Table 2. Averages for the difference between auditory and acoustic reflex thresholds in both ears.

Acoustic reflex	500Hz	1kHz	2kHz	4kHz
Mean	73.68	75.83	74.20	67.92
Median	75	75	75	70
Standard deviation	10.58	10.79	12.91	18.05
Minimum	50	55	35	30
Maximum	100	105	105	95
Sample size	72	70	69	65
Lower limit	71.24	73.30	71.16	63.54
Upper limit	76.12	78.36	77.25	72.31