Table 1.
Descriptive Statistics of CLOX1 Sample
| Attributes | Complete Sample (N=445) |
Excluded Sample (n=167) |
Total Normative Sample (n=278) |
Normative Hispanic (n=106) |
Normative Non- Hispanic Whites (n=172) |
Comparison of Total Normative Sample to Excluded |
p |
|---|---|---|---|---|---|---|---|
| Age, M (SD), rg. | 61.9 (12.5), 40–96 | 67.7 (12.3), 40–96 | 58.6 (11.4), 40–93 | 52 (8.0), 40–74 | 62.7 (11.3), 40–93 | t (440)=−7.8 | <.001 |
| Education, M (SD), rg. | 10.9 | 8.9 (4.9), 0–20 | 12.2 (3.8), 0–20 | 9.3 (3.7), 0–18 | 14 (2.6), 8–20 | t (440)=7.9 | <.001 |
| Hispanics, % | 43 | 50.9 | 38 | 100 | 0 | X2 =(1, N=442), d=7.7 | <.01 |
| Females, % | 68.7 | 59.3 | 74.2 | 81.1 | 70 | X2 =(1, N=442), d=11.3 | .001 |
| MMSE, M (SD), rg. | 27.5 (2.9), 12–30 | 25.5 (3.5), 12–30 | 28.76 (1.4), 24–30 | 28.3 (1.6), 24–30 | 29 (1.2), 24–30 | t (439)=14.2 | <.001 |
| CDR, M (SD), rg. | .38 (1.0), 0–15 | .93 (1.0), 0–6 | 0 | 0 | 0 | t (440)=−15 | <.001 |
| EXIT25, M (SD), rg. | 7.1 (4.7), 0–23 | 10.5 (4.8), 2–23 | 5.2 (3.3), 0–15 | 6.1 (3.6), 1–14 | 4.6 (3.1), 0–15 | t (421)=−13.5 | <.001 |
| Trails B, M (SD), rg. | 123.04 (71.0), 33–532 | 175.5 (88.6), 59–532 | 97.1 (40.4), 33–223 | 112.7 (43.5), 36–223 | 87.8 (35.9), 33–209 | t (402)=−12.3 | <.001 |
| CLOX1, M (SD), rg. | 12.1 (2.3), 0–15 | 11.2 (2.8), 0–15 | 12.74 (1.7), 4–15 | 12.6 (1.7), 4–15 | 12.8 (1.8), 6–15 | t (436)=7.0 | <.001 |
Notes: M = mean; SD = standard deviation; rg. = range; MMSE = Mini Mental Status Exam; CDR = Clinical Dementia Rating scale; EXIT25 = Executive Interview 25-item Examination; Trails B = Trails Making Test; 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.