However , HNC reduced mortality risk in both depressed and non-depressed patients [ adjusted hazard ratios ( HRs ) 0.12 , 95 % confidence interval ( CI ) 0.03-0 .56 , P = 0.006 , and 0.49 , 95 % CI 0.25-0 .93 , P = 0.03 , respectively ] , but not in PHQ-deniers ( HR 1.74 , 95 % CI 0.77-3 .96 , P = 0.19 ; P = 0.006 for homogeneity of HRs ) .