Weisman C S, Plichta S B, Tirado D E, Dana K H
School of Hygiene and Public Health, Department of Health Policy and Management, Johns Hopkins University.
Fam Plann Perspect. 1993 Sep-Oct;25(5):224-6.
All 133 women who began using the Norplant contraceptive implant between August and December of 1991 at a Planned Parenthood clinic in Baltimore were compared with a sample of 112 women who obtained prescriptions for the pill at the same clinic during the same time period. A multivariate analysis found that women of Medicaid are significantly more likely than those who are self-paying to select the implant rather than the pill. Similarly, compared with women who have had no children, those who have had two or more are also significantly more likely to choose the implant. However, adolescents and women who have had an abortion are no more likely than other women to select the implant.
1991年8月至12月期间，在巴尔的摩一家计划生育诊所开始使用诺普兰避孕植入剂的133名女性与同期在同一家诊所获得口服避孕药处方的112名女性样本进行了比较。多变量分析发现，医疗补助计划的女性比自费女性更有可能选择植入剂而非口服避孕药。同样，与没有孩子的女性相比，有两个或更多孩子的女性也更有可能选择植入剂。然而，青少年和有过堕胎经历的女性选择植入剂的可能性并不比其他女性更高。
