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Table 1 Characteristics and clinical presentations in patients with COVID-19

From: Sociodemographic determinants and clinical risk factors associated with COVID-19 severity: a cross-sectional analysis of over 200,000 patients in Tehran, Iran

Characteristics Women Men Overall
n % n % n %
Age (years)
 0–9 3920 4.2 4955 4.4 8875 4.3
 10–19 1627 1.7 1931 1.7 3558 1.7
 20–29 6278 6.7 7417 6.6 13695 6.7
 30–39 13345 14.3 16332 14.6 29677 14.4
 40–49 13502 14.4 16773 15.0 30275 14.7
 50–59 15551 16.6 18758 16.7 34309 16.7
 60–69 16471 17.6 19338 17.3 35809 17.4
 70–79 13189 14.1 14753 13.2 27942 13.6
 80 and over 9729 10.4 11785 10.5 21514 10.5
Residing area
 West 32287 34.5 37607 33.6 69894 34.0
 Central, South 23137 24.7 26167 23.4 49304 24.0
 North, East 38188 40.8 48268 43.1 86456 42.0
Positive history of smoking 421 0.4 2735 2.4 3156 1.5
Positive history of opioids 306 0.3 1595 1.4 1901 0.9
Positive history of exposure to SARS-CoV-2 30920 33.0 37497 33.5 68417 33.3
Underlying diseases
 Diabetes 10384 11.1 9791 8.7 20175 9.8
 Hypertension 10827 11.6 10019 8.9 20846 10.1
 CVD 8798 9.4 10558 9.4 19355 9.4
 Cancer 1906 2.0 2163 1.9 4069 2.0
 Asthma 1488 1.6 1246 1.1 2734 1.3
 Chronic respiratory diseases 1375 1.5 1781 1.6 3156 1.5
 Chronic liver diseases 429 0.5 535 0.5 964 0.5
 Chronic kidney diseases 1776 1.9 2477 2.2 4253 2.1
 Chronic neurological diseases 896 1.0 991 0.9 1887 0.9
 Chronic immune deficiency diseases 364 0.4 262 0.2 626 0.3
 Chronic haematological diseases 520 0.6 493 0.4 1013 0.5
 HIV/AIDS 73 0.1 81 0.1 154 0.1
Clinical presentations
 Fever 31914 34.1 41465 37.0 73379 35.7
 Cough 43317 46.3 52321 46.7 95638 46.5
 Muscle ache 28439 30.4 32655 29.1 61094 29.7
 Difficulty breathing 39842 42.6 49102 43.8 88944 43.2
 Chest pain 2476 2.6 2833 2.5 5309 2.6
 Loss of smell 1909 2.0 2055 1.8 3964 1.9
 Loss of taste 1189 1.3 1309 1.2 2498 1.2
 Loss of appetite 4623 4.9 5491 4.9 10114 4.9
 Nausea 5243 5.6 4860 4.3 10103 4.9
 Diarrhea 2969 3.2 3371 3.0 6340 3.1
 Headache 5589 6.0 5558 5.0 11147 5.4
 Vertigo 1874 2.0 1922 1.7 3796 1.8
 Impaired consciousness 3522 3.8 4554 4.1 8076 3.9
 Seizure 311 0.3 366 0.3 677 0.3
 Paresis 348 0.4 452 0.4 800 0.4
 Paraplegia 127 0.1 129 0.1 256 0.1
 Skin lesions 97 0.1 104 0.1 201 0.1
Positive chest CT findings 49475 52.9 62371 55.7 111846 54.4
Admitted to ICU 15899 17.0 20793 18.6 36692 17.8
  1. n number of patients in each sub-category, % percentage from the total number of patients