Table 2 Correlation analysis’ results of COVID-19 patients.

From: Analysis of related factors of plasma antibody levels in patients with severe and critical COVID-19

 

Mild group (n = 21)

Severe/critical group (n = 58)

Age

 P value

0.014

0.000188

 Correlation coefficient ra

0.529

− 0.471

Gender

 P value

0.274

0.791

 Eta2b

–

–

Basic disease

 P value

0.00654

0.341

 Eta2

0.329

–

Smoking history

 P value

–

0.172

 Eta2

–

–

Allergic history

 P value

0.321

0.381

 Eta2

–

–

Previous infection history

 P value

–

–

 Eta2

–

–

Highest temperature over the course of the disease

 P value

0.520

0.086

 Eta2

–

–

Vaccination history

 P value

–

0.000286

 Eta2

–

0.211

Vaccination status

 P value

0.316

0.00147

 Eta2

–

0.211

Patient’s outcome

 P value

–

0.701

 Eta2

–

–

  1. aIn correlation analysis, the r refers to the correlation coefficient in continuous variables. R > 0, positive correlation; r < 0, negative correlation. ∣R∣ < 0.4, weak correlation; 0.4 ≤ ∣r∣ < 0.6, medium correlation; ∣r∣ ≥ 0.6, strong correlation.
  2. bIn correlation analysis, the eta value refers to the correlation coefficient in categorical variables. Eta2 < 0.06, weak correlation; 0.06 ≤ eta2 < 0.16, medium correlation; eta2 ≥ 0.16, strong correlation.
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