Correction to: BMC Public Health (2020) 20:1616

https://doi.org/10.1186/s12889-020-09721-2

It was highlighted that in the original article [1] the letter χ was missing in footnote b of Table 1 and on the equation in the Results section on page 5. This Correction article shows the correct Table 1 footnotes and the correct equation.

Table 1 General characteristics by outcome

Correct Table 1footnotes

a Mann-Whitney test

b χ2 test

c Mortality rate per 1000 person-year

COPD Chronic Obstructive Pulmonary Disease, CKD Chronic Kidney Disease, ICU Intensive Care Unit, IMSS Mexican Institute of Social Services, ISSSTE Institute of Social Security and Services for State Workers, SS Mexican Ministry of Health

Correct equation in Results section

2 = 31.83, df = 12, p < 0.001)

The original article has been updated.