TY  - JOUR
AU  - Achangwa, Chiara
AU  - Han, Changhee
AU  - Lim, Jun-Sik
AU  - Cho, Seonghui
AU  - Choi, Sangbum
AU  - Ryu, Sukhyun
PY  - 2025
DA  - 2025/2/12
TI  - Net Reproduction Number as a Real-Time Metric of Population Reproducibility
JO  - JMIR Public Health Surveill
SP  - e63603
VL  - 11
KW  - fertility rate
KW  - reproducibility
KW  - reproduction rate
KW  - population control
KW  - Korea
KW  - sex ratio
KW  - imbalance
KW  - mortality
KW  - woman
KW  - female
KW  - childbearing age
KW  - reproductive age
KW  - giving birth
KW  - assessment
KW  - time series
KW  - Korean
KW  - impact analysis
KW  - birth control
KW  - reproduction
AB  - Abstract: The total fertility rate (TFR) is a biased estimate of the population reproductive potential when there is a sex-ratio imbalance at birth, and it does not account for the mortality of women of childbearing age. This study aimed to estimate the reproduction rate (Rt), which adjusts for the sex-ratio imbalance and the mortality of women of childbearing age, and to assess the differences in the timing of when the population reached the replacement level of the TFR and Rt. We first estimated the Rt using the probability of survival in women and the number of female births. Then, using a time-series analysis, we compared the time series of the TFR and Rt in the Korean population between 1975 and 2022. We found the Rt showed a below replacement level of the population a year earlier than the TFR. However, the estimate of the time-series analysis of Rt was not significantly different from the estimates of the TFR. Our finding suggests that the Rt can provide timely information on the adjusted population reproductive potential and is easier for the public to interpret compared to TFR. 
SN  - 2369-2960
UR  - https://publichealth.jmir.org/2025/1/e63603
UR  - https://doi.org/10.2196/63603
DO  - 10.2196/63603
ID  - info:doi/10.2196/63603
ER  -