Table 1.

Qualitative phenotypes of 68 IPF cases who completed the LCQ questionnaire and were genotyped for MUC5B rs35705950

Qualitative variable	% subjects; IPF (N = 68)
Male	61.76% (42/68)
GERD (yes/no)	71.64% (48/67)
Definite UACS	32.81% (21/64)
Definite or possible UACS together	42.19% (27/64)
Ever smoked	35.82% (24/67)
Sleep apnea	32.84% (22/67)
ACE inhibitor	14.93% (10/67)
rs35705950 genotype frequencies	TT: 4.41% (3/68)
	GT: 63.24% (43/68)
	GG: 32.35% (22/68)
rs35705950 T allele frequency	37.03% (25/68)

IPF – Idiopathic Pulmonary Fibrosis.

GERD – gastroesophogeal reflux disease.

UACS – Upper Airway Cough Syndrome.