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Table 1 Characteristics of patients

From: Lethality risk markers by sex and age-group for COVID-19 in Mexico: a cross-sectional study based on machine learning approach

Clinical variable

Males

Females

Total

P-value*

Demographic

    

Sex

6245 (54%)

5319 (46%)

11,564 (100%)

 < 0.001

Age

50.61 ± 17.68

47.37 ± 17.19

49.12 ± 17.53

Age-group

    

 < 19

134 (1%)

140 (1%)

274 (2%)

 20—29

657 (6%)

696 (6%)

1353 (12%)

 30—39

1091 (9%)

1127 (10%)

2218 (19%)

 40—49

1149 (10%)

1072 (9%)

2221 (19%)

 50—59

1150 (10%)

951 (8%)

2101 (18%)

 60—69

1034 (9%)

700 (6%)

1734 (15%)

 > 70

1030 (9%)

633 (6%)

1663 (14%)

Comorbidities

    

 Hypertension

1567 (14%)

1225 (11%)

2792 (24%)

 < 0.001

 Diabetes

1266 (11%)

997 (9%)

2263 (20%)

 < 0.001

 Obesity

1005 (9%)

954 (8%)

1959 (17%)

0.487

 Smoking

547 (5%)

190 (2%)

737 (6%)

0.004

 CKD

219 (2%)

126 (1%)

345 (3%)

 < 0.001

 Cardiovascular diseases

150 (1%)

106 (1%)

256 (2%)

 < 0.001

 COPD

101 (1%)

129 (1%)

230 (2%)

 < 0.001

 Asthma

88 (1%)

132 (1%)

220 (2%)

0.042

 Immunosuppression

36 (0%)

38 (0%)

74 (1%)

0.016

Symptoms

    

 Cough

5469 (47%)

4553 (39%)

10,022 (87%)

 < 0.001

 Headache

5211 (45%)

4609 (40%)

9820 (85%)

 < 0.001

 Fever

5429 (47%)

4353 (38%)

9782 (85%)

 < 0.001

 Myalgia

4677 (40%)

3979 (34%)

8656 (75%)

0.007

 Arthralgia

4444 (38%)

3719 (32%)

8163 (71%)

 < 0.001

 Odynophagia

3771 (33%)

3281 (28%)

7052 (61%)

0.019

 General discomfort

3707 (32%)

2877 (25%)

6584 (57%)

 < 0.001

 Chills

3297 (29%)

2760 (24%)

6057 (52%)

0.310

 Dyspnea

3113 (27%)

2025 (18%)

5138 (44%)

 < 0.001

 Sudden onset of symptoms

2191 (19%)

1802 (16%)

3993 (35%)

0.019

 Chest pain

2079 (18%)

1732 (15%)

3811 (33%)

 < 0.001

 Rhinorrhea

1796 (16%)

1760 (15%)

3556 (31%)

 < 0.001

 Diarrhea

1301 (11%)

1155 (10%)

2456 (21%)

 < 0.001

 Anosmia

933 (8%)

995 (9%)

1928 (17%)

 < 0.001

 Irritability

940 (8%)

816 (7%)

1756 (15%)

0.060

 Dysgeusia

807 (7%)

915 (8%)

1722 (15%)

 < 0.001

 Polypnea

1065 (9%)

650 (6%)

1715 (15%)

 < 0.001

 Abdominal pain

741 (6%)

756 (7%)

1497 (13%)

0.551

 Conjunctivitis

638 (6%)

580 (5%)

1218 (11%)

 < 0.001

 Vomiting

424 (4%)

459 (4%)

883 (8%)

0.240

 Cyanosis

239 (2%)

137 (1%)

376 (3%)

 < 0.001

Medication

    

 Use of antipyretics

3268 (28%)

2793 (24%)

6061 (52%)

0.014

 Days elapsed from the onset of symptoms to the start of medical care

3.51 ± 2.42

3.42 ± 2.37

3.47 ± 2.40

-

Lethality (death/no death)

1084 (9%)

538 (5%)

1622 (14%)

-

  1. COPD chronic obstructive pulmonary disease, CKD chronic kidney disease. Immunosuppression: due to diseases like cancer, immunosuppressive drugs, and transplantation
  2. *P-value on chi-square test