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Table 1 Distribution of Demographic and Baseline Clinical Characteristics

From: Methodologic considerations in the design and analysis of nested case-control studies: association between cytokines and postoperative delirium

  Number of Subjects Age at Surgery (M ± SD) Baseline GCP (M ± SD) Gender (% Female) Surgery Type (% Orthopedic) Vascular Comorbidity (%) APOE ε4 carrier (%)
Pre-match Delirium Case 49 77.2 ± 4.9 54.2 ± 5.9 55% 86 45 18
Pre-match Control 143 76.3 ± 4.8 58.9 ± 6.6 57% 85 29 24
Post-match Delirium Case 39 77.3 ± 5.1 55.2 ± 5.6 54% 92 38 13
Post-match Control 39 76.8 ± 4.7 56.4 ± 5.2 54% 92 38 13
  1. M mean, SD standard deviation, GCP general cognitive performance, APOE Apolipoprotein E