertility Database (HFD) and simulated data. Because CAF is a cross-sectional average measure such as cross-sectional average length of life (CAL) and singulate mean age at marriage (SMAM), I also discuss the shared properties of these measures. Comparison of CAF with other measures shows the following. First, CAF is the most robust to period tempo changes, and it consequently shows the smoothest trends among the measures considered. In particular, this is the case during the period of monotonic fertility decline. Second, the trends of CAF closely resemble those of lagged completed cohort fertility. This suggests that CAF can be interpreted as lagged completed cohort fertility. Because the CAF is available in most recent period whereas lagged completed cohort fertility is not, the correspondence should be useful to examine fertility trend. In sum, CAF is useful for the following reasons. First, it accounts for tempo effects when fertility timing as well as level changes. Second, the correspondence of CAF and lagged completed cohort fertility suggests that CAF can work for demographic translation in fertility research.

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