Table 3.

 Results of interaction tests for subgroup analyses

Outcome	Hospital v community			Risk factors v unselected			Doctor v no doctor			Knowledge or referral v high intensity intervention
	χ2	P value		χ2	P value		χ2	P value		χ2	P value
No of fallers	0	1		2.75	0.10		0	1		3.95	0.05
Fall related injuries	0.1	0.75		0.42	0.52		0.10	0.75		—	—
No of recurrent fallers	—	—		—	—		—	—		0.63	0.43
Admissions to hospital	0.75	0.39		0.06	0.81		1.12	0.29		0.32	0.57
Attendance at emergency department	—	—		—	—		2.80	0.09		2.80	0.09
Death	0.23	0.63		1.80	0.18		0.45	0.50		0.29	0.59
Move to institutional care	0.30	0.58		—	—		0.30	0.58		0	1.00

Subgroup analyses were done only when at least two trials were in each subgroup.