preferred_name: Can walk on their own without using a walking aid, but has difficulty walking long distances or on uneven surfaces.
preferred_name_lc: can walk on their own without using a walking aid, but has difficulty walking long distances or on uneven surfaces.
label: Can walk on their own without using a walking aid, but has difficulty walking long distances or on uneven surfaces.
label_lc: can walk on their own without using a walking aid, but has difficulty walking long distances or on uneven surfaces.