preferred_name: Obeys commands (>2 yrs); Appropriate response to stimulation (<=2 yrs)
preferred_name_lc: obeys commands (>2 yrs); appropriate response to stimulation (<=2 yrs)
label: Obeys commands (>2 yrs); Appropriate response to stimulation (<=2 yrs)
label_lc: obeys commands (>2 yrs); appropriate response to stimulation (<=2 yrs)