Table 2 Clinical features of patients in COVID-19 and non-COVID-19 Feature Non-COVID-19 (n = 66) COVID-19 (n = 70) p value Sex   Male# 43 (65.15%) 41 (58.57%) 0.430a   Female# 23 (34.85%) 29 (41.43%)   Age (years) 46.73 ± 25.00 42.93 ± 13.32 0.275b Vital signs   Systolic blood pressure (mmHg) 126.92 ± 23.07 127.07 ± 15.16 0.965b   Diastolic blood pressure (mmHg) 77.74 ± 15.72 80.39 ± 10.51 0.254b   Respiration rate (bpm) 25.20 ± 7.29 19.86 ± 1.90 < 0.001b*   Heart rate (bpm) 101.59 ± 20.36 86.06 ± 13.34 < 0.001b*   Temperature (°C) 37.61 ± 1.06 37.12 ± 0.83 0.003b* Signs   Dry cough# 56 (84.85%) 48 (68.57%) 0.025a*   Fatigue# 8 (12.12%) 22 (31.43%) 0.007a*   Sore throat# 6 (9.09%) 9 (12.86%) 0.483a   Stuffy# 4 (6.06%) 2 (2.86%) 0.623a   Runny nose# 3 (4.55%) 3 (4.29%) 0.731a White blood cell count (× 109/L) 11.48 ± 5.36 5.27 ± 2.33 < 0.001b* White blood cell count category < 0.001c*   Low# 0 (0.00%) 2 (2.86%)   Normal# 27 (40.91%) 63 (90.00%)   High# 39 (59.09%) 5 (7.14%) Lymphocyte count (× 109/L) 1.57 ± 1.33 1.25 ± 0.68 0.086b Lymphocyte count category < 0.001c*   Low# 24 (36.36%) 32 (45.71%)   Normal# 35 (53.03%) 37 (52.86%)   High# 7 (10.61%) 1 (1.43%) Neutrophil count (× 109/L) 8.97 ± 4.90 3.53 ± 2.17 < 0.001b* Neutrophil count category < 0.001c*   Low# 3 (4.55%) 8 (11.43%)   Normal# 23 (34.85%) 59 (84.29%)   High# 40 (60.61%) 3 (4.29%) C-reactive protein (mg/L) 69.30 ± 65.88 26.37 ± 30.97 < 0.001b* Procalcitonin (ng/mL) 3.36 ± 8.98 0.26 ± 0.84 0.007b* *Data with statistical significance. pa: chi-square test, pb: Student’s t test. pc: Kruskal-Wallis H test #Results are measurements with corresponding ratio in parentheses