Housing characteristics in relation to exhaled nitric oxide in China.

OBJECTIVE:To investigate indoor factors affecting fractional exhaled nitric oxide (FeNO) in community residents. METHODS:A total of 2404 adults (865 men, 1539 women, mean age 51.7 ± 13.3 years) were recruited to the study. Factors affecting FeNO were analyzed by multiple linear regression analysis. RESULTS:Participants without a kitchen exhaust fan/hood had higher FeNO (GM: 10.21%, 95% CI: 4.18%-16.59%). Participants engaged in home cooking who used only liquefied petroleum gas had higher FeNO (GM: 5.75%, 95% CI: 0.10%-11.73%) compared to those using natural gas for residential (home) cooking. CONCLUSION:Nonuse of a kitchen exhaust fan/hood and use of liquefied petroleum gas among persons engaged in home cooking were associated with higher FeNO levels.