1.
The effect of indoor air quality in Dutch higher education classrooms on students' health and performance
Diagnosis (N) per month between March 2020 and March 2021.
2.
3.
Number of episodes per city between March 2020 and March 2021.
Baseline characteristics of study population and diagnosis groups.
Symptoms per diagnosis group.
Disease course per group between March 2020 and March 2021.
