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.

From: Optimization of utilizing the HHIE-S for hearing screening in older people: a cross-sectional study of associated factors

 

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%