TABLE 2.

Estimated group differences from log‐linear model of plasma pTau181 at baseline, adjusting for age

	pTau181 concentration (pg/mL)
Predictors	Estimate*	95% CI	P
Probable MCI‐LB (intercept—geometric mean)	2.02	1.79 to 2.27	<0.001
Control vs. probable MCI‐LB % difference	−22%	−37% to −4%	0.022
MCI‐AD vs. probable MCI‐LB % difference	+24%	+4% to +49%	0.016
Possible MCI‐LB vs. probable MCI‐LB % difference	+14%	−9% to +42%	0.256
Age (mean centered) % difference per year	+2%	+1% to +3%	<0.001
Observations	146

^*Exponentiated estimates, expressed as % differences.

Bold p values denote effects significant at α < 0.05.

Abbreviations: MCI, mild cognitive impairment; LB, Lewy bodies; CI, confidence interval; AD, Alzheimer's disease.