Table 1.
The mean difference m in the hearing threshold value between the series calculated on the basis of n data points collected on a group of N subjects, its standard deviation σ, Pearson’s correlation coefficient r and linear estimators a, b of Deming’s regression y=ax+b and corresponding confidence intervals CI at P=.05.
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f | n | m | σ | r (CI) | a (CI) | b (CI) |
| Series 1 vs 2, N=51 |
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250Hz | 100 | −3.70 | 7.30 | .88 (0.82, 0.92) | 1.08 (1.06, 1.09) | −5.49 (−5.84, −5.13) |
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500Hz | 101 | 0.52 | 7.20 | .88 (0.83, 0.92) | 0.93 (0.92, 0.94) | 2.09 (1.83, 2.34) |
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1kHz | 101 | −4.59 | 6.91 | .92 (0.88, 0.94) | 0.85 (0.84, 0.86) | −1.16 (−1.39, −0.92) |
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2kHz | 101 | −2.42 | 7.22 | .93 (0.90, 0.95) | 0.95 (0.94, 0.96) | −1.18 (−1.44, −0.91) |
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4kHz | 100 | 2.15 | 7.68 | .93 (0.90, 0.95) | 0.97 (0.96, 0.98) | 2.88 (2.64, 3.12) |
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8kHz | 100 | −1.20 | 8.88 | .91 (0.86, 0.94) | 0.93 (0.92, 0.93) | 0.71 (0.47, 0.95) |
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Total | 603 | −1.54 | 7.88 | .90 (0.89, 0.92) | 0.96 (0.96, 0.96) | −0.52 (−0.57, −0.48) |
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Mean | 99 | −1.52 | 5.42 | .94 (0.91, 0.96) | 0.94 (0.93, 0.96) | −0.23 (−0.46, −0.01) |
| Series 1 vs 3, N=37 |
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250Hz | 71 | −5.07 | 12.03 | .69 (0.55, 0.80) | 1.23 (1.19, 1.26) | −10.42 (−11.14, −9.70) |
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500Hz | 71 | −0.35 | 10.43 | .79 (0.68, 0.86) | 1.05 (1.03, 1.08) | −1.57 (−2.08, −1.05) |
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1kHz | 72 | −1.24 | 9.28 | .85 (0.76, 0.90) | 1.01 (0.99, 1.03) | −1.49 (−1.96, −1.02) |
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2kHz | 72 | −1.58 | 10.46 | .88 (0.81, 0.92) | 0.90 (0.87, 0.92) | 1.04 (0.48, 1.59) |
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4kHz | 72 | −1.42 | 10.77 | .87 (0.80, 0.92) | 0.98 (0.96, 1.00) | −0.83 (−1.33, −0.33) |
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8kHz | 71 | 1.63 | 10.05 | .88 (0.82, 0.93) | 1.05 (1.04, 1.07) | 0.31 (−0.11, 0.73) |
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Total | 429 | −1.34 | 10.66 | .84 (0.81, 0.86) | 1.02 (1.01, 1.02) | −1.71 (−1.80, −1.62) |
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Mean | 68 | −1.44 | 7.59 | .89 (0.83, 0.93) | 1.01 (1.00, 1.03) | −1.73 (−2.14, −1.33) |