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Table 1 Characteristics of patients with COVID-19 in the 1st/2nd and the 3rd waves

From: Treatment and outcome of COVID-19 patients in a specialized hospital during the third wave: advance of age and increased mortality compared with the first/second waves

  1st/2nd waves 3rd wave
Number of patients 300 581
Age ([IQR], range) 53 ([33−72], 15−100) 78 ([62−83], 18−100)***
Male/female 171/129 (57/43) 289/292* (50/50)
Severity (mild/moderate I/moderate II/severe) 85/138/61/16 (28/46/20/6) 121/324/132/4 (21*/55**/23/1***)
Elapsed time from onset to hospitalization ([IQR], range) 7 ([4−9], 1−44) 4 ([2−7], 0−32)***
Pre-transportation site (homes/hotels/nursery homes/hospitals) 206/16/16/62 (69/5/5/21) 395/32/82/72 (68/6/14***/12**)
Duration of hospitalization ([IQR], range) 10 ([7−15], 1−85) 11 ([8−15], 1−49)
Prognosis (recovery/unchanged/worsened/died) 276/3/18/3 (92/1/6/1) 496/4/51/30 (85**/1/9/5)
  1. Data are expressed as the number of patients (percentage) or median ([25−75% interquartile range], range). 1st/2nd waves include patients admitted from March 25 to September 14, 2020. 3rd wave includes patients from September 15, 2020, to March 2, 2021. Data during the 1st/2nd waves were from reference no. 3
  2. *p < 0.05, **p < 0.01, ***p < 0.001 compared with the 1st/2nd waves