Table 2.

Clinical symptoms and vital signs on admission

Clinical Symptoms and Vitals on Admission	COVID-19 (n = 65)	Influenza (n = 74)	P Value*
Symptom duration before admission, median (IQR), d†	7 (5–13)	3.5 (2–7)	<0.001
Known sick contact, n/total n (%)	32/55 (58.2)	19/48 (39.6)	0.06
Symptoms on presentation, n (%)‡
Cough	53 (81.5)	50 (67.6)	0.06
Sputum production	18 (27.7)	25 (33.8)	0.44
Shortness of breath	54 (83.1)	51 (68.9)	0.05
Sore throat	10 (15.4)	5 (6.8)	0.10
Nasal congestion	7 (10.8)	11 (14.9)	0.47
Rhinorrhea	9 (13.9)	9 (12.2)	0.77
Subjective fever	41 (63.1)	30 (40.5)	0.008
Chills	22 (33.9)	16 (21.6)	0.11
Headache	13 (20.0)	9 (12.2)	0.21
Myalgias	21 (32.3)	15 (20.3)	0.11
Fatigue	23 (35.4)	35 (47.3)	0.16
Vital signs on ICU admission, n/total n (%)	—	—	—
Fever, temperature >100.4°F or 38°C, n/total n (%)	28/64 (43.8)	27/68 (39.7)	0.64
Heart rate >100 beats/min	21/65 (32.3)	46/72 (63.9)	<0.001
Respiratory rate ≥20 breaths/min	49/65 (75.4)	57/72 (79.2)	0.60
SOFA score on ICU admission, median (IQR)§	6 (3–11)	6.5 (3–10)	0.62

Definition of abbreviations: COVID-19 = coronavirus disease; ICU = intensive care unit; IQR = interquartile range; SOFA = sequential organ failure assessment.

The total number is given if values are missing.

^*P values were calculated using a t test for continuous variables and a chi-square test or Fisher exact test for binary and categorical variables.

^†Not reported in 11 patients.

^‡Symptoms were assumed to be absent if not reported.

^§Highest SOFA score within 24 hours of ICU admission.