SOA Norms Report

  1. Introduction
  2. Collecting the Raw Data
    1. ARIC
    2. GMBI
    3. NACC
    4. MCSA
  3. Summarizing the Raw Data
    1. Demographics
    2. Instruments
  4. Generating the Normative Samples
    1. ARIC
    2. GMBI
    3. NACC
    4. MCSA
    5. Pooled
  5. Summarizing the Normative Data
    1. Demographics
    2. Instruments
    3. Groups by Instruments in the Pooled Sample
  6. Generating Instrument Level Models
    1. Notes on the Trail Making Tests
    2. A Note on the LDST
  7. Generating Domain Level Models
  8. Generating Algorithmic Classifications

Collecting the Raw Data

GMBI

Here are the variables we used from the GMBI study, and here is what we matched them up with in the SOA study.

GMBI Variable Name GMBI Variable Label SOA DOI
dsst_blocks90 DSST # Correct Symbols in 90 Seconds ldst
il_symbols Incidental Learning Total Symbols Recalled (Regardless of Pairing) il_letters
il_dgsymprs Incidental Learning Total Digit Symbol Pairs Recalled il_ldp
ravlt_dlarclnm RAVLT Delayed Recall of List A ravl2
ravlt_totallearn RAVLT Total Learning Over Trials 1-5 ravl1
animtotal Animal Naming Total animals
trlatmerr Trail A Time to Completion (Errors >= 5 are 360) tmta
trlbtmerr Trail B Time to Completion (Errors >= 5 are 360) tmtb
ravlt_rcgcorrtotal RAVLT Total Recognition Corrected for 'Guessing' ravl3

Notes

  • • GMBI uses the Digit Symbol Substitution Test, while SOA will use the Letter Digit Symbol Substitution Test.
  • • The Incidental Learning tests given by GMBI may not be the same as the ones given by SOA.
  • • GMBI "cuts off" the both Trails tests at 360 seconds, while SOA will cut off their Trails A Test at 240 seconds and their Trails B Test at 300 seconds.