Table 5.

The standard deviation of the difference in the hearing threshold determined by means of the ascending method between measurements on clinical audiometer and the biologically calibrated personal computer, together with corresponding confidence intervals at P=.05 estimated on the basis of measurements carried out by 25 participants.

Method	Hearing threshold difference (dB), SD (95% CI)
	Independent coefficients	Modeled coefficients	Single coefficient
Modulated signal	7.60 (7.01, 8.31)	8.88 (7.79, 10.17)	9.31 (8.09, 10.89)
Dual tone (5 dB)	8.59 (7.90, 9.42)	8.99 (7.89, 10.29)	10.14 (8.88, 11.77)
Dual tone (2 dB)	8.88 (8.16, 9.74)	9.03 (7.93, 10.33)	10.38 (9.11, 12.03)
Ascending (5-dB step)	7.98 (7.35, 8.74)	8.92 (7.83, 10.22)	9.63 (8.39, 11.23)
Ascending (2-dB step)	7.61 (7.01, 8.31)	8.88 (7.79, 10.17)	9.32 (8.10, 10.90)
Bekesy (continual)	7.58 (6.99, 8.29)	8.88 (7.78, 10.17)	9.30 (8.08, 10.88)
Bekesy (modulated)	7.27 (6.71, 7.93)	8.84 (7.75, 10.14)	9.05 (7.84, 10.61)