Fukuda M, Fukuda K, Shimizu T, Møller H
Fukuda Ladies Clinic, Ako, Hyogo, Japan.
Hum Reprod. 1998 Aug;13(8):2321-2. doi: 10.1093/humrep/13.8.2321.
We investigated the possible association between the Kobe earthquake (January 1995) and the sex ratio among live-born infants after the catastrophe. A significant decline in the sex ratio (0.501) of Hyogo Prefecture in October 1995 was observed 9 months after the Kobe earthquake as compared with an expected value of 0.516 in the period from January 1993 to January 1996 (P = 0.04; one-tailed). Simultaneously, a reduction in fertility of approximately 6% was also observed, compared with the month of October 2 years previously. Thus, the acute stress resulting from a great natural catastrophe can be a cause of a low sex ratio at birth 9 months later.
我们调查了1995年1月神户地震与灾后活产婴儿性别比之间可能存在的关联。与1993年1月至1996年1月期间预期的0.516相比，神户地震9个月后的1995年10月，兵库县的性别比显著下降（0.501）（P = 0.04；单尾）。同时，与两年前的10月份相比，生育率也下降了约6%。因此，重大自然灾害造成的急性应激可能是9个月后出生性别比偏低的一个原因。
