Table 2.

ADI quality score included in the meta-analysis on the prevalence of dementia in Europe (1980–2014)

First author and/or name of survey	Range of time considered	Italian studies included	ADI quality score	ADI quality score (mean ± SD; median) (mean ± SD; median)
Hofman, 1991, EURODEM [26]	1980–1990	Rocca et al., 1990 [9]	8	8
Lobo, 2000, EURODEM [27]	1990–2000	ILSA, 1997 [10]	9	9
Reynish, 2006, EUROCODE [1]	1990–2007	Prencipe et al., 1996 [11]	9	7.3 ± 1.5; 7.5
		Ferini-Strambi et al., 1997 [14]	5
		Azzimondi et al., 1998 [16]	8
		Ravaglia et al., 2002 [22]	7
		Tognoni et al., 2005 [18]	7.5
Galeotti, 2013, ALCOVE [6]	2007–2011	Lucca et al., 2011 [19]	10.5	10.5
Prince, 2013 [4]	1980–2009	Rocca et al., 1990 [9]	8	7.4 ± 1.1; 7.5
		D’Alessandro et al., 1996 [15]	7.5
		Prencipe et al., 1996 [11]	9
		Ferini-Strambi et al., 1997 [14]	5
		Azzimondi et al., 1998 [16]	8
		De Ronchi et al., 1998 [12]	6
		aDi Bari et al., 1999 [25]	8
		Ravaglia et al., 1999 [20]	7.5
		aFerrucci et al., 2000 [24]	8
		Cristina et al., 2001 [17]	6.5
		Ravaglia et al., 2002 [22]	7
		Benedetti et al., 2002 [13]	8.5
		Tognoni et al., 2005 [18]	7.5

ADI Alzheimer Disease International, ALCOVE Alzheimer Cooperative Valuation in Europe, EuroCoDe European Collaboration for Dementia Group, ILSA Italian Longitudinal Study on Aging

^aFor the calculation of the ADI quality score, the items reported in these publications have been integrated with those reported in the pooled data of Francesconi et al. [23]