Table 1 The formulas for calculating rates of total accuracy, total inaccuracy, false positives and false negatives. HHIE-S, hearing handicap inventory for the elderly screening version.
Normal Hearing (n = 110) | Hearing loss (n = 663) | |
---|---|---|
HHIE-S ≤ 8 | 95(a) | 241(b) |
HHIE-S>8 | 15(c) | 422(d) |
Total accuracy rate | (a + d)/(a + b + c + d)×100%=66.89% | |
Total inaccuracy rate | (b + c)/(a + b + c + d)×100%=33.11% | |
False positive rate | c/(a + c)×100%=13.64% | |
False negative rate | b/(b + d)×100%=36.35% |