Lain Samantha J, Ford Jane B, Raynes-Greenow Camille H, Hadfield Ruth M, Simpson Judy M, Morris Jonathan M, Roberts Christine L
Perinatal Research, Kolling Institute of Medical Research, University of Sydney, Sydney, NSW, Australia.
Med J Aust. 2009 Mar 2;190(5):238-41. doi: 10.5694/j.1326-5377.2009.tb02382.x.
To assess the change in birth rates, both overall and in age, parity, socioeconomic and geographical subgroups of the population, after the introduction of the Baby Bonus payment in Australia on 1 July 2004.
Population-based study using New South Wales birth records and Australian Bureau of Statistics population estimates for the period 1 January 1997 - 31 December 2006.
All 853 606 women aged 15-44 years with a pregnancy resulting in a birth at > or = 20 weeks' gestation or a baby > or = 400 g birthweight.
Change in birth rate in 2005 and 2006 compared with the trend in birth rates before the introduction of the Baby Bonus.
The crude annual birth rate showed a downward trend from 1997 to 2004; after 2004 this trend reversed with a sharp increase in 2005 and a further increase in 2006. All age-specific birth rates increased after 2004, with the greatest increase in birth rate, relative to the trend before the Baby Bonus, being seen in teenagers. Rates of first births were not significantly affected by the bonus; however, rates of third or subsequent births increased across all age, socioeconomic and geographical subgroups.
In the first 2 years after the introduction of the Baby Bonus, birth rates increased, especially among women having a third or subsequent birth. This could represent an increase in family size and/or a change in the timing of births.
评估2004年7月1日澳大利亚实施育儿补贴后，总体以及按年龄、胎次、社会经济状况和地理区域分组的人口出生率变化。
基于人群的研究，使用新南威尔士州的出生记录以及澳大利亚统计局1997年1月1日至2006年12月31日期间的人口估计数。
所有853606名年龄在15 - 44岁之间、怀孕并分娩出孕周≥20周或出生体重≥400克婴儿的妇女。
2005年和2006年的出生率变化与育儿补贴实施前的出生率趋势相比较。
粗年出生率在1997年至2004年呈下降趋势；2004年后这一趋势逆转，2005年急剧上升，2006年进一步上升。2004年后所有年龄别出生率均上升，相对于育儿补贴实施前的趋势，青少年的出生率上升幅度最大。头胎出生率受补贴影响不显著；然而，三胎及以上胎次的出生率在所有年龄、社会经济和地理区域分组中均有所上升。
育儿补贴实施后的头两年，出生率上升，尤其是在生育三胎及以上的妇女中。这可能意味着家庭规模的增加和/或生育时间的变化。
