Recalled Weight - Measured Weight - Japanese
Men
Weight Loss Study Aim
To examine the influences of recall period, current body weight, weight
gain and loss, and weight variability on the accuracy of long-term recall
of past weight.
Weight Loss Study Method and Subjects
Comparison of recalled weights around 25 y old with weights measured at
age 25y in health checkup records among 2453 Japanese men (age: 34-61
y).
Weight Loss Study Results
Recalled weight strongly correlated with measured weight. Correlation
coefficients decreased as age or the elapsed time since age 25 years increased.
Recalled weight was slightly greater than measured weight at age 25 years.
Subjects with a current body mass index (BMI) of less than 28.6 kg/m2
overestimated their past weights, whereas those with BM1 of 28.6 kg/m2
or over underestimated it. Subjects with weight loss since age 25 years
underestimated their past weights, whereas those with stable weight or
gain overestimated it. There were monotonic increases in the three indexes
of deviation across the CV quartile categories. Concerning the effect
RMSE, a similar trend was observed.
Weight Loss Study Conclusion
These results indicate that past body weights over a long period seem
to be recalled with good accuracy. However, it should be kept in mind
when using recalled weight in an epidemiologic study that accuracy of
recall is influenced by age or elapsed time, current BMI, weight gain
and loss, and weight variability.
Source: International Journal of Obesity
(2003)
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