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Table 1 Study cohorts’ characteristics at baseline

From: Time to revisit the problem of CIN? The low incidence of acute kidney injury with and without contrast in hospitalized patients: an observational cohort study

  Period 1 Period 2
  Non-Contrast Contrast p-value Non-Contrast Contrast p-value
  CT scan type (n = 109) CT scan type (n = 121)   CT scan type (n = 165) CT scan type (n = 205)  
Age 70 [59, 81] 68 [54, 77] 0.34 74 [60, 84] 65 [51, 76] <0.001
Male 57 (52 %) 64 (53 %) 0.93 97 (59 %) 121 (59 %) 0.96
BL eGFR 66 [43, 94] 72 [58, 104] 0.11 64 [37, 87] 74 [58, 96] <0.001
BL eGFR > 60 mL/min 62 (57 %) 85 (70 %) 0.04 89 (54 %) 147 (73 %) <0.001
  1. Median [IQR] for continuous variables, frequency (%) for categorical variables