Waiting time and mortality rate on lung transplant candidates in Japan: a single-center retrospective cohort study

Table 4 Risk factors for waitlist mortality in patients with IPF

	Univariate Cox model			Multivariate Cox model
	HR	95% CI	p value	HR	95% CI	p value
IPF (vs. non-IPF ILD)	1.72	1.02–2.92	0.043	1.98	1.11–3.55	0.022
Age (every 1-year increase)	1.04	1.01–1.06	0.008	1.07	1.04–1.10	< .001
Sex (male vs. female)	4.17	2.36–7.37	< .001	2.60	1.29–5.21	0.007
BMI (every 1 kg/m² increase)	1.00	0.95–1.05	0.856	0.91	0.84–0.98	0.016
Predicted FVC (every 1% increase)	0.97	0.96–0.99	< .001	0.97	0.95–0.99	0.009

BMI body mass index, CI confidence interval, FVC forced vital capacity, HR hazard ratio, ILD Interstitial lung disease, IPF idiopathic pulmonary fibrosis