Table C.

Baseline olfactory and cognitive scores in the prediction of cognitive decline in 724 community-dwelling WHICAP study participants.

Age quartile (years)	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
		Cognitive Decline				Cognitive Decline
		No		Yes		No		Yes
		N	%	n	%	N	%	n	%
All	BOMC impaired	15	83.3	3	16.7	27	81.8	6	18.2
	B-SIT only	365	79.0	97	21.0	221	75.7	71	24.3
	Both Impaired	92	71.3	37	28.7	46	66.7	23	33.3
	Both Intact	105	91.3	10	8.7	283	85.8	47	14.2
	All	577	79.7	147	20.3	577	79.7	147	20.3
70-75	BOMC impaired	4	100.0	0	0	4	100.0	0	0.0
	B-SIT impaired	112	88.2	15	11.8	54	85.7	9	14.3
	Both impaired	8	50.0	8	50.0	4	40.0	6	60.0
	Both intact	35	94.6	2	5.4	97	90.7	10	9.4
	All	159	86.4	25	13.6	159	86.4	25	13.6
76-80	BOMC impaired	5	83.3	1	16.7	7	77.8	2	22.2
	B-SIT impaired	100	80.0	25	20.0	55	73.3	20	26.7
	Both impaired	26	83.9	5	16.1	16	94.1	1	5.9
	Both intact	38	95.0	2	5.0	91	90.1	10	9.9
	All	169	83.7	33	16.3	169	83.7	33	16.3
81-83	BOMC impaired	3	100.0	0	0.0	7	87.5	1	12.5
	B-SIT impaired	60	69.0	27	31.0	44	68.8	20	31.3
	Both impaired	31	77.5	9	22.5	16	72.7	6	27.3
	Both intact	17	85.0	3	15.0	44	78.6	12	21.4
	All	111	74.0	39	26.0	111	74.0	39	26.0
84-101	BOMC impaired	3	60.0	2	40.0	9	75.0	3	25.0
	B-SIT impaired	93	75.6	30	24.4	68	75.6	22	24.4
	Both impaired	27	64.3	15	35.7	10	50.0	10	50.0
	Both intact	15	83.3	3	16.7	51	77.3	15	22.7
	All	138	73.4	50	26.6	138	73.4	50	26.6

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