Table 2.

Comparison of hearing parameters according to presence of the stapes.

	Stapes	N	Mean	Std. deviation	Mean difference	*P-value
Pre-op PTA	+	45	43.62	17.76	–5.67	0.152
	-	31	49.29	15.22
Post-op PTA	+	45	39.11	20.88	–2.24	0.616
	-	31	41.35	16.03
Gain (dB)	+	45	4.51	15.12	–3.36	0.391
	-	31	7.87	18.74
Pre-op gap	+	45	29.67	11.94	–4.33	0.163
	-	31	34.00	14.81
Post-op gap	+	45	23.04	15.14	–4.28	0.217
	-	31	27.32	14.07
ABG gain	+	45	6.40	13.22	–.28	0.938
	-	31	6.68	17.93
Pre-op SD	+	45	91.96	11.79	–.01	0.996
	-	31	91.97	9.43
Post-op SD	+	45	90.44	13.01	–2.27	0.396
	-	31	92.71	8.42
SD gain	+	45	–1.56	7.91	–2.30	0.213
	-	31	0.74	7.74

*Independent samples test.