Mazur D J, Hickam D H
Department of Veterans Affairs Medical Center, Portland, OR 97207.
J Gen Intern Med. 1991 May-Jun;6(3):237-40. doi: 10.1007/BF02598968.
To assess the meaning ascribed by patients to qualitative expressions of probability commonly used in medical care and to determine patient preferences for obtaining information when communicating with their physicians about medical risk numerically and/or qualitatively.
Cross-sectional survey of consecutive patients.
A university-based Department of Veterans Affairs medical center.
133 patients sequentially seen in a general medicine clinic.
Subjects were given a randomly ordered list of 12 common terms, each a qualitative expression of probability. They were asked to indicate what they understood to be the numerical meaning of each word. The patients' probability estimates were found to comprise two groups of five terms each, with high intercorrelations among the probabilities assigned to the terms in each group. Mean probabilities assigned to terms in the first group all were greater than 60%, and mean probabilities assigned to terms in the second group all were below 50%. When asked whether they wanted chance information to be provided in numerical or qualitative terms, 32% reported that they wanted it only numerically; 35.3% wanted it only qualitatively; 21.8% wanted the information either way; and 8.3% wanted the information both ways.
The numerical meanings that patients ascribe to probability terms fall into identifiable patterns. While patients vary in the actual values they assign to terms, the relative meanings of terms show consistent trends.
评估患者赋予医疗中常用概率定性表述的含义，并确定患者在与医生交流医疗风险时对以数字和/或定性方式获取信息的偏好。
对连续患者进行横断面调查。
一家大学附属退伍军人事务医疗中心。
133名在普通内科门诊依次就诊的患者。
受试者被给予一份随机排序的包含12个常用术语的列表，每个术语都是概率的定性表述。他们被要求指出他们认为每个词的数字含义是什么。发现患者的概率估计分为两组，每组五个术语，每组中各术语的概率之间具有高度相关性。第一组术语的平均概率均大于60%，第二组术语的平均概率均低于50%。当被问及他们希望以数字还是定性方式获得概率信息时，32%的人表示他们只想以数字方式获得；35.3%的人只想以定性方式获得；21.8%的人希望两种方式都可以；8.3%的人希望两种方式都要。
患者赋予概率术语的数字含义呈现出可识别的模式。虽然患者赋予各术语的实际数值有所不同，但各术语的相对含义呈现出一致的趋势。
