NORPLANT ADOPTION AND DISCONTINUATION IN THE U.S.

在本研究中，我们将：（1）文件意识，知识， 全国有代表性的妇女样本对NORPLANT的看法 和美国的男性，并检查子组差异和相关性， 亚组之间的变化;（2）模型的形成NORPLANT使用 妇女的意图，并审查态度和 意图使用理性行动理论;（3）检查的变化 女性使用NORPLANT的意向和男性对NORPLANT的态度 （4）估计其配偶/伴侣的发病率和患病率; NORPLANT采用;使用 社会人口模型，并检查亚组差异;（5）测试 行为模型来研究决策过程， 采用NORPLANT，并考察意向-行为关系;（6） 分析NORPLANT采用作为避孕转换过程， 没有方法，或从另一种方法，并检查使用NORPLANT的 推迟与终止生育的目的;（7）检查 四年内的知识、观念、意图和使用; 和（8）使用多变量估计继续和中止率 (with协变量）风险模型。 前三个目标将通过两个国家的现有数据来实现。 我们在1991年进行的全国调查。 虽然其他目标可以 这些数据也将随着完成，其价值将大大提高 如果我们使用纵向数据来完成这些。 因此，我们建议 对女性基线样本进行两次后续访谈，一次在 1992年，另一个在1993年。 所有其他数据收集要么已经， 或将在现有补助金下执行。 本研究以Fishbein和Ajzen的理性行为理论为指导， 以及社会人口模型。 该分析包括 描述性分析的形式，频率分布和多方式 交叉制表;使用逻辑回归进行多变量分析，以及 多分类logit回归和多变量风险建模。 在 在每个项目年度结束时，将通过报告传播成果， 工作文件、在专业会议上的发言;以及 专著将综合从所有阶段的结果，建议 research.

In the proposed research we will: (1) Document awareness, knowledge, and perceptions of NORPLANT among nationally representative samples of women and men in the U.S., and examine subgroup differences and correlates of variation among subgroups; (2) Model the formation of NORPLANT use intentions among women, and examine the relationship between attitudes and intention using the Theory of Reasoned Action; (3) Examine the variation in the women's intention to use NORPLANT, and men's attitudes toward NORPLANT use by their spouse/partner; (4) Estimate the incidence and prevalence of NORPLANT adoption; model the predictors/determinants of adoption using a social-demographic model, and examine subgroup differences; (5) Test behavioral models to investigate the decision making process leading to NORPLANT adoption, and examine the intention-behavior relationship; (6) Analyze NORPLANT adoption as a contraceptive switching process either from no method, or from another method, and to examine use of NORPLANT for the purpose of delaying vs terminating childbearing; (7) Examine change in knowledge, perceptions, intentions, and use over a period of four years; and (8) Estimate continuation and discontinuation rates using multivariate (with covariates) hazards models. The first three aims will be accomplished with extant data from the two national surveys we have conducted in 1991. While the remaining aims can also be accomplished with these data, their value will be greatly enhanced if we used longitudinal data to accomplish these. Hence we propose to conduct two follow-up interviews with the female baseline sample, one in 1992, and the other in 1993. All other data collection either have been, or will be, performed under existing grants. The research is guided by Fishbein and Ajzen's Theory of Reasoned Action, as well as by a Social-Demographic Model. The analysis includes descriptive analyses in the form of frequency distributions and multi-way cross-tabulations; multivariate analyses using logistic regression, and polytomous logit regression, and multivariate hazards modelling. At the end of each project year, the results will be disseminated through reports, working papers, presentations at professional meetings; and a final monograph will synthesize the results from all phases of the proposed research.