. Author manuscript; available in PMC: 2021 Oct 12.

Published in final edited form as: J Alzheimers Dis. 2021;83(2):861–877. doi: 10.3233/JAD-210251

Table 8.

Joint conditional logistic regression models with odds ratios for planned model comparisons.

Model	Term	Decrement	Odds Ratios (95% CI)	p-value
1	sOBJ at baseline¹	1 z	1.35 (0.92, 1.99)	0.13
	sOBJ at 30 months¹	1 z	1.89 (1.27, 2.81)	0.002
2	sOBJ at baseline ¹	1 z	1.06 (0.66, 1.70)	0.82
	ΔOBJ-LME^1,2	0.0068 SD	1.96 (1.26, 3.03)	0.003

Note. Odds ratios represent the likelihood of progressing from cognitively unimpaired to MCI given a 1 SD lower performance for each individual method. sOBJ = subtle objective cognitive impairment (cross-sectional). ΔOBJ = subtle objective cognitive decline (longitudinal). WSD = within subjects’ standard deviation. LR = annualized change from linear regression model. LME = annualized change from linear mixed effects model.

Reverse scaling applied so that the odds ratios are greater than one.

ΔOBJ-LME was scaled by dividing by its standard deviation.