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 2
Demographic and comorbidity information of patients with positive SARS-CoV-2 rRT-PCR based on cycle threshold value (Ct).
Variable
Number (%) of cycle threshold value (Ct)
value
A (n = 336)
B (n = 2464)
C (n = 451)
Age
<1
2 (0.6)
15 (0.6)
15 (3.3)
<0.001
1–14
14 (4.2)
41 (1.7)
29 (6.4)
15–24
10 (3)
48 (2)
12 (2.7)
25–44
67 (19.9)
535 (21.8)
74 (16.4)
45–64
110 (32.7)
998 (40.6)
144 (31.9)
≥65
133 (39.6)
823 (33.4)
177 (39.2)
Sex
Male
159 (47.3)
1250 (50.7)
224 (49.7)
0.48
Female
177 (52.7)
1214 (49.3)
227 (50.3)
Outcome
Discharge
280 (83.3)
2221 (90.1)
415 (92)
<0.001
Death
56 (16.7)
243 (9.9)
36 (8)
Comorbidity
Cardiovascular disease
125 (37)
765 (31.1)
149 (33)
0.06
Diabetes
110 (32.7)
664 (27)
122 (27)
0.08
Hypertension
63 (18.8)
322 (13.1)
62 (13.8)
0.018
Brain and neurologic disorder
16 (4.8)
104 (4.2)
22 (4.9)
0.7
Kidney diseases
24 (7.1)
83 (3.4)
25 (5.5)
0.001
Malignancy
12 (3.6)
60 (2.4)
27 (6)
<0.001
Respiratory disorder
9 (2.7)
81 (3.3)
15 (3.3)
0.83
GI diseases
3 (0.9)
29 (1.2)
7 (1.6)
0.68
Blood disorder
4 (1.2)
14 (0.6)
8 (1.8)
0.02
Liver disease
2 (0.6)
19 (0.8)
4 (0.9)
0.89
Pregnancy
3(0.9)
23(0.9)
6 (1.3)
0.7
Others
8 (2.4)
61 (2.5)
9 (2)
0.8
No comorbidity
126 (8.9)
1103 (78.1)
183 (13)
0.01
≥ 1 comorbidity
210 (11.4)
1361 (74)
268 (14.6)
P values of < 0.05 were considered statistically significant, and it is shown in bold. A: Ct 10–20; B: Ct 21–30; C: Ct 31–40.
