Table 4. PTA and SD of the Right ears by age

Right	Age	16	17	18	19	20	21	22	Kruskal-Wallis test		Total
	n	11	55	70	12	14	8	5	H-statistic	p-value	175
Frequency(Hz)	250	5.45±4.50	8.00±6.00	8.07±5.56	10±4.26	7.50±5.10	7.50±4.63	7.00±2.74	4.6237	0.5929	7.93±5.44
	500	4.55±2.57	6.91±4.62	7.14±4.10	6.67±2.46	7.50±3.80	6.88±3.72	6.00±2.24	5.0394	0.5388	6.88±4.05
	1,000	6.36±3.08	6.73±4.18	7.00±4.09	7.50±2.61	5.71±3.85	7.50±5.98	6.00±2.24	1.7889	0.9381	6.88±4.05
	2,000	6.82±3.86	6.36±4.42	6.36±3.68	7.50±3.37	7.14±4.26	7.50±4.63	7.00±2.74	2.3533	0.8845	6.79±4.00
	3,000	6.82±4.90	6.82±5.51	6.21±4.18	5.83±4.69	5.71±4.32	4.38±3.20	5.00±3.54	2.3349	0.8865	6.59±3.96
	4,000	7.73±6.86	6.82±4.71	5.86±3.87	6.67±3.89	8.57±5.35	3.13±3.72	5.00±3.54	9.1466	0.1655	6.42±4.58
Kruskal-Wallis test	H-statistic	2.7249	1.8801	11.0003	7.4218	3.6798	7.5165	2.3652	-	-	-
	p-value	0.7423	0.8655	0.0514	0.1911	0.5964	0.1850	0.7966	-	-	-
	6 PTAs	6.44±2.54	6.65±3.36	6.62±2.82	7.22±2.26	6.96±3.44	6.67±3.56	6.17±2.09	-	-	6.68±2.99

PTA: pure tone threshold average, SD: standard deviation, 6PTAs: 6 pure tone threshold averages.