A Large Retrospective Study of Epidemiological Characteristics of COVID-19 Patients in the North of Iran: Association between SARS-CoV-2 RT-PCR Ct Values with Demographic Data
Table 1
Demographic and comorbidity information of suspected patients with COVID-19 in total population, negative and positive SARS-CoV-2 rRT-PCR.
Variable
Total (n = 8318) number (%)
PCR negative (n = 5068) number (%)
PCR positive (n = 3250) number (%)
value
Age
<1
194 (2.33)
162 (3.2)
32 (1)
<0.001
1–14
542 (6.5)
458 (9.1)
84 (2.6)
15–24
264 (3.2)
194 (3.8)
70 (2.1)
25–44
1447 (17.4)
771 (15.2)
676 (20.8)
45–64
2740 (33)
1489 (29.4)
1251 (38.6)
≥65
3123 (37.6)
1990 (39.3)
1133 (34.9)
Sex
Male
4287 (51.5)
2655 (52.4)
1632 (50.2)
0.053
Female
4031 (48.5)
2413 (47.6)
1618 (49.8)
Outcome
Discharge
7679 (92.3)
4764 (94)
2915 (89.7)
<0.001
Death
639 (7.7)
304 (6)
335 (10.3)
Comorbidity
Cardiovascular disease
2818 (33.9)
1779 (35.1)
1039 (32)
0.003
Diabetes
2140 (25.7)
1244 (24.6)
896 (27.6)
0.002
Hypertension
1026 (12.3)
579 (11.4)
447 (13.8)
0.002
Brain and neurologic disorder
576 (6.9)
434 (8.6)
142 (4.4)
<0.001
Kidney diseases
516 (6.2)
384 (7.6)
132 (4.1)
<0.001
Malignancy
515 (6.2)
416 (8.2)
99 (3.1)
<0.001
Respiratory disorder
356 (4.3)
251 (4.6)
105 (3.2)
<0.001
GI diseases
168 (2)
129 (2.6)
39 (1.2)
<0.001
Blood disorder
125 (1.5)
99 (2)
26 (0.8)
<0.001
Liver disease
90 (1.1)
65 (1.3)
25 (0.8)
0.027
Pregnancy
80 (1)
48 (1)
32 (1)
0.86
Others
173 (2.1)
95 (1.9)
78 (2.4)
0.1
No comorbidity
3216 (38.7)
1805 (35.6)
1411 (43.4)
<0.001
≥1 comorbidity
5102 (61.3)
3263 (64.4)
1839 (56.6)
P values of < 0.05 were considered statistically significant, and it is shown in bold.
