Table 3.

Reflectance and reflectance area index (RAI) values for the 0, 10, 90, and 100^th percentiles for the DP-pass and DP-refer groups. These percentiles were used to define the normative pass, ambiguous, and retest reflectance regions for the tone-stimulus frequencies illustrated in Figure 3 and the frequency ranges in Figure 4. The pass region was defined by the 0^th percentile for DP-pass and the 10^th percentile for DP-refer; the ambiguous region was defined by the 10^th percentile for DP-refer and the 90^th percentile for DP-pass, and the retest region was defined by the 90^th percentile for DP-pass and the 100^th percentile for DP-refer.

			Percentile
Frequency/ Frequency Range (kHz)	Stimulus type	DP-status	0	10	90	100
1.0	Tone	Pass	10.1	24.8	63.6	84.7
1.5	Tone	Pass	2.6	15.3	52.3	87.6
2.0	Tone	Pass	0.6	10.7	54.5	87.9
3.0	Tone	Pass	6.8	30.4	67.7	92.2
4.0	Tone	Pass	9.7	35.2	71.3	94.2
6.0	Tone	Pass	0.1	4.3	58.6	90.5
1.0	Tone	Refer	16.0	37.0	82.4	88.9
1.5	Tone	Refer	10.5	31.9	84.3	88.9
2.0	Tone	Refer	10.8	33.9	86.0	92.0
3.0	Tone	Refer	19.3	48.3	88.7	94.0
4.0	Tone	Refer	11.7	37.2	88.9	96.3
6.0	Tone	Refer	0.0	11.8	88.5	100.0
0.2 to 6 kHz	Chirp	Pass	16.9	28.8	59.9	84.5
1 to 2 kHz	Chirp	Pass	6.8	17.2	53.0	82.3
1 to 4 kHz	Chirp	Pass	13.0	27.7	59.3	84.4
1 to 6 kHz	Chirp	Pass	14.9	25.3	59.7	86.1
2 to 4 kHz	Chirp	Pass	13.8	29.0	65.1	87.5
2 to 6 kHz	Chirp	Pass	11.5	25.4	64.2	88.5
4 to 6 kHz	Chirp	Pass	7.2	18.2	65.1	95.2
2 kHz	Chirp	Pass	1.5	10.1	56.0	84.5
0.2 to 6 kHz	Chirp	Refer	31.7	44.0	86.1	92.6
1 to 2 kHz	Chirp	Refer	17.2	37.2	84.6	88.7
1 to 4 kHz	Chirp	Refer	28.8	45.9	87.5	91.3
1 to 6 kHz	Chirp	Refer	26.4	42.2	87.3	94.1
2 to 4 kHz	Chirp	Refer	19.6	46.6	89.1	94.6
2 to 6 kHz	Chirp	Refer	21.2	40.7	87.8	96.6
4 to 6 kHz	Chirp	Refer	13.9	25.6	88.9	98.9
2 kHz	Chirp	Refer	14.0	39.1	87.1	92.6