Table 2.

Details of speakers (numbered in column 1, Y1 stands for the youngest speaker in the child group G1, T1 for the youngest teenager in G2 and A1 for the youngest adult in G3 etc.), age (given in column 2 in years;months), gender (column 3), number of words in speech sample (column 4), percentage stuttering rate in the sample (column 5), and number of content words that are stuttered (column 6).

Speaker	Age	Gen	Number of words	Stuttering rate (%)	Number of words stuttered
Y1	6;9	M	324	15.12	49
Y2	6;0	M	990	8.28	82
Y3	9;6	F	267	6.73	18
Y4	7;3	M	686	5.39	37
Y5	8;0	M	755	3.18	7
Y6	8;11	F	206	3.40	7
Y7	9;0	M	656	6.25	41
Y8	7;0	M	345	10.72	37
Y9	8;9	M	431	5.10	22
Y10	7;0	M	406	33.25	135
Y11	8;0	M	251	22.71	57
Y12	9;3	M	133	5.26	7
Y13	8;0	F	342	9.36	32
Y14	8;0	F	614	8.63	53
Y15	8;0	M	221	17.65	39
Y16	8;0	M	222	15.32	34
				Mean 11.02%
				SD 8.11%
T1	11;3	M	1438	3.96	57
T2	10;6	M	459	33.33	153
T3	11;3	M	1251	11.59	145
T4	12;0	M	617	3.79	23
T5	11;0	M	300	17.50	52
T6	11;1	F	448	26.66	120
T7	12;1	M	966	17.18	166
T8	10;3	M	337	21.96	74
T9	11;3	M	374	27.01	101
T10	16;8	M	440	4.32	19
T11	14;5	M	448	8.71	39
T12	13;11	F	163	41.72	68
T13	14;2	M	102	6.58	7
T14	17;1	M	158	18.35	29
T15	15;7	M	445	4.94	22
T16	16;11	M	158	54.43	86
				Mean 18.88%
				SD 14.83%
A1	26;0	M	4488	13.86	622
A2	25;0	M	2670	7.87	210
A3	25;0	M	1706	5.16	88
A4	28;0	M	976	10.14	99
A5	35;0	M	924	15.37	142
A6	24;0	M	3120	4.17	130
A7	20;0	M	1728	9.43	163
A8	40;0	M	1080	22.04	238
A9	21;0	M	1481	11.34	168
A10	25;0	M	723	15.49	112
				Mean 11.49%
				SD 10.74%