TABLE 3.

Mutual comparison of individual diagnoses (Dunn test) for S NfL, CSF NfL, CSF Aβ₄₂, CSF tTau, and CSF pTau; and significant differences between subgroups (p < 0.05).

Analyte	Diagnostic groups
S NfL	Factor	1	2	3	4	5
	(n)	32	29	22	10	14
	Median	21.8	25.9	16.6	32.3	9.6
	Different from subgroups	(5)	(3) (5)	(2) (4)	(3) (5)	(1) (2) (4)
CSF NfL	Factor	1	2	3	4	5
	(n)	15	24	13	8	16
	Median	1,020	1,583	910	2,009	563
	Different from subgroups		(5)		(5)	(2) (4)
CSF tTau	Factor	1	2	3	4	5
	(n)	18	22	14	8	14
	Median	730	369	241	338	287
	Different from subgroups	(3) (5)		(1)		(1)
CSF pTau	Factor	1	2	3	4	5
	(n)	17	23	14	8	14
	Median	158	37	30	42	36
	Different from subgroups	(2) (3) (4) (5)	(1)	(1)	(1)	(1)
CSF Aβ42	Factor	1	2	3	4	5
	(n)	18	23	14	7	14
	Median	590	1,090	1,385	1,286	1,586
	Different from subgroups	(2) (3) (4) (5)	(1)	(1)	(1)	(1)

CSF NfL, cerebrospinal fluid neurofilament light chain; S NfL, serum neurofilament light chain; CSF Aβ₄₂, cerebrospinal fluid β-amyloid peptide₄₂; CSF tTau, cerebrospinal fluid total tau protein; CSF pTau, cerebrospinal fluid phosphorylated tau protein.