Table 3. BNT-30 Normative Data by Age and Race*.
| Age range | N | Min | Max | M (SD) | Cut-off (-1.5 SD) | Cut-off (-2.0 SD) |
|---|---|---|---|---|---|---|
| White | ||||||
| 55-64 years old | 38 | 26 | 30 | 29.2 (1.1) | 28 | 27 |
| 65-74 years old | 73 | 24 | 30 | 29.0 (1.5) | 27 | 26 |
| 75-84 years old | 66 | 22 | 30 | 28.4 (2.0) | 25 | 24 |
| 85+ years old | 14 | 26 | 30 | 28.8 (1.5) | 27 | 26 |
| African American | ||||||
| 55-64 years old | 9 | 24 | 30 | 28.1 (2.0) | 25 | 24 |
| 65-74 years old | 10 | 22 | 30 | 27.0 (2.6) | 23 | 22 |
| 75-84 years old | 7 | 26 | 29 | 27.0 (1.0) | 26 | 25 |
| 85+ years old | 1 | 30 | 30 | 30.0 (0.0) | - | - |
Note:
*
n = 218, one participant was categorized as “Other” and omitted from the racial between group analyses; cut-off scores are intended to reflect values where at least mild (-1.5 SD) or moderate (-2.0 SD) impairment is present in reference to our normative sample.