Seasonal variation in the prevalence of pregnancy-induced hypertension in Japanese women.
Seasonal variation in the prevalence of pregnancy-induced hypertension in Japanese women.
复制标题
日本女性妊娠高血压患病率的季节性变化。
DOI:
10.1111/jog.12304
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Minakami H.
中科院分区:
文献类型:
--
作者:
Morikawa M;Yamada T;Yamada T;Cho K;Sato S;Minakami H.
AimWhether prevalence rate of pregnancy‐induced hypertension (PIH), including gestational hypertension and pre‐eclampsia, is lower for summer delivery than for winter delivery remains to be studied in Japanese women.MethodsThe prevalence rate of PIH was retrospectively determined according to month of year at delivery and at conception in 301 510 Japanese women who gave birth to singleton infants on or after gestational week 22 between 2005 and 2009.ResultsThe overall prevalence of PIH was 4.6% (13 848/301 510). The prevalence rate of PIH, ranging 3.6–4.6% for women with deliveries in July–August was consistently lowest during the 5‐year study period. The mean ± standard deviation prevalence rate of 4.2 ± 0.3% for delivery in July–August was significantly lower than those for any other month (January–February, 4.7 ± 0.4%; March–April, 4.9 ± 0.4%; May–June, 4.6 ± 0.2%; September–October, 4.6 ± 0.1%; and November–December, 4.6 ± 0.2%). The prevalence rate of PIH was highest (4.9%) for women with conception in March and April and lowest (2.9%) for those with conception in November and December.ConclusionThe prevalence rate of PIH was higher for delivery in winter and early spring and lowest for summer delivery among Japanese women.