Table 1 Search terms and search strategy used to identify studies on measured air pollution exposures and respiratory disease

1

(Asthma OR “chronic bronchitis” OR “allergic rhinitis” OR “COPD” OR “chronic obstructive pulmonary disease”)

(AB=Asthma OR AB=“chronic bronchitis” OR AB=“allergic rhinitis” OR AB=“COPD” OR AB=“chronic obstructive pulmonary disease”)

ABS(Asthma OR “chronic bronchitis” OR “allergic rhinitis” OR “COPD” OR “chronic obstructive pulmonary disease”)

2

(“air pollution” OR “climate change” OR “urbanization” OR “Sulfur” OR “SO” OR “Nitrogen” OR “NOx” OR “ozone” OR “carbon monoxide” OR “PM2.5” OR “PM10” OR “particulate matter”)

(AB=“air pollution” OR AB=“climate change” OR AB=“urbanization” OR AB=“Sulfur” OR AB=“SO” OR AB=“Nitrogen” OR AB=“NOx” OR AB=“ozone” OR AB=“carbon monoxide” OR AB=“PM2.5” OR AB=“PM10” OR AB=“particulate matter”)

ABS(“air pollution” OR “climate change” OR “urbanization” OR “Sulfur” OR “SO” OR “Nitrogen” OR “NOx” OR “ozone” OR “carbon monoxide” OR “PM2.5” OR “PM10” OR “particulate matter”)

3

(“Africa” OR “Angola” OR “Benin” OR “Botswana” OR “Burkina Faso” OR “Burundi” OR “Cameroon” OR “Central African Republic” OR “Chad” OR “Congo” OR “Cote d’Ivoire” OR “Eritrea” OR “Ethiopia” OR “Gabon” OR “Gambia” OR “Ghana” OR “Guinea” OR “Guinea-Bissau” OR “Kenya” OR “Lesotho” OR “Liberia” OR “Madagascar” OR “Malawi” OR “Mali” OR “Mauritania” OR “Mauritius” OR “Mozambique” OR “Namibia” OR “Niger” OR “Nigeria” OR “Rwanda” OR “Senegal” OR “Sierra Leone” OR “Somalia” OR “Tanzania” OR “Togo” OR “Uganda” OR “Zaire” OR “Zambia” OR “Zimbabwe” OR “South Africa”)

(AB=“Africa” OR AB=“Angola” OR AB=“Benin” OR AB=“Botswana” OR AB=“Burkina Faso” OR AB=“Burundi” OR AB=“Cameroon” OR AB=“Central African Republic” OR AB=“Chad” OR AB=“Congo” OR AB=“Cote d’Ivoire” OR AB=“Eritrea” OR AB=“Ethiopia” OR AB=“Gabon” OR AB=“Gambia” OR AB=“Ghana” OR AB=“Guinea” OR AB=“Guinea-Bissau” OR AB=“Kenya” OR AB=“Lesotho” OR AB=“Liberia” OR AB=“Madagascar” OR AB=“Malawi” OR AB=“Mali” OR AB=“Mauritania” OR AB=“Mauritius” OR AB=“Mozambique” OR AB=“Namibia” OR AB=“Niger” OR AB=“Nigeria” OR AB=“Rwanda” OR AB=“Senegal” OR AB=“Sierra Leone” OR AB=“Somalia” OR AB=“Tanzania” OR AB=“Togo” OR AB=“Uganda” OR AB=“Zaire” OR AB=“Zambia” OR AB=“Zimbabwe” OR AB=“south africa”)

ABS(“Africa” OR “Angola” OR “Benin” OR “Botswana” OR “Burkina Faso” OR “Burundi” OR “Cameroon” OR “Central African Republic” OR “Chad” OR “Congo” OR “Cote d’Ivoire” OR “Eritrea” OR “Ethiopia” OR “Gabon” OR “Gambia” OR “Ghana” OR “Guinea” OR “Guinea-Bissau” OR “Kenya” OR “Lesotho” OR “Liberia” OR “Madagascar” OR “Malawi” OR “Mali” OR “Mauritania” OR “Mauritius” OR “Mozambique” OR “Namibia” OR “Niger” OR “Nigeria” OR “Rwanda” OR “Senegal” OR “Sierra Leone” OR “Somalia” OR “Tanzania” OR “Togo” OR “Uganda” OR “Zaire” OR “Zambia” OR “Zimbabwe” OR “south africa”)