Table 2.

Screening accuracy of DigiBel for hearing threshold >20 dB identified by automated pure tone audiometry.

Frequency (Hz)	Sensitivity (%), 95% CI	Specificity (%), 95% CI
250	95.00 (75.13 to 99.87)	85.00 (70.16 to 94.29)
500	91.30 (71.96 to 98.93)	89.19 (74.58 to 96.97)
1000	100.00 (86.28 to 100.00)	85.71 (69.74 to 95.19)
2000	100.00 (86.77 to 100.00)	79.41 (62.10 to 91.30)
4000	100.00 (86.28 to 100.00)	88.57 (73.26 to 96.80)
8000	100.00 (86.28 to 100.00)	88.57 (73.26 to 96.80)
Screening frequencies (250, 1000, 2000, and 4000)	100.00 (87.23 to 100.00)	72.73 (54.48 to 86.70)