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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: Ann Thorac Surg. 2020 Oct 13;112(1):206–213. doi: 10.1016/j.athoracsur.2020.07.060

Table 5.

Stratified Cox proportional hazards model for 5-year BOS-free survival.

Hazard ratio (95% CI) P value
Nighttime 1.556 (1.098-2.205) 0.013
Recipient age (per year) 1.001 (0.980-1.023) 0.900
Male recipient 0.950 (0.534-1.689) 0.861
LAS (per unit) 1.002 (0.987–1.017) 0.812
Restrictive lung disease 0.677 (0.381-1.205) 0.185
Ischemic time (per minute) 0.998 (0.990–1.007) 0.690
Hypertension 1.014 (0.554-1.858) 0.964
Single lung transplant 1.271 (0.300-5.381) 0.745
Preoperative ECMO/MV 0.459 (0.151-1.391) 0.169
Donor age 1.001 (0.980-1.023) 0.900
Operation after 2009 0.645 (0.368-1.131) 0.126

Abbreviations: CI, confidence interval; ECMO, extracorporeal membrane oxygenation; LAS, lung allocation score; MV, mechanical ventilation.