Pickering R M, Forbes J F
Br J Obstet Gynaecol. 1985 Nov;92(11):1106-12. doi: 10.1111/j.1471-0528.1985.tb03020.x.
We examined hospital discharge records in 1980-81 for singleton third trimester deliveries in Scotland. We compared 3000 women who had previously experienced induced termination of pregnancy, and 4000 who had experienced spontaneous abortion with primigravidae and with women in their second pregnancy, their first having resulted in a livebirth. Two aspects of low birthweight were examined: delivery before the 37th completed week of gestation, and low birthweight for gestational age. Our comparisons were further controlled for maternal height, age, sex of infant, marital status and social class. Women with previous spontaneous abortions experienced significantly increased risk of preterm delivery but not of low birthweight for gestational age. Women with a history of induced abortion also experienced increased risk of preterm delivery, but for women aged 18-24 years, risk of low birthweight for gestational age was significantly reduced compared with primigravidae.
我们查阅了1980 - 1981年苏格兰单胎妊娠晚期分娩的医院出院记录。我们将3000名曾接受人工流产的女性、4000名曾自然流产的女性与初产妇以及首次分娩为活产的经产妇进行了比较。研究了低出生体重的两个方面：妊娠满37周前分娩以及根据孕周计算的低出生体重。我们的比较进一步控制了产妇身高、年龄、婴儿性别、婚姻状况和社会阶层。既往有自然流产史的女性早产风险显著增加，但根据孕周计算的低出生体重风险未增加。有人工流产史的女性早产风险也增加，但对于18 - 24岁的女性，与初产妇相比，根据孕周计算的低出生体重风险显著降低。
