Table 2.
Descriptive Statistics of CLOX2 Sample
| Attributes | Complete Sample (N=445) |
Excluded Sample (n=177) |
Total Normative Sample (n=168) |
Normative Sample, Hispanics (n=106) |
Normative Sample, Non-Hispanic Whites (n=162) |
Comparative Analyses of Normative to Excluded |
p |
|---|---|---|---|---|---|---|---|
| Age, M (SD), rg. | 61.9 (12.5), 40–96 | 67.1 (12.3), 40–96 | 58.5 (11.2), 40–93 | 52.9 (8.9), 40–79 | 62.3 (11.5), 40–93 | t (439)=−7.3 | <.001 |
| Education, M (SD), rg. | 10.9 (4.5), 0–20 | 9.35 (4.8), 0–20 | 12.1 (4.1), 0–20 | 8.9 (3.8), 0–18 | 14.1 (2.6), 8–20 | t (439)=6.5 | <.001 |
| Hispanics, % | 43 | 83 | 38.6 | 100 | 0 | X2 = (1, N=441), d = 2.7 | .098 |
| Females, % | 68.7 | 60.6 | 73.2 | 80.2 | 69.8 | X2 = (1, N=441), d = 8.9 | <.01 |
| MMSE, M (SD), rg. | 27.5, (2.9), 12–30 | 25.6, (3.5), 12–30 | 28.9 (1.4), 24–30 | 28.3 (1.6), 24–30 | 29.1 (1.2), 24–30 | t (439)=13.5 | <.001 |
| CDR, M (SD), rg. | .38, (1.0), 0–15 | .89, (1.0), 0–6 | 0 | 0 | 0 | t (439)=−14.1 | <.001 |
| RBANS LO, M (SD), rg. | 15.2, (3.9), 0–20 | 13.5, (4.8), 0–20 | 16.6 (2.7), 10–20 | 15.3 (2.9), 10–20 | 17 (2.6), 10–20 | t (435)=7.8 | <.001 |
| RBANS FC, M (SD), rg. | 14.0, (3.6), 0–20 | 12.4, (3.9), 0–20 | 15.2 (2.9), 9–20 | 14.6 (2.8), 9–20 | 15.5 (2.9), 9–20 | t (437)=8.5 | <.001 |
| CLOX2, M (SD), rg. | 13.51, (1.7), 0–15 | 12.9, (2.2), 0–15 | 13.95 (1.1), 10–15 | 13.6 (1.2), 11–15 | 14.1 (1.1), 10–15 | t (437)=6.4 | <.001 |
Notes: M = mean; SD = standard deviation; rg. = range; MMSE = Mini Mental Status Exam; CDR = Clinical Dementia Rating scale; RBANS = Repeatable Battery for the Assessment of Neuropsychological Status; LO = Line Orientation; FC = Figure Copy; CLOX = Executive Clock Drawing Test. X2chi-square;d = Cohen’s d. p-values obtained for comparison of those excluded and the normative sample using t-test or chi-square analysis.