Table 1.

Olfactory studies of mild cognitive impairment

Author	Year	Olfactory test type	MCI (n)	HOA (n)	Odour identification test
Bahar-Fuchs	2010S1	I	24	19	UPSIT*
Bahar-Fuchs	2010S3	I, M	13	11	UPSIT*
Bahar-Fuchs	2010S2	I	13	10	UPSIT*
Bahar-Fuchs	2011	I	25	22	UPSIT*
Conti	2013	Di, I, M	88	46	CA-SIT
DeArment	2008	I	8	8	UPSIT
Devanand	2000	I	90	45	UPSIT
Devanand	2008	I	148	63	UPSIT
Devanand	2010S9	I	290	802	UPSIT
Devanand	2010S10	I	127	59	UPSIT
Djordjevic	2008	De, I	51	33	UPSIT
Eibenstein	2005	I	29	29	SS-OIT
Huart	2015	De, Di	13	13	–
Laakso	2009	I, M	72	486	Homemade
Lehrner	2009	I	64	40	UPSIT
Lojkowska	2011	De, I	49	33	SS-OIT
Magerova	2011	I	30	11	SS-OIT
McKinnon	2010	I	33	207	UPSIT
Peters	2003	De, Di, I	8	8	UPSIT
Seligman	2013	I	112	132	SS-OIT
Servello	2015	De, Di, I	25	28	SS-OIT
Sparks	2005	I	21	42	UPSIT
Steinbach	2010	I, De, Di	29	29	SS-OIT
Tabert	2005	I	147	63	UPSIT
Turana	2014	I	51	58	Homemade
Vasavada	2015	I	12	27	UPSIT
Vyhnalek	2015	I	107	27	MHST
Wang	2002	I	28	30	B-SIT
Westervelt	2008	I	88	21	B-SIT
Williams	2009	Di, I	21	47	SS-OIT
Wilson	2007	I	177	412	B-SIT

This table lists only those studies (k=31) included in the current meta-analysis. Studies are presented in alphabetical order by first author. Publication year, olfactory test type (I, identification; De, detection; Di, discrimination; M, memory) and sample sizes of the mild cognitive impairment (MCI) and healthy older adult (HOA) groups are included. Superscripted numbers are used to disambiguate studies published in the same calendar year (Refer to the online supplemental material Reference List).

^*Modified version of the UPSIT.

B-SIT; Brief Smell Identification Test; CA-SIT Culturally Adapted Smell Identification Test; MHST Motol Hospital Smell Test; SS-OIT Sniffin' Sticks-Odor Identication Test; UPSIT University of Pennsylvania Smell Identification Test.