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Haze crisis (n = 298)Item Total sample Men (N = 298) (120) N Age ?18?9 (210) ?30?9 (88) Ethnicity ?Chinese ?Indian, Malay, other ethnicities Marital status ?Married ?Others: Single, divorced, widow Occupation ?Students ?Working indoor ?Working outdoor Personal possession of N--95 mask ?Inadequate ery inadequate ?Just enough ?very adequate Perceived usefulness of N-95 mask ?Useless ?absolutely us