Table 5.

Mean deviations of user frequency response slope (averaged over 0.5 to 4 kHz, expressed in terms of dB/octave) from prescribed response slopes at low (50 dB SPL), mid (65 dB SPL), and high (80 dB SPL) input levels. Also shown are standard deviation (SD), confidence interval (CI) and range.

		User minus Target slope (dB/octave)
		Low	Mid	High
DSL group	Mean	−0.2	−1.3	−0.7
	SD	2.3	2.3	1.9
	CI	−0.6 to 0.1	−1.6 to −1.0	−0.9 to −0.4
	Range	−9.7 to 3.7	−10.0 to 2.3	−8.3 to 2.7
NAL group	Mean	0.2	−0.3	0.6
	SD	1.9	1.5	1.7
	CI	−0.1 to 0.4	−0.5 to −0.1	0.3 to 0.8
	Range	−6.3 to 8.3	−5.7 to 7.0	−5.0 to 8.0