Table 1: Condition of residence in cases and controls.

VariableCasesControls values

ResidenceUrban46 (76.7)85 (85)0.185
Rural14 (23.3)15 (15)

FloorGround14 (23)8 (8)0.039
First9 (15)14 (14)
Second14 (23)26 (26)
Third11 (18)24 (24)
Fourth6 (10)18 (18)
Fifth4 (6.7)7 (7)
Sixth or higher2 (3.3)3 (3)