What is ADNI Dataset?

The Alzheimer’s Disease Neuroimaging Initiative (ADNI) unites researchers with study data as they work to define the progression of Alzheimer’s disease (AD). ADNI researchers collect, validate and utilize data, including MRI and PET images, genetics, cognitive tests, CSF and blood biomarkers as predictors of the disease. Study resources and data from the North American ADNI study are available through this website, including Alzheimer’s disease patients, mild cognitive impairment subjects, and elderly controls.

How to Get the ADNI Dataset?

For R users, the ADNI project has developed a data package ADNIMERGE which contains coded data, documentation, and analysis vignettes. To install the package first, we need to download the source code ADNIMERGE_0.0.1.tar.gz from LONI. In ADNI’s download section, you can find the package source as you see in the below image.

After downloading the compressed ADNIMERGE_0.0.1.tar.gz file, it can be installed on your R system by entering the following R code.

install.packages("./ADNIMERGE_0.0.1.tar.gz", repos = NULL, type = "source")

To load data, you need only call adnimerge inside ADNIMERGE package.

library(ADNIMERGE)
data(adnimerge)

A adnimerge has 15741 records and 115 fields. At ADNI, there are many fields, so it is hard to explore data at first glance. In these situations, the summarytools R package is very helpful. The function dfsummary creates a pretty data summary table.You can use below script to install package:

remotes::install_github("dcomtois/summarytools", build_vignettes = TRUE)
library(summarytools)
dfSummary(adnimerge)

Data Frame Summary

adnimerge

Dimensions: 15741 x 115
Duplicates: 0

Variable

Label

Stats / Values

Freqs (% of Valid)

Graph

Missing

RID [labelled, numeric]

Participant roster ID

Mean (sd) : 2782.6 (2166.5)

min ≤ med ≤ max:

2 ≤ 2196 ≤ 7025

IQR (CV) : 3887 (0.8)

2378 distinct values

0 (0.0%)

COLPROT [labelled, factor]

Study protocol of data collection

1. ADNI1

2. ADNIGO

3. ADNI2

4. ADNI3

5013	(	31.8%	)
804	(	5.1%	)
6945	(	44.1%	)
2979	(	18.9%	)

0 (0.0%)

ORIGPROT [labelled, factor]

Original study protocol

1. ADNI1

2. ADNIGO

3. ADNI2

4. ADNI3

7227	(	45.9%	)
1236	(	7.9%	)
5674	(	36.0%	)
1604	(	10.2%	)

0 (0.0%)

PTID [labelled, character]

Original study protocol

1. 021_S_0178

2. 027_S_0074

3. 126_S_0605

4. 127_S_0259

5. 131_S_0384

6. 002_S_0413

7. 003_S_0908

8. 021_S_0159

9. 021_S_0337

10. 023_S_0031

[ 2368 others ]

23	(	0.1%	)
23	(	0.1%	)
23	(	0.1%	)
23	(	0.1%	)
23	(	0.1%	)
22	(	0.1%	)
22	(	0.1%	)
22	(	0.1%	)
22	(	0.1%	)
22	(	0.1%	)
15516	(	98.6%	)

0 (0.0%)

SITE [labelled, factor]

Site

1. 002
2. 003
3. 005
4. 006
5. 007
6. 009
7. 010
8. 011
9. 012
10. 013
[ 57 others ]

389	(	2.5%	)
350	(	2.2%	)
210	(	1.3%	)
243	(	1.5%	)
298	(	1.9%	)
214	(	1.4%	)
101	(	0.6%	)
312	(	2.0%	)
214	(	1.4%	)
174	(	1.1%	)
13236	(	84.1%	)

0 (0.0%)

VISCODE [labelled, character]

Visit code

1. bl

2. m12

3. m06

4. m24

5. m18

6. m36

7. m30

8. m03

9. m48

10. m60

[ 25 others ]

2378	(	15.1%	)
1896	(	12.0%	)
1618	(	10.3%	)
1576	(	10.0%	)
1318	(	8.4%	)
1030	(	6.5%	)
799	(	5.1%	)
793	(	5.0%	)
719	(	4.6%	)
423	(	2.7%	)
3191	(	20.3%	)

0 (0.0%)

EXAMDATE [labelled, Date]

Date

min : 2005-09-07

med : 2012-09-06

max : 2022-01-06

range : 16y 3m 30d

3771 distinct values

0 (0.0%)

DX.bl [labelled, factor]

Baseline Dx

1. CN

2. SMC

3. EMCI

4. LMCI

5. AD

4722	(	30.1%	)
1244	(	7.9%	)
2880	(	18.3%	)
5154	(	32.8%	)
1712	(	10.9%	)

29 (0.2%)

AGE [labelled, numeric]

Age

Mean (sd) : 73.3 (7)

min ≤ med ≤ max:

50.4 ≤ 73.4 ≤ 91.4

IQR (CV) : 9.4 (0.1)

348 distinct values

8 (0.1%)

PTGENDER [labelled, character]

Sex

1. Female

2. Male

7083	(	45.0%	)
8658	(	55.0%	)

0 (0.0%)

PTEDUCAT [labelled, numeric]

Education

Mean (sd) : 16.1 (2.8)

min ≤ med ≤ max:

4 ≤ 16 ≤ 20

IQR (CV) : 4 (0.2)

16 distinct values

0 (0.0%)

PTETHCAT [labelled, factor]

Ethnicity

1. Unknown

2. Not Hisp/Latino

3. Hisp/Latino

71	(	0.5%	)
15168	(	96.4%	)
502	(	3.2%	)

0 (0.0%)

PTRACCAT [labelled, factor]

Race

1. Am Indian/Alaskan

2. Asian

3. Hawaiian/Other PI

4. Black

5. White

6. More than one

7. Unknown

27	(	0.2%	)
279	(	1.8%	)
8	(	0.1%	)
667	(	4.2%	)
14559	(	92.5%	)
172	(	1.1%	)
29	(	0.2%	)

0 (0.0%)

PTMARRY [labelled, character]

Marital

1. Divorced

2. Married

3. Never married

4. Unknown

5. Widowed

1339	(	8.5%	)
12031	(	76.4%	)
510	(	3.2%	)
55	(	0.3%	)
1806	(	11.5%	)

0 (0.0%)

APOE4 [labelled, numeric]

Number of APOEe4 alleles

Mean (sd) : 0.5 (0.6)

min ≤ med ≤ max:

0 ≤ 0 ≤ 2

IQR (CV) : 1 (1.3)

0	:	8802	(	56.7%	)
1	:	5392	(	34.7%	)
2	:	1330	(	8.6%	)

217 (1.4%)

FDG [labelled, numeric]

Average FDG-PET of angular, temporal, and posterior cingulate

Mean (sd) : 1.2 (0.2)

min ≤ med ≤ max:

0.6 ≤ 1.2 ≤ 1.8

IQR (CV) : 0.2 (0.1)

3599 distinct values

12136 (77.1%)

PIB [labelled, numeric]

Average PIB SUVR of frontal cortex, anterior cingulate, precuneus cortex, and parietal cortex

Mean (sd) : 1.8 (0.4)

min ≤ med ≤ max:

1.1 ≤ 1.9 ≤ 2.9

IQR (CV) : 0.8 (0.2)

186 distinct values

15518 (98.6%)

AV45 [labelled, numeric]

AV45 ratio (cortical grey matter/whole cerebellum) Summary florbetapir cortical SUVR normalized by whole cerebellum. See Jagust lab PDF on LONI for details and cutoff info

Mean (sd) : 1.2 (0.2)

min ≤ med ≤ max:

0.8 ≤ 1.1 ≤ 2.7

IQR (CV) : 0.4 (0.2)

2378 distinct values

12747 (81.0%)

FBB [labelled, numeric]

FBB ratio (cortical grey matter/whole cerebellum) Summary florbetaben cortical SUVR normalized by whole cerebellum. See Jagust lab PDF on LONI for details and cutoff info

Mean (sd) : 1.2 (0.2)

min ≤ med ≤ max:

0.9 ≤ 1.1 ≤ 2

IQR (CV) : 0.4 (0.2)

416 distinct values

15299 (97.2%)

ABETA [labelled, character]

CSF ABETA

1. >1700
2. 1139
3. 1275
4. 1044
5. 1213
6. 1244
7. 1338
8. 1646
9. 1689
10. 1033
[ 1707 others ]

351	(	14.8%	)
5	(	0.2%	)
5	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
3	(	0.1%	)
1984	(	83.6%	)

13369 (84.9%)

TAU [labelled, character]

CSF TAU

1. <80
2. 213.9
3. 161.1
4. 173.1
5. 176.3
6. 178.9
7. 196.8
8. 207.2
9. 210.8
10. 215.2
[ 1772 others ]

8	(	0.3%	)
5	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
2327	(	98.1%	)

13369 (84.9%)

PTAU [labelled, character]

CSF PTAU

1. <8
2. 18.85
3. 20.87
4. 21.19
5. 21.4
6. 26.82
7. 12.16
8. 14.99
9. 15.13
10. 15.18
[ 1774 others ]

11	(	0.5%	)
6	(	0.3%	)
5	(	0.2%	)
5	(	0.2%	)
5	(	0.2%	)
5	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
4	(	0.2%	)
2319	(	97.8%	)

13369 (84.9%)

CDRSB [labelled, numeric]

CDR-SB

Mean (sd) : 2.1 (2.9)

min ≤ med ≤ max:

0 ≤ 1 ≤ 18

IQR (CV) : 3 (1.4)

31 distinct values

4473 (28.4%)

ADAS11 [labelled, numeric]

ADAS 11

Mean (sd) : 10.9 (8.4)

min ≤ med ≤ max:

0 ≤ 8.7 ≤ 70

IQR (CV) : 9 (0.8)

166 distinct values

4742 (30.1%)

ADAS13 [labelled, numeric]

ADAS 13 (including Delayed Word Recall and Number Cancellation)

Mean (sd) : 16.8 (11.5)

min ≤ med ≤ max:

0 ≤ 14 ≤ 85

IQR (CV) : 14.7 (0.7)

206 distinct values

4840 (30.7%)

ADASQ4 [labelled, numeric]

ADAS Delayed Word Recall

Mean (sd) : 5.1 (3.1)

min ≤ med ≤ max:

0 ≤ 5 ≤ 10

IQR (CV) : 6 (0.6)

11 distinct values

4712 (29.9%)

MMSE [labelled, numeric]

MMSE

Mean (sd) : 26.8 (3.9)

min ≤ med ≤ max:

0 ≤ 28 ≤ 30

IQR (CV) : 4 (0.1)

31 distinct values

4702 (29.9%)

RAVLT.immediate [labelled, numeric]

RAVLT Immediate (sum of 5 trials)

Mean (sd) : 35.5 (13.8)

min ≤ med ≤ max:

0 ≤ 34 ≤ 75

IQR (CV) : 20 (0.4)

76 distinct values

4824 (30.6%)

RAVLT.learning [labelled, numeric]

RAVLT Learning (trial 5 - trial 1)

Mean (sd) : 4.2 (2.8)

min ≤ med ≤ max:

-8 ≤ 4 ≤ 14

IQR (CV) : 4 (0.7)

21 distinct values

4823 (30.6%)

RAVLT.forgetting [labelled, numeric]

RAVLT Forgetting (trial 5 - delayed)

Mean (sd) : 4.2 (2.7)

min ≤ med ≤ max:

-35 ≤ 4 ≤ 15

IQR (CV) : 3 (0.6)

32 distinct values

4855 (30.8%)

RAVLT.perc.forgetting [labelled, numeric]

RAVLT Percent Forgetting

Mean (sd) : 57.2 (43.7)

min ≤ med ≤ max:

-1650 ≤ 57.1 ≤ 100

IQR (CV) : 72.7 (0.8)

110 distinct values

4928 (31.3%)

LDELTOTAL [labelled, numeric]

Logical Memory - Delayed Recall

Mean (sd) : 8.7 (6.2)

min ≤ med ≤ max:

0 ≤ 9 ≤ 25

IQR (CV) : 11 (0.7)

26 distinct values

6731 (42.8%)

DIGITSCOR [labelled, numeric]

Digit Symbol Substitution

Mean (sd) : 37.4 (14.4)

min ≤ med ≤ max:

0 ≤ 38 ≤ 83

IQR (CV) : 18 (0.4)

81 distinct values

11941 (75.9%)

TRABSCOR [labelled, numeric]

Trails B

Mean (sd) : 117.2 (76.8)

min ≤ med ≤ max:

0 ≤ 89 ≤ 996

IQR (CV) : 75 (0.7)

291 distinct values

5148 (32.7%)

FAQ [labelled, numeric]

FAQ

Mean (sd) : 5.2 (7.8)

min ≤ med ≤ max:

0 ≤ 1 ≤ 30

IQR (CV) : 8 (1.5)

31 distinct values

4472 (28.4%)

MOCA [labelled, numeric]

MOCA

Mean (sd) : 23.3 (4.7)

min ≤ med ≤ max:

0 ≤ 24 ≤ 30

IQR (CV) : 6 (0.2)

31 distinct values

8728 (55.4%)

EcogPtMem [labelled, numeric]

Pt ECog - Mem

Mean (sd) : 2.1 (0.7)

min ≤ med ≤ max:

1 ≤ 1.9 ≤ 4

IQR (CV) : 1 (0.4)

60 distinct values

8441 (53.6%)

EcogPtLang [labelled, numeric]

Pt ECog - Lang

Mean (sd) : 1.7 (0.6)

min ≤ med ≤ max:

1 ≤ 1.6 ≤ 4

IQR (CV) : 0.9 (0.4)

72 distinct values

8457 (53.7%)

EcogPtVisspat [labelled, numeric]

Pt ECog - Vis/Spat

Mean (sd) : 1.4 (0.6)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.6 (0.4)

54 distinct values

8526 (54.2%)

EcogPtPlan [labelled, numeric]

Pt ECog - Plan

Mean (sd) : 1.4 (0.6)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.6 (0.4)

30 distinct values

8472 (53.8%)

EcogPtOrgan [labelled, numeric]

Pt ECog - Organ

Mean (sd) : 1.5 (0.6)

min ≤ med ≤ max:

1 ≤ 1.3 ≤ 4

IQR (CV) : 0.8 (0.4)

37 distinct values

8605 (54.7%)

EcogPtDivatt [labelled, numeric]

Pt ECog - Div atten

Mean (sd) : 1.8 (0.8)

min ≤ med ≤ max:

1 ≤ 1.8 ≤ 4

IQR (CV) : 1 (0.4)

19 distinct values

8509 (54.1%)

EcogPtTotal [labelled, numeric]

Pt ECog - Total

Mean (sd) : 1.7 (0.6)

min ≤ med ≤ max:

1 ≤ 1.5 ≤ 4

IQR (CV) : 0.7 (0.3)

610 distinct values

8450 (53.7%)

EcogSPMem [labelled, numeric]

SP ECog - Mem

Mean (sd) : 2.1 (1)

min ≤ med ≤ max:

1 ≤ 1.8 ≤ 4

IQR (CV) : 1.6 (0.5)

60 distinct values

8394 (53.3%)

EcogSPLang [labelled, numeric]

SP ECog - Lang

Mean (sd) : 1.7 (0.8)

min ≤ med ≤ max:

1 ≤ 1.3 ≤ 4

IQR (CV) : 1.1 (0.5)

78 distinct values

8388 (53.3%)

EcogSPVisspat [labelled, numeric]

SP ECog - Vis/Spat

Mean (sd) : 1.6 (0.8)

min ≤ med ≤ max:

1 ≤ 1.1 ≤ 4

IQR (CV) : 0.9 (0.5)

55 distinct values

8556 (54.4%)

EcogSPPlan [labelled, numeric]

SP ECog - Plan

Mean (sd) : 1.7 (0.9)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 1 (0.5)

31 distinct values

8476 (53.8%)

EcogSPOrgan [labelled, numeric]

SP ECog - Organ

Mean (sd) : 1.8 (1)

min ≤ med ≤ max:

1 ≤ 1.3 ≤ 4

IQR (CV) : 1.2 (0.6)

37 distinct values

8705 (55.3%)

EcogSPDivatt [labelled, numeric]

SP ECog - Div atten

Mean (sd) : 2 (1)

min ≤ med ≤ max:

1 ≤ 1.8 ≤ 4

IQR (CV) : 1.8 (0.5)

19 distinct values

8585 (54.5%)

EcogSPTotal [labelled, numeric]

SP ECog - Total

Mean (sd) : 1.8 (0.9)

min ≤ med ≤ max:

1 ≤ 1.4 ≤ 4

IQR (CV) : 1.2 (0.5)

827 distinct values

8396 (53.3%)

FLDSTRENG [labelled, character]

MRI Field Strength

1. 1.5 Tesla MRI

2. 3 Tesla MRI

3893	(	65.6%	)
2037	(	34.4%	)

9811 (62.3%)

FSVERSION [labelled, character]

FreeSurfer Software Version

1. Cross-Sectional FreeSurfe

2. Cross-Sectional FreeSurfe

3. Cross-Sectional FreeSurfe

4276	(	44.1%	)
1488	(	15.3%	)
3942	(	40.6%	)

6035 (38.3%)

IMAGEUID [labelled, integer]

LONI Image ID

Mean (sd) : 389595.4 (356821.2)

min ≤ med ≤ max:

31863 ≤ 297274 ≤ 1501111

IQR (CV) : 301933.2 (0.9)

9706 distinct values

6035 (38.3%)

Ventricles [labelled, numeric]

UCSF Ventricles

Mean (sd) : 41907.2 (23012.1)

min ≤ med ≤ max:

5650 ≤ 37092.5 ≤ 162729

IQR (CV) : 28179.2 (0.5)

8704 distinct values

6625 (42.1%)

Hippocampus [labelled, numeric]

UCSF Hippocampus

Mean (sd) : 6762.5 (1230.9)

min ≤ med ≤ max:

2219 ≤ 6863 ≤ 11207

IQR (CV) : 1706.2 (0.2)

4967 distinct values

7275 (46.2%)

WholeBrain [labelled, numeric]

UCSF WholeBrain

Mean (sd) : 1015190 (111322.1)

min ≤ med ≤ max:

521286.6 ≤ 1012846 ≤ 1486036

IQR (CV) : 151314.5 (0.1)

9344 distinct values

6371 (40.5%)

Entorhinal [labelled, integer]

UCSF Entorhinal

Mean (sd) : 3538.2 (844.9)

min ≤ med ≤ max:

976 ≤ 3580 ≤ 7062

IQR (CV) : 1131.2 (0.2)

3116 distinct values

7685 (48.8%)

Fusiform [labelled, integer]

UCSF Fusiform

Mean (sd) : 17341.8 (2796.1)

min ≤ med ≤ max:

7739 ≤ 17341 ≤ 29950

IQR (CV) : 3695.5 (0.2)

5532 distinct values

7685 (48.8%)

MidTemp [labelled, integer]

UCSF Med Temp

Mean (sd) : 19418.2 (3120.7)

min ≤ med ≤ max:

8044 ≤ 19424.5 ≤ 32324

IQR (CV) : 4148 (0.2)

5765 distinct values

7685 (48.8%)

ICV [labelled, numeric]

UCSF ICV

Mean (sd) : 1523949 (170633.6)

min ≤ med ≤ max:

708913.2 ≤ 1512696 ≤ 3500154

IQR (CV) : 222145.2 (0.1)

9693 distinct values

6040 (38.4%)

DX [labelled, factor]

Diagnosis

1. CN

2. MCI

3. Dementia

3800	(	34.6%	)
4802	(	43.7%	)
2393	(	21.8%	)

4746 (30.2%)

mPACCdigit [labelled, numeric]

ADNI modified Preclinical Alzheimer's Cognitive Composite (PACC) with Digit Symbol Substitution

Mean (sd) : -5.9 (8)

min ≤ med ≤ max:

-58.9 ≤ -3.9 ≤ 7.8

IQR (CV) : 10.8 (-1.4)

4765 distinct values

4705 (29.9%)

mPACCtrailsB [labelled, numeric]

ADNI modified Preclinical Alzheimer's Cognitive Composite (PACC) with Trails B

Mean (sd) : -5.5 (7.7)

min ≤ med ≤ max:

-58.9 ≤ -3.5 ≤ 12.5

IQR (CV) : 10.1 (-1.4)

9492 distinct values

4699 (29.9%)

EXAMDATE.bl [labelled, Date]

Date

min : 2005-09-07

med : 2010-12-20

max : 2022-01-05

range : 16y 3m 29d

1298 distinct values

0 (0.0%)

CDRSB.bl [labelled, numeric]

CDR-SB

Mean (sd) : 1.2 (1.5)

min ≤ med ≤ max:

0 ≤ 1 ≤ 10

IQR (CV) : 2 (1.2)

18 distinct values

0 (0.0%)

ADAS11.bl [labelled, numeric]

ADAS 11

Mean (sd) : 9.3 (5.8)

min ≤ med ≤ max:

0 ≤ 8 ≤ 42.7

IQR (CV) : 7 (0.6)

106 distinct values

35 (0.2%)

ADAS13.bl [labelled, numeric]

ADAS 13 (including Delayed Word Recall and Number Cancellation)

Mean (sd) : 14.7 (8.6)

min ≤ med ≤ max:

0 ≤ 13 ≤ 54.7

IQR (CV) : 11.7 (0.6)

144 distinct values

105 (0.7%)

ADASQ4.bl [labelled, numeric]

ADAS Delayed Word Recall

Mean (sd) : 4.7 (2.8)

min ≤ med ≤ max:

0 ≤ 4 ≤ 10

IQR (CV) : 5 (0.6)

11 distinct values

7 (0.0%)

MMSE.bl [labelled, numeric]

MMSE

Mean (sd) : 27.7 (2.4)

min ≤ med ≤ max:

16 ≤ 28 ≤ 30

IQR (CV) : 4 (0.1)

15 distinct values

1 (0.0%)

RAVLT.immediate.bl [labelled, numeric]

RAVLT Immediate (sum of 5 trials)

Mean (sd) : 37.6 (12.2)

min ≤ med ≤ max:

0 ≤ 37 ≤ 71

IQR (CV) : 18 (0.3)

69 distinct values

41 (0.3%)

RAVLT.learning.bl [labelled, numeric]

RAVLT Learning (trial 5 - trial 1)

Mean (sd) : 4.6 (2.7)

min ≤ med ≤ max:

-8 ≤ 4 ≤ 12

IQR (CV) : 4 (0.6)

18 distinct values

41 (0.3%)

RAVLT.forgetting.bl [labelled, numeric]

RAVLT Forgetting (trial 5 - delayed)

Mean (sd) : 4.2 (2.6)

min ≤ med ≤ max:

-28 ≤ 4 ≤ 15

IQR (CV) : 3 (0.6)

25 distinct values

42 (0.3%)

RAVLT.perc.forgetting.bl [labelled, numeric]

RAVLT Percent Forgetting

Mean (sd) : 52.9 (35.1)

min ≤ med ≤ max:

-400 ≤ 50 ≤ 100

IQR (CV) : 60.7 (0.7)

87 distinct values

64 (0.4%)

LDELTOTAL.bl [labelled, numeric]

Logical Memory - Delayed Recall

Mean (sd) : 8.2 (5.3)

min ≤ med ≤ max:

0 ≤ 8 ≤ 23

IQR (CV) : 8 (0.6)

24 distinct values

5 (0.0%)

DIGITSCOR.bl [labelled, numeric]

Digit Symbol Substitution

Mean (sd) : 40.3 (12.4)

min ≤ med ≤ max:

0 ≤ 41 ≤ 80

IQR (CV) : 15 (0.3)

68 distinct values

8531 (54.2%)

TRABSCOR.bl [labelled, numeric]

Trails B

Mean (sd) : 108.1 (66.3)

min ≤ med ≤ max:

0 ≤ 85.5 ≤ 300

IQR (CV) : 57 (0.6)

244 distinct values

265 (1.7%)

FAQ.bl [labelled, numeric]

FAQ

Mean (sd) : 3 (5.3)

min ≤ med ≤ max:

0 ≤ 0 ≤ 30

IQR (CV) : 4 (1.7)

31 distinct values

87 (0.6%)

mPACCdigit.bl [labelled, numeric]

ADNI modified Preclinical Alzheimer's Cognitive Composite (PACC) with Digit Symbol Substitution

Mean (sd) : -4.6 (5.7)

min ≤ med ≤ max:

-23.6 ≤ -3.5 ≤ 6.3

IQR (CV) : 8.3 (-1.2)

1415 distinct values

3 (0.0%)

mPACCtrailsB.bl [labelled, numeric]

ADNI modified Preclinical Alzheimer's Cognitive Composite (PACC) with Trails B

Mean (sd) : -4.4 (5.4)

min ≤ med ≤ max:

-23.6 ≤ -3.2 ≤ 7.4

IQR (CV) : 7.9 (-1.2)

2258 distinct values

3 (0.0%)

FLDSTRENG.bl [labelled, character]

MRI Field Strength

1. 1.5 Tesla MRI

2. 3 Tesla MRI

7218	(	59.9%	)
4830	(	40.1%	)

3693 (23.5%)

FSVERSION.bl [labelled, character]

FreeSurfer Software Version

1. Cross-Sectional FreeSurfe

2. Cross-Sectional FreeSurfe

3. Cross-Sectional FreeSurfe

6843	(	44.3%	)
1402	(	9.1%	)
7218	(	46.7%	)

278 (1.8%)

IMAGEUID.bl [labelled, integer]

LONI Image ID

Mean (sd) : 258116.6 (272605.6)

min ≤ med ≤ max:

32003 ≤ 223240 ≤ 1495816

IQR (CV) : 231683 (1.1)

2255 distinct values

278 (1.8%)

Ventricles.bl [labelled, numeric]

UCSF Ventricles

Mean (sd) : 38141.3 (21478.8)

min ≤ med ≤ max:

5650 ≤ 33122 ≤ 157712.8

IQR (CV) : 25934 (0.6)

2170 distinct values

758 (4.8%)

Hippocampus.bl [labelled, numeric]

UCSF Hippocampus

Mean (sd) : 6970 (1155.5)

min ≤ med ≤ max:

2991 ≤ 7076 ≤ 10769

IQR (CV) : 1569 (0.2)

1757 distinct values

2126 (13.5%)

WholeBrain.bl [labelled, numeric]

UCSF WholeBrain

Mean (sd) : 1029916 (109355.9)

min ≤ med ≤ max:

521286.6 ≤ 1028060 ≤ 1486036

IQR (CV) : 149586.2 (0.1)

2216 distinct values

473 (3.0%)

Entorhinal.bl [labelled, integer]

UCSF Entorhinal

Mean (sd) : 3627.7 (780.9)

min ≤ med ≤ max:

1106 ≤ 3650 ≤ 6265

IQR (CV) : 1032 (0.2)

1452 distinct values

2282 (14.5%)

Fusiform.bl [labelled, integer]

UCSF Fusiform

Mean (sd) : 17642.1 (2660.4)

min ≤ med ≤ max:

8991 ≤ 17578 ≤ 29950

IQR (CV) : 3530 (0.2)

1795 distinct values

2282 (14.5%)

MidTemp.bl [labelled, integer]

UCSF Med Temp

Mean (sd) : 19897.2 (2980.4)

min ≤ med ≤ max:

9375 ≤ 19841 ≤ 32324

IQR (CV) : 3898 (0.1)

1812 distinct values

2282 (14.5%)

ICV.bl [labelled, numeric]

UCSF ICV

Mean (sd) : 1528588 (166951.9)

min ≤ med ≤ max:

882241.6 ≤ 1515918 ≤ 3315208

IQR (CV) : 221441.9 (0.1)

2254 distinct values

279 (1.8%)

MOCA.bl [labelled, numeric]

MOCA

Mean (sd) : 23.8 (3.9)

min ≤ med ≤ max:

4 ≤ 24 ≤ 30

IQR (CV) : 5 (0.2)

26 distinct values

7368 (46.8%)

EcogPtMem.bl [labelled, numeric]

Pt ECog - Mem

Mean (sd) : 2.1 (0.7)

min ≤ med ≤ max:

1 ≤ 2 ≤ 4

IQR (CV) : 1 (0.3)

45 distinct values

7264 (46.1%)

EcogPtLang.bl [labelled, numeric]

Pt ECog - Lang

Mean (sd) : 1.7 (0.6)

min ≤ med ≤ max:

1 ≤ 1.6 ≤ 4

IQR (CV) : 0.9 (0.4)

53 distinct values

7270 (46.2%)

EcogPtVisspat.bl [labelled, numeric]

Pt ECog - Vis/Spat

Mean (sd) : 1.4 (0.5)

min ≤ med ≤ max:

1 ≤ 1.1 ≤ 4

IQR (CV) : 0.5 (0.4)

46 distinct values

7298 (46.4%)

EcogPtPlan.bl [labelled, numeric]

Pt ECog - Plan

Mean (sd) : 1.4 (0.5)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.6 (0.4)

22 distinct values

7263 (46.1%)

EcogPtOrgan.bl [labelled, numeric]

Pt ECog - Organ

Mean (sd) : 1.5 (0.6)

min ≤ med ≤ max:

1 ≤ 1.3 ≤ 4

IQR (CV) : 0.7 (0.4)

35 distinct values

7436 (47.2%)

EcogPtDivatt.bl [labelled, numeric]

Pt ECog - Div atten

Mean (sd) : 1.8 (0.7)

min ≤ med ≤ max:

1 ≤ 1.8 ≤ 4

IQR (CV) : 1 (0.4)

16 distinct values

7315 (46.5%)

EcogPtTotal.bl [labelled, numeric]

Pt ECog - Total

Mean (sd) : 1.7 (0.5)

min ≤ med ≤ max:

1 ≤ 1.5 ≤ 3.9

IQR (CV) : 0.6 (0.3)

307 distinct values

7262 (46.1%)

EcogSPMem.bl [labelled, numeric]

SP ECog - Mem

Mean (sd) : 2 (0.9)

min ≤ med ≤ max:

1 ≤ 1.6 ≤ 4

IQR (CV) : 1.2 (0.5)

49 distinct values

7301 (46.4%)

EcogSPLang.bl [labelled, numeric]

SP ECog - Lang

Mean (sd) : 1.5 (0.7)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.8 (0.4)

60 distinct values

7292 (46.3%)

EcogSPVisspat.bl [labelled, numeric]

SP ECog - Vis/Spat

Mean (sd) : 1.4 (0.6)

min ≤ med ≤ max:

1 ≤ 1 ≤ 4

IQR (CV) : 0.4 (0.5)

51 distinct values

7413 (47.1%)

EcogSPPlan.bl [labelled, numeric]

SP ECog - Plan

Mean (sd) : 1.5 (0.7)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.8 (0.5)

30 distinct values

7352 (46.7%)

EcogSPOrgan.bl [labelled, numeric]

SP ECog - Organ

Mean (sd) : 1.6 (0.8)

min ≤ med ≤ max:

1 ≤ 1.2 ≤ 4

IQR (CV) : 0.8 (0.5)

37 distinct values

7675 (48.8%)

EcogSPDivatt.bl [labelled, numeric]

SP ECog - Div atten

Mean (sd) : 1.8 (0.9)

min ≤ med ≤ max:

1 ≤ 1.5 ≤ 4

IQR (CV) : 1.2 (0.5)

19 distinct values

7465 (47.4%)

EcogSPTotal.bl [labelled, numeric]

SP ECog - Total

Mean (sd) : 1.6 (0.7)

min ≤ med ≤ max:

1 ≤ 1.3 ≤ 3.9

IQR (CV) : 0.8 (0.4)

421 distinct values

7301 (46.4%)

ABETA.bl [labelled, character]

CSF ABETA

1. >1700
2. 1605
3. 1006
4. 1314
5. 600.2
6. 657.6
7. 1685
8. 1689
9. 536.8
10. 723.1
[ 939 others ]

1819	(	18.4%	)
32	(	0.3%	)
29	(	0.3%	)
27	(	0.3%	)
27	(	0.3%	)
27	(	0.3%	)
26	(	0.3%	)
26	(	0.3%	)
26	(	0.3%	)
26	(	0.3%	)
7812	(	79.1%	)

5864 (37.3%)

TAU.bl [labelled, character]

CSF TAU

1. 107.3
2. 176.3
3. 218.7
4. 266.8
5. 210.8
6. 211.8
7. 228.6
8. 261.3
9. 234
10. 257.8
[ 1026 others ]

44	(	0.4%	)
41	(	0.4%	)
36	(	0.4%	)
36	(	0.4%	)
33	(	0.3%	)
33	(	0.3%	)
33	(	0.3%	)
33	(	0.3%	)
31	(	0.3%	)
31	(	0.3%	)
9526	(	96.4%	)

5864 (37.3%)

PTAU.bl [labelled, character]

CSF PTAU

1. 18.85
2. 21.4
3. 27.12
4. 21.45
5. 17.63
6. 21.19
7. 27.56
8. 15.07
9. 16.77
10. 26.3
[ 1037 others ]

47	(	0.5%	)
43	(	0.4%	)
36	(	0.4%	)
35	(	0.4%	)
34	(	0.3%	)
33	(	0.3%	)
33	(	0.3%	)
32	(	0.3%	)
32	(	0.3%	)
32	(	0.3%	)
9520	(	96.4%	)

5864 (37.3%)

FDG.bl [labelled, numeric]

Average FDG-PET of angular, temporal, and posterior cingulate

Mean (sd) : 1.3 (0.1)

min ≤ med ≤ max:

0.7 ≤ 1.3 ≤ 1.7

IQR (CV) : 0.2 (0.1)

1484 distinct values

4896 (31.1%)

PIB.bl [labelled, numeric]

Average PIB SUVR of frontal cortex, anterior cingulate, precuneus cortex, and parietal cortex

Mean (sd) : 1.6 (0.3)

min ≤ med ≤ max:

1.2 ≤ 1.5 ≤ 2.3

IQR (CV) : 0.5 (0.2)

20 distinct values

15588 (99.0%)

AV45.bl [labelled, numeric]

AV45 ratio (cortical grey matter/whole cerebellum) Summary florbetapir cortical SUVR normalized by whole cerebellum. See Jagust lab PDF on LONI for details and cutoff info

Mean (sd) : 1.2 (0.2)

min ≤ med ≤ max:

0.8 ≤ 1.1 ≤ 2

IQR (CV) : 0.3 (0.2)

1025 distinct values

8290 (52.7%)

FBB.bl [labelled, numeric]

FBB ratio (cortical grey matter/whole cerebellum) Summary florbetaben cortical SUVR normalized by whole cerebellum. See Jagust lab PDF on LONI for details and cutoff info

Mean (sd) : 1.2 (0.2)

min ≤ med ≤ max:

0.9 ≤ 1 ≤ 1.9

IQR (CV) : 0.3 (0.2)

299 distinct values

14866 (94.4%)

Years.bl [numeric]

Mean (sd) : 2.6 (2.8)

min ≤ med ≤ max:

0 ≤ 1.6 ≤ 16.1

IQR (CV) : 3.5 (1.1)

2677 distinct values

0 (0.0%)

Month.bl [numeric]

Mean (sd) : 31.2 (33.4)

min ≤ med ≤ max:

0 ≤ 18.8 ≤ 192.5

IQR (CV) : 41.5 (1.1)

2677 distinct values

0 (0.0%)

Month [labelled, factor]

Months since baseline

1. 0
2. 3
3. 6
4. 12
5. 18
6. 24
7. 30
8. 36
9. 42
10. 48
[ 91 others ]

2378	(	15.1%	)
796	(	5.1%	)
1613	(	10.2%	)
1884	(	12.0%	)
1325	(	8.4%	)
1550	(	9.8%	)
817	(	5.2%	)
999	(	6.3%	)
357	(	2.3%	)
683	(	4.3%	)
3339	(	21.2%	)

0 (0.0%)

M [labelled, numeric]

Month since baseline

Mean (sd) : 31 (33.3)

min ≤ med ≤ max:

0 ≤ 18 ≤ 192

IQR (CV) : 42 (1.1)

34 distinct values

0 (0.0%)

Generated by summarytools 1.0.0 (R version 4.1.2)
2022-02-27