Factors other than smoking, such as socio economic status, could be involved in the development of COPD.OBJECTIVE: To investigate the association between chronic airflow obstruction and socio economic status in Morocco.DESIGN: Questionnaires were administered and spirometry tests performed as part of the BOLD Burden of Obstructive Lung Disease Study carried out in Fez, Morocco. ...Ageing, tobacco smoking, underweight, history of tuberculosis and asthma were also independently associated with a higher risk of airflow obstruction.CONCLUSION: Our findings suggest that airflow obstruction is associated with poverty in Morocco. ...