Olmsted County, Minnesota Air Quality (OMAQ) Study


About this study

The purpose of this study is to develop an Olmsted County nitrogen dioxide (NO2) model by assessing residential levels of indoor (eg, from gas stove or oven) and outdoor NO2 (eg, from motor fuels and power plants) using passive monitors placed for a 4-week period.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Age 5-17 years as of 12/31/2019.
  • Asthma (history of physician diagnosis of asthma + on asthma controller medication [eg, inhaled corticosteroid, leukotriene receptor antagonist].
  • Currently living in Olmsted County.

Exclusion Criteria: 

  • Family who plans to move within 10 months (before July 2019).
  • Family who does not have safe place for placing NO2 tubes (see the attached OMAQ Screening Interview).
  • Family whose child has chronic lung disease (eg, pulmonary fibrosis, cystic fibrosis, lung cancer).

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Chung Il Wi, M.D.

Closed-enrolling by invitation

What is this? (?)
Not open to everyone who meets the eligibility criteria, but only those invited to participate by the study team.

Contact information:

Julie Porcher



More information


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