To the Editor Dr Liu-Ambrose and colleagues described a randomized trial of an exercise program to prevent falls in elderly persons in British Columbia.1 Some results were similar to those of a trial in Washington State in 2007.2 In both studies, exercise had little influence on tests of physical performance. Comparing the exercise group with controls, the risk ratio for any fall in the Canadian study was 1.01 (105 adults in the exercise group with a fall divided by 104 adults in the usual care group with a fall). The risk ratio for any fall was 0.96 in the Washington study. These results suggest little benefit from exercise...
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", language="en", issn="0098-7484", doi="10.1001/jama.2019.12184", url="http://dx.doi.org/10.1001/jama.2019.12184" }