The goals of this study are to determine if replacing gas stoves with portable electric hot plates and electric toaster ovens will improve indoor air quality and asthma control. Researchers will enroll participants with poorly controlled asthma and provide them with hot plates and toaster ovens to use instead of gas stoves. Researchers will measure indoor air quality about 1-2 weeks before and about 2-3 months after providing portable appliances. Participants will answer questions about their asthma symptoms and take lung function tests about 1-2 weeks before and about 2-3 months after using portable appliances.
Currently use gas stove for cooking or baking at least three times a week
Poorly controlled asthma as defined by an Asthma Control Questionnaire score of 1.5 or larger
Impaired decision making capacity
Pregnancy
Crossover
Portable cooking appliances
Other interventionThe investigators will leave gas stoves in place but will instruct participants to preferentially use two relatively inexpensive portable electric appliances that the investigators will provide. Cooking will be done with an electric induction hot plate and baking with an electric toaster oven.
Change in asthma control
Change in Asthma Control Questionnaire score from baseline to final assessment. Asthma Control Questionnaire scores can range from 0 to 6 with higher scores indicating poor asthma control.
Change in indoor nitrogen dioxide levels
Change in nitrogen dioxide level from baseline to final assessment
Change in forced expiratory volume in 1 second (FEV1)
Changes in FEV1 from baseline to final assessment.
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