Tracking dyspnea up to supplemental oxygen prescription among patients with pulmonary fibrosis

BMC Pulmonary Medicine

Table 3 Predictors of being prescribed O₂ ^a

	Hazard Ratio (95% confidence limits)	p
Female	0.53 (0.28, 1.00)	0.05
Age, yrs	1.00 (0.97, 1.03)	0.99
Ever-smoker	1.62 (0.87, 3.04)	0.13
Reside in Colorado	0.24 (0.10, 0.61)	0.003
IPF	3.57 (1.93, 6.61)	< 0.0001
FVC%^b	0.95 (0.93, 0.98)	0.0003
DLCO%^b	0.96 (0.93, 0.99)	0.003
UCSD at enrollment	1.03 (1.01, 1.04)	< 0.0001

^aFor all 43 subjects prescribed O2, regardless of whether they completed UCSD prior to O2 prescription
^bwithin 4 months of enrollment; IPF = idiopathic pulmonary fibrosis; FVC% = percent predicted forced vital capacity; UCSD = University of California San Diego Shortness of Breath Questionnaire

ISSN: 1471-2466