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. 2021 May 31;21:506. doi: 10.1186/s12879-021-06221-5

Table 1.

Comparisons of baseline demographics and characteristics in patients with severe COVID-19

Characteristics Early use group (n = 12) Late use group (n = 10)
Age (years) mean ± SD 65.6 ± 5.6 74.6 ± 4.6
Sex, No. (%)
 Male 6/12 (50%) 6/10 (60%)
Coexisting disease, No. (%)
 Hypertension 7/12 (58.3%) 4/10 (30%)
 Diabetes 3/12 (25%) 3/10 (30%)
 Malignant neoplasm 2/12 (16.7%) 1/10 (10%)
Symptoms
 Fever 9/12 (75%) 7/10 (70%)
 Cough 6/12 (50%) 3/10 (30%)
 Sputum 5/12 (41.7%) 4/10 (40%)
 Dyspnea 5/12 (41.7%) 4/10 (40%)
 Myalgia 5/12 (41.7%) 2/10 (20%)
 Fatigue 5/12 (41.7%) 1/10 (10%)
 Poor oral intake 4/12 (33.3%) 1/10 (10%)
Initial score on ordinal scale
 No limit of activity 0 0
 Limit of activity but no O2 4/12 (33.3%) 4/10 (40%)
 O2 with nasal prong 5/12 (41.7%) 2/10 (20%)
 O2 with facial mask 0 0
 High flow nasal cannula 3/12 (25%) 3/10 (30%)
 Non-invasive ventilation 0 0
 Invasive ventilation 0 0
 Baseline score missing 0 1/10 (10%)
Initial PaO2/FiO2 ratio 124.89 ± 42.60 133.35 ± 49.40

COVID-19, coronavirus disease 2019; SD, standard deviation

Data are expressed as mean ± SD or number (%)