Falls, Cognitive Impairment, and Gait Performance: Results From the GOOD Initiative.

This was a cross-sectional analysis, so it can show association between cognitive status, gait, and falls, but it cannot show that any factor caused falls or that treatment would reduce falls. Falls were collected retrospectively by self-report, and the paper states that this is not the best approach for fall assessment; recall bias could affect reporting, especially in participants with cognitive impairment. Fall recording periods differed across centers: most centers used the previous 12 months, while Luxembourg used the previous 6 months. Alzheimer and non-Alzheimer dementia were classified by DSM-IV criteria and clinical assessment, not autopsy confirmation. The analysis included major covariates but could not include all risk factors because the cohorts were heterogeneous. Participants had to be able to walk without personal assistance, so findings may not apply to older adults who already need assistance to walk. Of 2717 initially recruited participants, 221 were excluded for missing gait, clinical, or cognitive data, leaving 2496 for analysis.

The authors declared no conflicts of interest.

Do not conclude that slower walking speed or variable stride time caused falls. This was a cross-sectional study with retrospective self-reported falls, so it shows association only. Do not assume all dementia subtypes carry the same fall risk; after adjustment, non-Alzheimer dementia was associated with higher fall odds, while Alzheimer dementia and mild cognitive impairment were not associated with higher fall odds than cognitively healthy adults.