Study	Reason for exclusion
Botruff 1992	Unable to obtain full paper or contact author, so unable to assess if met the inclusion criteria.
Culp 1999	Not an intervention trial.
Kendrick 2001	Not designed to increase smoke alarms.
Linyear 1982	Unable to obtain full paper or contact author, so unable to assess if met the inclusion criteria.
Nunn 1998	Not designed to increase smoke alarms.
Petridou 1997	Not designed to increase smoke alarms.
Rowland 2002	Not designed to increase smoke alarms; compared different types of smoke alarms to assess function over time.
Shults 1998	Not a controlled trial.
Sundelin 1996	Not designed to increase smoke alarms.
Treadwell 2000	Not a controlled trial.
Ytterstad 1998	Not designed to increase smoke alarms.