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Table 5 Results of the sub-distribution Hazard ratio (sHR) of baseline lymphocyte count and its evolution at day 3 for the risk of 28-day ICU mortality (adjusted with the covariates used in the propensity score of dying before day 28 using an IPTW estimator; see Additional file 2)

From: Persistent lymphopenia is a risk factor for ICU-acquired infections and for death in ICU patients with sustained hypotension at admission

Variables sHR IC-95 p value
Baseline lymphocyte count categorized in 4 classes     0.15
 Normal value ≥1.5 × 103 cells/µL Reference  
 Subnormal class (<1.5 and ≥ 1 × 103 cells/µL) 0.84 0.658 1.08 0.176
 Low class (<1 × 103 cells/µL and ≥0.5 × 103 cells/µL) 1.09 0.891 1.36 0.377
 Very low class (<0.5 × 103 cells/µL) 0.99 0.773 1.28 0.969
 Non-significant increase (below 0.2 × 103 cells/µL) at day 3 and abnormal value 1.67 1.37 2.03 <0.0001