Table 1.

Excluded studies.

Study	Reason for exclusion
	Not a quantitative intervention study	If a quantitative study
		No quantitative measure of change in the communication of the person with dementia	Intervention not directed at improving verbal communication of person with dementia	Less than 50% of participants have diagnosis of AD
Abrahams and Camp [38]		X
Acton et al. 1999 [39]	X
Alm et al. 2004 [40]		X
Arkin, 1996 [41]			X
Arkin, 1999 [42]		X
Arkin, 2001 [43]			X
Arkin and Mahendra, 2001 [44]
Arkin et al. 2000 [45]		X
Beach and Kramer 1999 [46]	X
Bleathman and Morton 1992 [47]	X
Boczko, 1994 [48]	X
Bohling, 1991 [49]		X	X
Bourgeois 1993 [50]			X
Bourgeois, 2004 [51]		X	X
Brotons and Koger 2000 [52]
Done and Thomas, 2001[53]		X	X	X
Fried-Oken et al., 2008 [54]		X
Friedman and Tappen, 1991 [55]		X
Götell et al 2002 [56]
Hendryx-Bendalov 1999 [57]	X
Hopper 2001 [58]	X
Hopper et al., 1998 [59]			X
Mahendra and Arkin, 2004 [60]		X
McPherson et al. 2001 [61]				X
Moore and Davis, 2002 [62]	X
Murray et al., 2003 [63]			X
Newman and Ward, 1992 [64]			X
Normann et al., 2002 [65]	X		X
Orange et al., 1995 [33]	X
Orange and Colton-Hudson (1998) [21]		X
Perkins et al., 1998 [66]	X
Quayhagen and Quayhagen, 1989 [67]		X
Quayhagen et al., 1995 [68]		X
Quayhagen and Quayhagen, 1996 [69]		X
Quayhagen et al., 2000 [70]		X
Quayhagen and Quayhagen, 2001 [71]		X
Ramanathan-Abbott, 1994 [72]	X
Richter et al. 1993 [73]	X
Richter et al. 1995 [17]	X
Ripich et al. 1998 [29]		X
Ripich et al. 1999 [74]		X
Ripich, 1994 [75]		X
Ripich et al. 1995 [28]		X
Sabat 1991 [76]	X
Sabat 1994 [77]	X
Schneider and Camp, 2002 [78]		X
Small et al., 2003 [79]	X		X
Small et al. 1997 [80]			X
Sobel 2001 [81]			X
Savundranayagum et al. 2007 [82]	X
Tappen et al. 1997 [83]	X
Tappen et al. 2002 [84]			X
Touzinsky 1998 [85]		X
Watson et al. 1999 [86]	X