BIRTH WEIGHT AND GESTATION TIME IN RELATION TO MATERNAL AGE, PARITY AND INFANT SURVIVAL
BIRTH WEIGHT AND GESTATION TIME IN RELATION TO MATERNAL AGE, PARITY AND INFANT SURVIVAL
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DOI：
10.1111/j.1469-1809.1951.tb02469.x
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发表时间：
1951-01-01
期刊：
影响因子：
--
通讯作者：
PENROSE, LS
中科院分区：
文献类型：
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作者：
KARN, MN;PENROSE, LS
对近 14,000 名男女婴儿记录的分析表明，出生体重。和妊娠天数相关（r+0.4）；那出生的重量。随着胎次的增加而增加，但随着母亲年龄的增加而略有减少；母亲年龄与胎次的相关性为0.5。存活率计算显示最有利的点是高于平均体重，接近 8 磅。就妊娠时间而言，最高存活率接近平均值。抛物线很好地拟合了给定出生体重的生存几率对数。适合男性和女性。提供了表格和图表来估计任何给定重量的存活率。和妊娠时间。
Analysis of records of nearly 14,000 male and female infants shows that birth wt. and days of gestation are correlated (r+0.4); that birth wt. increases with parity, but decreases slightly with mother''s age; that the correlation of mother''s age and parity is 0.5. A calculation of survival rates showed the most favorable point to be above mean weight, at nearly 8 lb. For gestation time the highest survival rate was close to the mean value. Parabolas give a good fit to the logarithm of odds on survival for given birth wt. for males and females. Tables and diagrams are provided for estimating the survival rate for any given wt. and gestation time.