Table B.

Baseline olfactory and cognitive scores in the prediction of transition to dementia in 749 community-dwelling WHICAP study participants.

Age quartile (years)	Baseline Measure impaired/intact	B-SIT 0-10 impaired, 11-12 intact BOMC ≥ 6 impaired, 0-5 intact				B-SIT 0-8 impaired, 9-12 intact BOMC ≥ 7 impaired, 0-6 intact
		Transition to Dementia				Transition to Dementia
		No		Yes		No		Yes
		n	%	n	%	N	%	n	%
All	BOMC impaired	12	66.7	6	33.3	25	75.8	8	24.2
	B-SIT impaired	428	90.7	44	9.3	258	85.2	45	14.9
	Both impaired	87	61.3	55	38.7	40	50.6	39	49.4
	Both intact	113	96.6	4	3.4	317	94.9	17	5.1
	All	640	85.5	109	14.6	640	85.5	109	14.6
70-75	BOMC impaired	3	75.0	1	25	3	75.0	1	25
	B-SIT impaired	119	93.0	9	7.0	57	89.1	7	10.9
	Both impaired	12	66.7	6	33.3	7	63.6	4	36.4
	Both intact	37	100.0	0	0	104	96.3	4	3.7
	All	171	91.4	16	8.6	171	91.4	16	8.6
76-80	BOMC impaired	5	83.3	1	16.7	8	88.9	1	11.1
	B-SIT impaired	117	92.1	10	7.9	65	84.4	12	15.6
	Both impaired	21	65.6	11	34.4	10	55.6	8	44.4
	Both intact	38	95	2	5	98	97.0	3	3.0
	All	181	88.3	24	11.7	181	88.3	24	11.7
81-83	BOMC impaired	3	100.0	0	0.0	8	100.0	0	0.0
	B-SIT impaired	80	88.9	10	11.1	55	82.1	12	17.9
	Both impaired	31	67.4	15	32.6	17	63.0	10	37.0
	Both intact	21	100.0	0	0	55	94.8	3	5.2
	All	135	84.4	25	15.6	135	84.4	25	15.6
84-101	BOMC impaired	1	20.0	4	80.0	6	50.0	6	50.0
	B-SIT impaired	112	88.2	15	11.8	81	85.3	14	14.7
	Both impaired	23	50	23	50.0	6	26.1	17	73.9
	Both intact	17	89.5	2	10.5	60	89.6	7	10.5
	All	153	77.7	44	22.3	153	77.7	44	22.3

B-SIT: Brief Smell Identification Test, range 0-12, higher scores indicate better odor identification test performance, 0-10 impaired, 11-12 intact.

BOMC: Blessed Orientation Memory Concentration Test, range 0-28, higher scores indicate worse cognitive performance, ≥ 6 impaired, 0-5 intact