Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Description
Source of information
15.Were there filters on vents and/or vent fans to control dust emissions in bui
Imputation and derivation
Imputation
15.Were there filters on vents and/or vent fans to control dust emissions in bui
Others
Security
15.Were there filters on vents and/or vent fans to control dust emissions in bui