Study group / location
1 = Dementia Quito
2 = Elderly control quito
3 = Quito young control
4 = Guayquil young control
5 = Riobamaba young control
6 = Manta young control

random Split into 2 groups for Study 2 of lexical reading tasks premorbid
1 = Group 1 Development
2 = Group 2 Test
3 = Not applicable

Elderly controls from Study 1, or new controls from Study 2
1 = elderly
2 = younger
3 = n/a

Exclude if positive
0 = no
1 = exclude

Years of completed education
99 = missing

1 = Male
2 = Female

ADHD ever diagnosed
8 = not collected
99 = Missing Data

SpanLex (Spot the Word Test)-1 used in abreviated version
8 = not administered

WAT-Sentences-30
8 = n/a

WAIS IV (Spain 2012) Block Design raw score
888 = not administered

Memory Test (only elderly and dementia) item 1
0 = Incorrect
1 = Correct
8 = not administered

Exclude=0 (FILTER)
0 = Not Selected
1 = Selected

Memory Test Total Score
88 = not administered

16 item visuouspatial matrix matching with stopping rule of 3 errors
88 = na

WAT Sentences Total Score
88 = n/a

Spot (SpanLex) 36 items (2,3,4,5,6,7,8,8,10,11,12,13,14,15,16,17,18,19,20,23,24,25,26,27,30,31,32,33,35,36,37,38,39,41,42,44,45)
88 = not administered
99 = missing

(WAT_Total-23.67)/3.257
88 = not applicable

IQ with mean = 100 & SD = 15
888 = not applicable
999 = missing

IQ predicted from WAT scores (WAT_Total* 2.083) + 62.813
888 = n/a
999 = missing

Indiacates test with simulated impairment
1 = WAT
2 = SpanLex
3 = SCIRT
8 = n/a
9 = missing

IQ predicted from WAT impaired (2.083 * WAT_FOC_impaired) + 62.813
888 = not applicable or available
999 = missing data

How much each WAT scored reduced by for simulated global ('ALL') cognitive impaimemt
1 = .25 SD
2 = .5 SD
3 = 1 SD
8 = n/a