經(jīng)產(chǎn),多胎產(chǎn)

The multiparity mosquito ratio was 50.74%. 經(jīng)產(chǎn)蚊比率為50.

Results The determinats of LBEI included factors,such as pretern birth,abnormal maternal health status,maternal medical conditions during pregnancy,multiparity and intrauterine growth retardation. 結(jié)果低出生體重兒發(fā)生的危險(xiǎn)因素主要為孕周不足、孕期異常、母親疾病史、多胎、宮內(nèi)發(fā)育不良等。孕周及出生時(shí)體重與死亡呈負(fù)相關(guān)。