. 2012 Jul 16;14(4):e102. doi: 10.2196/jmir.1818

Table 4.

Mean differences in speech perception scores (D%) assessed with different voice over Internet protocol qualities (degree of packet loss) versus conventional telephone quality using the Hochmair-Schulz-Moser (HSM) Sentence Test.

Participant group	SNR (dB)^a	Packet loss
		None (0%)		Mild (5%)		Medium (10%)		Severe (20%)
		D%	P value	D%	P value	D%	P value	D%	P value
CI^busers	0	+2	NA^c	+1	NA	+2	NA	+2	NA
	5	+21	.002^d	+11	.01^d	+9	.008^d	+1	.81
	10	+36	.001^d	+34	.002^d	+30	.002^d	+4	.04^e
	15	+36	.001^d	+23	.01^e	+25	.006^d	+6	.25
	Quiet	+16	.001^d	+16	.002^d	+16	.002^d	–1	.92
HA^fusers	0	+4	.16	+2	.69	+0	>.99	–1	.02^e
	5	+18	.002^d	+4	.56	+6	.38	–6	.16
	10	+16	.003^d	+9	.08	+4	.32	–12	.02^e
	15	+6	.004^d	–4	.65	–7	.25	–17	.004^d
	Quiet	+2	.16	–1	.31	–1	.56	–7	.004^d
NHA^g	0	+53	.001^d	+46	.002^d	+33	.002^d	+22	.002^d
	5	+17	.003^d	+16	.002^d	+16	.004^d	–3	.49
	10	+1	.21	+3	.06	+1	.47	–6	.009^d
	15	0	NA	0	NA	–1	NA	–1	>.99
	Quiet	0	NA	0	NA	–1	NA	–1	NA

^aSignal to noise ratio.

^bCochlear implant.

^cNot applicable.

^dStatistically significant with Bonferroni correction.

^eStatistically significant without Bonferroni correction.

^fHearing aid.

^gNormal-hearing adults.