García-Peña C, Pérez-Zepeda M U
Mario Ulises Pérez Zepeda Geriatric Epidemiology Research Department at the Instituto Nacional de Geriatría, Periférico Sur 2767, colonia San Jerónimo Lídice, delegación La Magdalena Contreras, ciudad de México, Distrito Federal, México. Phone number: +52 55 55739087,
J Nutr Health Aging. 2017;21(3):262-265. doi: 10.1007/s12603-016-0761-7.
The main objective was to test the validity of height estimated by knee height in Mexican older adults, as a surrogate for standing height.
Cohort study.
Data were drawn from the first and third waves of the Mexican Health and Aging Study.
Included participants were community-dwelling 50-year or older adults with measured height at baseline and in follow-up. Subjects with a lower limb fracture in the follow-up were excluded.
Main measurements were baseline standing height and 11-year follow-up and knee-estimated height in follow-up. Population specific equations were used to estimate standing height from knee height. Comparisons between baseline standing height and knee-derived height were done with simple correlations, limits of agreement (Bland-Altman plot) and Deming regressions.
A total of 136 50-year or older adults were followed-up for eleven years, with a mean age of 60. There was a positive correlation between knee-estimated height and baseline standing height of 0.895 (p<0.001) for men and of 0.845 (p<0.001) for women. Limits of agreement for men were from -6.95cm to 7.09cm and for women from -6.58cm to 8.44cm.
According to our results, knee-estimated height could be used interchangeably with standing height in Mexican older adults, and these results might apply also to other populations.
主要目的是测试墨西哥老年人中通过膝高估算身高作为站立身高替代指标的有效性。
队列研究。
数据取自墨西哥健康与老龄化研究的第一波和第三波。
纳入的参与者为居住在社区的50岁及以上成年人，在基线和随访时测量了身高。排除随访期间发生下肢骨折的受试者。
主要测量指标为基线站立身高、11年随访时的身高以及随访时通过膝高估算的身高。使用特定人群的方程从膝高估算站立身高。通过简单相关性、一致性界限（Bland-Altman图）和Deming回归对基线站立身高和膝高推导的身高进行比较。
共有136名50岁及以上成年人接受了为期11年的随访，平均年龄为60岁。男性膝高估算身高与基线站立身高的正相关系数为0.895（p<0.001），女性为0.845（p<0.001）。男性的一致性界限为-6.95厘米至7.09厘米，女性为-6.58厘米至8.44厘米。
根据我们的结果，在墨西哥老年人中，膝高估算身高可与站立身高互换使用，这些结果可能也适用于其他人群。
