Letters Section Editor: Stephen J. Lurie,
MD, PhD, Senior Editor.
In Reply: We thank Dr Allaire for drawing our
attention to the inconsistency in our description of her study. Nevertheless,
we used the accurate information, as described in Table 2, to assign ratings.
We evaluated 10 distinct features of each study and assigned a summary rating
of "poor" if 2 or more features were found to be lacking. Even discounting
field work changes as minor or biased in a favorable direction, as suggested
by Allaire, the study's selective samples and use of only 2 observation points
mean that it is limited for the purpose of assessing general trends.
Freedman VA, Martin LG, Schoeni RF. Measuring Functional Status and Disability in Older Adults—Reply. JAMA. 2003;289(24):3239-3240. doi:10.1001/jama.289.24.3239-a