Table 3.

 Household characteristics and smoke alarm ownership. Values are numbers (percentages)

	Intervention	Control
Household characteristics
More than two years at current address	102/122 (84)	101/113 (89)
Any occupant aged 65 years or older	42/122 (34)	34/113 (30)
Any occupant aged 0-15 years	45/122 (37)	32/112 (29)
Single parent household*	16/122 (13)	15/113 (13)
Home is flat or bedsit†	107/120 (89)	105/111 (94)
Inspection and testing results
At least one alarm present	47/119 (39)	42/109 (38)
At least one alarm installed	36/119 (30)	35/109 (32)
At least one alarm correctly installed	19/119 (16)	19/109 (17)
At least one alarm installed and working‡	19/118 (16)	18/108 (17)
At least one alarm correctly installed and working‡	11/118 (9)	10/108 (9)

^*Defined as household with one adult and one or more children. 

^†Includes maisonettes occupying two floors. A bedsit is a single room used as a bedroom and a sitting room. 

^‡Based on positive smoke test. Testing refused because of sleeping child (n=1) or not possible because of ceiling height (n=1).