06/04/2025
For each self-care activity, participants were classified as 'fully able' to complete the activity on their own; 'vulnerable' to disability if they used accommodations, reduced their participation in the activity, or had difficulty with tasks; or 'assistance' if they could not complete an activity without help.
A classification of 'fully able' was scored as one point; 'vulnerable' was scored as two points; and 'assistance' was scored as four, with higher scores representing higher levels of disability.
The researchers said any score of two or more showed a 'meaningful level of disability'.
The NHATS data included five frequency levels of both insomnia symptoms and sleep-medication use - never, once a week, some nights, most nights, and every night.
