TABLE 2.
Basic descriptive statistics of the item, domain, and total scores (baseline data, n = 383)
| Domain | Item | Possible score rangea |
Minimumb | Maximumb | Mean | SD |
|---|---|---|---|---|---|---|
| IM | 40–152 | 40 (0.3%) | 152 (0.3%) | 98.10 | 16.37 | |
| LL | 0–40 | 9 | 40 (0.3%) | 26.31 | 5.27 | |
| SIM | 0–24 | 6 | 24 (1.6%) | 17.81 | 3.78 | |
| VC | 50–136 | 58 | 136 (0.3%) | 102.76 | 18.31 | |
| FC | 0–20 | 7 | 20 (35.5%) | 17.36 | 3.11 | |
| LO | 0–20 | 5 | 20 (26.9%) | 17.60 | 2.56 | |
| La | 40–137 | 78 | 134 | 97.80 | 9.70 | |
| PN | 0–10 | 8 | 10 (91.1%) | 9.91 | 0.31 | |
| SF | 0–40 | 8 | 40 (0.3%) | 19.56 | 4.91 | |
| Att | 40–154 | 56 | 150 | 102.96 | 16.25 | |
| DS | 0–16 | 3 | 16 (15.1%) | 12.08 | 2.74 | |
| Co | 0–89 | 11 | 89 (0.8%) | 42.37 | 11.39 | |
| DM | 40–137 | 48 | 130 | 98.30 | 15.67 | |
| LRL | 0–10 | 0 (5.2%) | 10 (4.4%) | 5.48 | 2.53 | |
| LRN | 0–20 | 13 | 20 (51.2%) | 19.08 | 1.27 | |
| SDR | 0–12 | 0 (0.3%) | 12 (18.0%) | 9.27 | 2.40 | |
| FR | 0–20 | 0 (0.3%) | 20 (4.7%) | 13.25 | 3.37 | |
| Total scale |
40–160 | 61 | 148 | 99.99 | 14.55 |
IM, immediate memory; VC, visuospatial/constructional; La, language; Att, attention; DM, delayed memory; LL, list learning; SIM, story immediate memory; FC, figure copy; LO, line orientation; PN, picture naming; SF, semantic fluency; DS, digit span; Co, coding; LRL, list recall; LRN, list recognition; SDR, story delayed recall; FR, figure recall.
The item scores are raw scores recorded during the test of RBANS. The domain scores are converted from the item scores using conversion tables in the RBANS manual. The total score is converted from the sum of index scores using the appropriate table in the RBANS manual. For additional details, please refer to the RBANS manual (Randolph, 1998).
A percentage of subjects that have scores reached the limit of possible score range is included in parentheses, as an indicator of possible floor or ceiling effect.