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Table 2 Demographic data of subjects included and not included in this study

From: Post-infection cognitive impairments in a cohort of elderly patients with COVID-19

  Patients included (n = 1539) Patients not included (n = 1694) P value
Age – Median (IQR), year 69 (66, 75) 70 (66, 75) 0.165a
Male – No. (%) 738 (47.95) 826 (48.76) 0.647b
Education – Median (IQR), year 12 (9–12) 12 (9–12) 0.226a
BMI – Median (IQR) 23.97 (22.52, 25.38) 23.92 (22.42, 25.41) 0.284a
Severe cases -No. (%) 238 (15.46) 257 (15.17) 0.845b
Coexisting disorders – No. (%)
 Hypertension 589 (38.27) 640 (37.78) 0.800b
 Diabetes mellitus 304 (19.75) 348 (20.54) 0.599b
 Hyperlipidaemia 155 (10.07) 176 (10.39) 0.772b
 Stroke history 87 (5.65) 91 (5.37) 0.758b
 Coronary heart disease history 212 (13.78) 231 (13.64) 0.919b
 COPD 150 (9.75) 163 (9.62) 0.905b
ICU admission – No. (%) 81 (5.26) 94 (5.55) 0.756b
Mechanical Ventilation, No. (%) 96 (6.24) 106 (6.26) 1.000b
High flow oxygen therapy, No. (%) 326 (21.18) 355 (20.96) 0.897b
Delirium, No. (%) 105 (6.82) 117 (6.91) 0.945b
  1. Abbreviation: IQR Inter-Quartile Range, BMI Body Mass Index, ICU intensive care unit, COPD Chronic Obstructive Pulmonary Disease
  2. aMann-Whitney U test
  3. bPearson χ2 test