Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina 27710, USA.
J Gerontol A Biol Sci Med Sci. 2010 Oct;65(10):1123-9. doi: 10.1093/gerona/glq096. Epub 2010 Jun 7.
To ascertain accuracy of self-reported height, weight (and hence body mass index) in African American and white women and men older than 70 years of age.
The sample consisted of cognitively intact participants at the third in-person wave (1992-1993) of the Duke Established Populations for Epidemiologic Studies of the Elderly (age 71 and older, N = 1761; residents of five adjacent counties, one urban, four rural). During in-person, in-home interviews using trained interviewers, height and weight were self-reported (and measured later in the same visit using a standardized protocol), and information were obtained on race, sex, and age.
Accuracy of self-reported height and weight was high (intraclass correlation coefficient 0.85 and 0.97, respectively) but differed as a function of race and age. On average, all groups overestimated their height; whereas (non-Hispanic) white men and women underestimated their weight, African Americans overestimated their weight. Overestimation of height and weight was more marked in persons 85 years and older. Specificity for overweight (body mass index [kg/m(2)] ≥ 25) and obesity (body mass index ≥ 30) ranged from 0.90 to 0.99 for African Americans and whites, but sensitivity was better for African Americans (overweight: 0.81, obesity: 0.89), than for whites (0.66 and 0.57, respectively).
Height and weight self-reported by African Americans and whites over the age of 70 can be used in epidemiological studies, with greater caution needed for self-reports of whites, and of persons 85 years of age or older.
为了确定 70 岁以上的非裔美国人和白种人男性和女性自我报告的身高、体重（进而体重指数）的准确性。
该样本由认知功能完整的参与者组成，他们参加了杜克老年人流行病学研究的既定人群的第三次现场调查（1992-1993 年；年龄在 71 岁及以上，N=1761；居住在五个相邻的县，一个城市，四个农村）。在使用经过培训的访谈员进行的现场家庭访谈中，身高和体重是自我报告的（并在同一次访问中稍后使用标准化协议进行测量），并获得了有关种族、性别和年龄的信息。
自我报告的身高和体重的准确性很高（内类相关系数分别为 0.85 和 0.97），但因种族和年龄而异。平均而言，所有组都高估了他们的身高；而（非西班牙裔）白种男性和女性低估了他们的体重，非裔美国人则高估了他们的体重。身高和体重的高估在 85 岁及以上的人群中更为明显。超重（体重指数[kg/m2]≥25）和肥胖（体重指数≥30）的特异性在非裔美国人和白人中分别为 0.90 至 0.99，但非裔美国人的敏感性更好（超重：0.81，肥胖：0.89），而白人的敏感性较差（超重：0.66，肥胖：0.57）。
70 岁以上的非裔美国人和白种人自我报告的身高和体重可用于流行病学研究，但对白人以及 85 岁及以上的人的自我报告需要更加谨慎。
