Table 5.
HLM Coefficients and Standard Errors for Age Group, Attrition Group, and Complex ISD on Cognitive Tests as a Function of Time to Attrition
| Block Design | Word Recall | Trails A | Trails B | Vocabulary | |
|---|---|---|---|---|---|
| Fixed Effects | |||||
| Intercept | |||||
| Returnees | 37.00** (0.86) | 17.47** (0.31) | 37.27** (0.93) | 83.75** (2.24) | 30.47** (0.38) |
| Age Group | −1.74 (1.30) | −0.21 (0.50) | 5.37* (1.83) | 8.46 (4.09) | 0.04 (0.56) |
| Attrition (Personal) | −5.90** (1.55) | −2.73** (0.83) | 6.07 (3.51) | 22.07* (8.57) | −1.79 (0.84) |
| Attrition (Family) | −3.81* (1.32) | −1.39* (0.58) | 0.84 (1.81) | 3.87 (4.52) | −1.03 (0.71) |
| Complex ISD | −1.38** (0.23) | −0.44** (0.10) | 1.47** (0.36) | 5.79** (1.07) | −0.28 (0.12) |
| Slope | |||||
| Returnees | 0.39 (0.20) | 0.05 (0.07) | −0.40 (0.39) | 0.20 (0.71) | 0.02 (0.03) |
| Age Group | −0.15 (0.31) | −0.11 (0.11) | −0.85 (0.84) | 0.69 (1.19) | −0.01 (0.05) |
| Attrition (Personal) | −0.60 (0.53) | −0.32 (0.23) | 3.68 (2.10) | 10.68* (4.07) | −0.34 (0.17) |
| Attrition (Family) | −0.12 (0.35) | 0.11 (0.17) | 1.26 (0.61) | 1.27 (1.79) | 0.08 (0.11) |
| Complex ISD | −0.09 (0.06) | −0.07** (0.02) | 0.22 (0.17) | 0.90** (0.27) | −0.02 (0.01) |
| Random Effects | |||||
| Variances | |||||
| Level 2, Intercept | 66.26** | 9.76** | 102.25** | 499.15** | 15.23** |
| Level 2, Slope | 1.34** | 0.16** | 10.60** | 20.81** | 0.01* |
| Level 1, Residual | 15.27 | 4.83 | 65.30 | 494.18 | 2.38 |
| Deviance | 6801.86 | 6465.91 | 8186.63 | 10148.32 | 5765.83 |
| Estimated parameters | 14 | 14 | 14 | 14 | 14 |
Note. Slope and intercept coefficients for each cognitive test are reported in a t-score metric; Values in parentheses are standard errors; ISD = intraindividual standard deviation
*
p <.01
**
p <.001.