Table 5.
Results of forward stepwise multiple regression (FSMR) with independent variables: frontal lobe gray matter (FGMLV) and white matter (FWMLV) lesion volumes, parietal lobe gray matter (PGMLV) and white matter (PWMLV) lesion volumes. The positive or negative superscript by the variable indicates whether the relationship is as expected (i.e., +larger lesion volume associated with larger initial deficits and poorer recovery) or opposite to expected (i.e., −larger lesion volume associated with smaller initial deficits and better recovery). The analyses were included in this table only if either the analysis for the primary independent variable or the final regression model was statistically significant (p < 0.05). Collinearity analyses of predictor variables indicated VIFs < 2.0 and Ts > 0.4 except for PGMLV and PWMLV (VIF=41.4, Ts < 0.03)
| Dependent Variable | Primary Independent Variable (R2, p) | FSMR Additional Independent Variable(s) (R2, R2adj, p) |
|---|---|---|
| mDB 1st att, AW | FWMLV+ (0.82, 0.001) | FGMLV−, PGMLV− (0.89, 0.85, <0.001) |
| mMAP 1st att, CR | FWMLV+ (0.65,0.001) | PWMLV+, PGMLV− (0.79, 0.72, 0.002) |
| mDB 1st succ, AW | FWMLV+ (0.46,0.004) | FGMLV− (0.56, 0.47, 0.006) |
| mMAP 1st succ, CR | FWMLV+ (0.59,0.001) | FGMLV− (0.69, 0.62, 0.005) |
| mMAP 1st succ SR | FWMLV+ (0.45,0.017) | |
| mDB Csucc AW | FWMLV+ (0.50,0.014) | FGMLV− (0.64, 0.56, 0.006) |
| mDB Csucc BW | FGMLV− (0.35,0.043) | FWMLV+ (0.51,0.40,0.040) |
| mMAP Csucc CR | FWMLV+ (0.60,0.001) | FGMLV(0.65, 0.57, 0.009) |
| mMAP Csucc SR | FWMLV+ (0.62,0.001) | FGMLV− (0.77,0.72,0.003) |
| mMAP Csucc FS | PWMLV+ (0.46, 0.051) | FWMLV+, PGMLV− (0.84, 0.78,0.003) |
| mDB Rch Idef BW | PWMLV+ (0.40,0.088) | FWMLV(0.63, 0.55, 0.007) |
| mDB Rch Idef W2 | PWMLV+ (0.26,0.075) | FWMLV+ (0.59, 0.51,0.011) |
| mDB Man Idef BW | FWMLV+(0.30,0.051) | PWMLV+(0.45, 0.34, 0.059) |
| mDB Man Idef W2 | PWMLV+ (0.36,0.113) | FWMLV+(0.59, 0.51, 0.011) |
| mMAP Man Idef CR | FWMLV+ (0.46,0.012) | PGMLV+, FGMLV− (0.62, 0.50, 0.027) |
| mDB Rch Skill BW | FWMLV+ (0.48,0.049) | PWMLV− (0.58, 0.49, 0.013) |
| mDB Rch Skill W2 | FWMLV+ (0.32,0.044) | PWMLV+ (0.46,0.36,0.045) |
Abbreviations: See Table 4.