Table 3.

Multivariable Cox proportional hazards model of risk factors for bronchiolitis obliterans syndrome.

Variable	HR	95% CI	p value
Clearance of antibodies to self-antigens*	0.24	0.08 – 0.70	0.009
Primary graft dysfunction at T0			0.49
PGD grade 1	0.38	0.09 – 1.66	0.20
PGD grade 2	0.60	0.16 – 2.26	0.45
PGD grade 3	0.81	0.21 – 3.11	0.76
Acute rejection grade ≥ A2	1.25	0.89 – 2.71	0.12
Lymphocytic bronchiolitis grade ≥ B2	0.49	0.15 – 1.59	0.36
Community-acquired respiratory virus	2.37	0.76 – 7.88	0.16

^*Clearance of antibodies to self-antigens was evaluated as a time-dependent variable.