Table 2. BNT-30 Normative Data by Sex, Race, Age, or Education.
| Sex | N | Min | Max | M (SD) | Cut-off (-1.5 SD) | Cut-off (-2.0 SD) |
|---|---|---|---|---|---|---|
| Male | 74 | 22 | 30 | 29.1 (1.7) | 27 | 26 |
| Female | 145 | 22 | 30 | 28.4 (1.8) | 26 | 25 |
| Racea | ||||||
| White | 191 | 22 | 30 | 28.8 (1.7) | 26 | 25 |
| African American | 27 | 22 | 30 | 27.5 (2.1) | 24 | 23 |
| Age | ||||||
| 55-64 years old | 47 | 24 | 30 | 29.0 (1.3) | 27 | 26 |
| 65-74 years old | 83 | 22 | 30 | 28.8 (1.8) | 26 | 25 |
| 75-84 years old | 73 | 22 | 30 | 28.2 (2.0) | 25 | 24 |
| 85+ years old | 16 | 26 | 30 | 28.9 (1.4) | 27 | 26 |
| Education level | ||||||
| High school or less | 29 | 22 | 30 | 27.3 (2.3) | 24 | 23 |
| Some college | 40 | 22 | 30 | 28.3 (1.9) | 25 | 25 |
| College grad | 40 | 25 | 30 | 28.9 (1.5) | 27 | 26 |
| Less than grad degree | 63 | 23 | 30 | 29.0 (1.6) | 27 | 26 |
| Graduate degree | 47 | 25 | 30 | 29.1 (1.2) | 27 | 27 |
Note:
a
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.