TABLE 3.
Adjustment equations and Equivalent Scores of the telephone-based Verbal Fluency Battery (t-VFB).
| Measure | Adjustment equations | ||||||
| t-PVF-F | AS = RS-0.581857*(edu-13.41791) | ||||||
| t-PVF-A | AS = RS-0.546721*(edu-13.41791) | ||||||
| t-PVF-S | AS = RS-3.459879*(sqrt(edu)-3.621862) | ||||||
| t-PVF (Total) | AS = RS-11.19203*(sqrt(edu)-3.621862) | ||||||
| t-SVF-Colors | AS = RS + 0.000008*((age^3)-165449.256716)-4.337454*(log10(edu)-1.106749) + 0.549597 if M; -0.549597 if F | ||||||
| t-SVF-Animals | AS = RS + 0.000008*((age^3)-165449.256716)-14.77632*(log10(edu)-1.106749) | ||||||
| t-SVF-Fruits | AS = RS + 0.000007*((age^3)-165449.256716)-2.030476*(sqrt(edu)-3.621862) + 1.191156 if M; -1.191156 if F | ||||||
| t-SVF (Total) | AS = RS + 0.000023*((age^3)-165449.256716)-26.77201*(log10(edu)-1.106749) | ||||||
| t-AVF-A/Colors | AS = RS + 0.000765*((age^2)-2698.337313)-12.67585*(log10(edu)-1.106749) | ||||||
| t-AVF-F/Animals | AS = RS + 0.000731*((age^2)-2698.337313)-14.25557*(log10(edu)-1.106749) | ||||||
| t-AVF-S/Fruits | AS = RS + 0.00001*((age^3)-165449.256716)-10.65985*(log10(edu)-1.106749) | ||||||
| t-AVF (Total) | AS = RS + 0.002323*((age^2)-2698.337313)-37.46202*(log10(edu)-1.106749) | ||||||
| t-CSI | AS = RS + 0.000029*((age^2)-2698.337313) + 0.818169*((1/edu)-0.083184) | ||||||
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Equivalent scores
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| oTL | iTL | 0 | 1 | 2 | 3 | 4 | |
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| t-PVF-F | 6.24 | 8.92 | ≤6.24 | 6.25–10.15 | 10.16–12.33 | 12.34–14.83 | ≥14.84 |
| t-PVF-A | 5.23 | 7.04 | ≤5.23 | 5.24–7.78 | 7.79–10.49 | 10.50–13.32 | ≥13.33 |
| t-PVF-S | 5.69 | 8.06 | ≤5.69 | 5.70–9.06 | 9.07–11.75 | 11.76–14.55 | ≥14.56 |
| t-PVF (Total) | 21.18 | 26.05 | ≤21.18 | 21.19–28.18 | 28.19–35.05 | 35.06–42.77 | ≥42.78 |
| t-SVF-Colors | 9.80 | 10.91 | ≤9.80 | 9.81–11.62 | 11.63–13.81 | 13.82–15.51 | ≥15.52 |
| t-SVF-Animals | 11.25 | 14.39 | ≤11.25 | 11.26–15.40 | 15.41–18.81 | 18.82–22.69 | ≥22.70 |
| t-SVF-Fruits | 9.36 | 11.08 | ≤9.36 | 9.37–11.90 | 11.91–14.07 | 14.08–16.81 | ≥16.82 |
| t-SVF (Total) | 35.09 | 39.23 | ≤35.09 | 35.10–41.26 | 41.27–47.84 | 47.85–56.33 | ≥56.34 |
| t-AVF-A/Colors | 5.46 | 7 | ≤5.46 | 5.47–8.01 | 8.02–11.11 | 11.12–13.92 | ≥13.93 |
| t-AVF-F/Animals | 5.75 | 7.93 | ≤5.75 | 5.76–8.98 | 8.99–11.49 | 11.50–14.29 | ≥14.30 |
| t-AVF-S/Fruits | 6.47 | 8.37 | ≤6.47 | 6.48–9.43 | 9.44–11.83 | 11.84–14.37 | ≥14.38 |
| t-AVF (Total) | 19.60 | 25.91 | ≤19.60 | 19.61–29.27 | 29.28–35.66 | 35.67–42.36 | ≥42.37 |
| t-CSI | 0.48 | 0.60 | ≤0.48 | 0.49–0.66 | 0.67–0.76 | 0.77–0.86 | ≥0.87 |
PVF, Phonemic Verbal Fluency; SVF, Semantic Verbal Fluency; AVF, Alternate Verbal Fluency; CSI, Composite Shifting Index; AS, Adjusted Score; RS, Raw Score; edu, years of education; age, years of age; sqrt, square root; iTL, inner Tolerance Limit; oTL, outer Tolerance Limit. Adjustment grids and a sheet for the automated computation of ASs are provided in Supplementary Material.