an increasing trendP = 0.055
There seemed to be an increasing trend from the lowest tertile to the highest tertile in the risk of death at both 28-days ( HR = 1.783, P = 0.055, 95% CI = 0.987–3.219) and 90-days ( HR = 1.710, P = 0.035, 95% CI = 1.039–2.813) after correcting for the covariates of Model 2.