In context, I would be careful taking this conclusion at face value quite yet, though it does seem intuitive, just as the other one was. “About 250 healthy old

In context, I would be careful taking this conclusion at face value quite yet, though it does seem intuitive, just as the other one was. “About 250 healthy older adults came from a long-term study of heart health … 739 people were newly recruited. . . . Participants recruited from the heart-health study had more risk factors for developing dementia, including being older and having faster rates of cognitive decline than those from the general community. In the main analysis of all study participants, the researchers saw no difference in the rate of change in cognitive functioning between people who received the hearing aids and those who didn’t. However, when the analysis focused on people from the heart-health study, who had a higher risk of dementia, the benefit of the hearing aids was substantial. Those who received hearing aids had an almost 50% reduction in the rate of cognitive decline.”