Longitudinal associations of household use of cleaning agents and asthma symptoms in women: the EGEA study.

Objective: To evaluate the associations between the evolution of household use of cleaning products with the asthma symptom score and its evolution over 8 years.

Methods: Our study is based on 509 women participating in the last two surveys of the Epidemiological study on the Genetics and Environment of Asthma (EGEA) study (EGEA2: 2003-2007 (44 years, 19% current smokers) and EGEA3: 2011-2013). We assessed an asthma symptom score and the use of household cleaning products through standardised questionnaires.