Table 3.

Univariable and multivariable Cox analysis for disease severity

	HR	95% CI	p	HR	95% CI	p
	Univariable analysis			Multivariable analysisa
FVC < 80%	3.21	2.17–4.75	<0.001	3.15	2.11–4.71	<0.001
DLco < 55%	6.28	3.28–12.03	<0.001	5.55	2.88–10.70	<0.001
CPI > 40	7.28	3.90–13.57	<0.001	6.60	3.52–12.39	<0.001
GAP stage 1	7.09	4.27–11.76	<0.001	7.44	4.18–13.25	<0.001

^aMultivariable model includes age, gender, BMI and smoking status and includes 412 of 416 available for univariable model