Table 3 Correlation coefficients between demographic/clinical factors and long-COVID development.

From: A multinational cross-sectional study on the prevalence and predictors of long COVID across 33 countries

Parameter

r

95% CI

P value

Age

0.02

(0.00, 0.04)

0.151

BMI

0.02

(0.00, 0.04)

0.151

Number of Cigarettes

− 0.02

(− 0.03, 0.00)

0.556

Ethnicity

− 0.10

(− 0.12, − 0.08)

< 0.001

Vaccine doses

− 0.08

(− 0.1, − 0.06)

< 0.001

Smoking duration

− 0.02

(− 0.03, 0.00)

0.614

Smoking

− 0.03

(− 0.04, − 0.01)

0.047

Isolation

0.01

(0.00, 0.03)

0.614

  1. R, Correlation coefficient; CI, Confidence Interval.