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Occupational endotoxin exposure in association with atopic sensitization and respiratory health in adults: Results of a 5-year follow-up

Table 1

General characteristics of the study population at baseline and follow-up.

Differences between baseline and follow-up are tested for statistical differences: paired t-test for continuous variables, McNemar’s paired chi squared test for binary outcomes. The number of persons included in each analysis depends on the source of the outcome data: questionnaire (n = 234), lung function (n = 161), or serological data (n = 212).

Table 1

doi: https://doi.org/10.1371/journal.pone.0189097.t001