Table 2.
The optimal cut-off scores for SOT, BBS, and FES-I using the Youden method.
| Cut-Off Score | SOT ≤60 |
BBS ≤35 |
BBS ≤42 |
FES-I ≥27 |
FES-I ≥29 |
|---|---|---|---|---|---|
| Value | Value | Value | Value | Value | |
| 95% CI | 95% CI | 95% CI | 95% CI | 95% CI | |
| Prevalence (%) | 32/84 38.1 |
32/84 38.1 |
32/84 38.1 |
32/84 38.1 |
32/84 38.1 |
| (27.7–49.3) | (27.7–49.3) | (27.7–49.3) | (27.7–49.3) | (27.7–49.3) | |
| Sensitivity (%) | 23/32 71.9 |
14/32 43.8 |
18/32 56.3 |
26/32 81.3 |
23/32 71.9 |
| (53.3–86.3) | (26.4–62.3) | (37.7–73.6) | (63.6–92.8) | (53.3–86.3) | |
| Specificity (%) | 34/52 65.4 |
48/52 88.5 |
35/52 67.3 |
29/52 55.8 |
33/52 63.5 |
| (50.9–78.0) | (76.6–95.6) | (52.9–79.7) | (41.3–69.5) | (49.0–76.4) | |
| PPV (%) | 56.1 | 70.0 | 51.4 | 53.1 | 54.8 |
| (39.7–71.5) | (45.7–88.1) | (34.0–68.6) | (38.3–67.5) | (38.7–70.2) | |
| NPV (%) | 79.1 | 71.9 | 71.4 | 82.9 | 78.6 |
| (64.0–90.0) | (59.2–82.4) | (56.7–83.4) | (66.4–93.4) | (63.2–89.7) | |
| LR (+) | 2.1 | 3.8 | 1.7 | 1.8 | 2.0 |
| (1.34–3.2) | (1.6–8.9) | (1.1–2.8) | (1.3–2.6) | (1.3–3.0) | |
| LR (−) | 0.43 | 0.64 | 0.65 | 0.34 | 0.44 |
| (0.24–0.77) | (0.46–0.88) | (0.42–1.01) | (0.16–0.72) | (0.25–0.8) | |
| AUC | 0.686 | 0.661 | 0.618 | 0.685 | 0.677 |
| (0.58–0.79) | (0.56–0.76) | (0.51–0.73) | (0.59–0.78) | (0.57–0.58) |
Legend: SOT, Sensory Organization Test; BBS, Berg Balance Scale; FES-I, Falls Efficacy Scale–International; CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value; LR, likelihood ratio; AUC, area under receiver operating characteristic curve.