preferred_name: Can walk on their own without using walking aids, and can go up or down stairs without needing to hold the handrail.
preferred_name_lc: can walk on their own without using walking aids, and can go up or down stairs without needing to hold the handrail.
label: Can walk on their own without using walking aids, and can go up or down stairs without needing to hold the handrail.
label_lc: can walk on their own without using walking aids, and can go up or down stairs without needing to hold the handrail.