Table 4.
Differences in hearing threshold determined by pure-tone audiometry and on mobile devices depending on the order of examinations.
| Frequency in Hz | First pure-tone audiometry | First examination on a mobile device | ||
| n | Mean difference in dB (95% CI) | n | Mean difference in dB (95% CI) | |
| 250 | 70 | 3.6 (1.3-5.8) | 69 | 1.8 (−0.2 to 3.8) |
| 500 | 70 | −0.8 (−2.6 to 1.0) | 69 | −0.4 (−2.5 to 1.6) |
| 1000 | 70 | −0.4 (−2.1 to 1.2) | 69 | −1.7 (−3.1 to −0.2) |
| 2000 | 70 | 2.6 (1.2-3.9) | 69 | 3.3 (1.9-4.7) |
| 4000 | 70 | 2.4 (0.4-4.3) | 69 | 4.1 (2.4-5.9) |
| 6000 | 70 | 4.0 (2.2-5.8) | 69 | 3.9 (1.6-6.2) |
| 8000 | 69 | 6.5 (4.2-8.8) | 64 | 7.5 (5.3-9.7) |
| Total | 489 | 2.5 (1.8-3.3) | 478 | 2.6 (1.9-3.4) |