preferred_name: Sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness
preferred_name_lc: sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness
label: Sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness
label_lc: sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness