Table 1. Demographic data.
| Measures | Stuttering | Controls | Significance |
|---|---|---|---|
| Participants, n | 18 (16M, 2F) | 17 (9M, 8F) | p = ·011 (sig.) |
| Age in years, mean | 27·11 (SD = 9·04) | 24 (SD = 3·32) | p = ·185 (n.s.) |
| Handedness, mean | 78·07 (SD = 51·76) | 85·96 (SD = 16·99) | p = ·547 (n.s.) |
| Education, mean rank | 2·67 (MR = 14·81) | 3·65 (MR = 21·38) | p = ·057 (n.s.) |
| Motor threshold left hemisphere, mean | 45·56 (SD = 7·39) | 44·80 (SD = 4·23) | p = ·741 (n.s.) |
| Percentage of syllables stuttered, mean | 10·80 (SD = 11·28) | 0·62 (SD = 0·00) | p<·001 (sig.) |
| SSI-3 Mean Score | 23·33 (SD = 11·60) | 4·29 (SD = 2·49) | p<·001 (sig.) |
| Severity Assessment | Moderate | None | - |
All group differences were calculated by t-test except for Education, which was calculated by Mann-Whitney U test; U = 95.5, z = -1.93, p = .057. Education was assessed on an ordinal scale (1 –high school to year 10; 2 –high school to year 13; 3 –<2 years university; 4–2+ years university; 5–4+ years university and graduated; 6 –completed doctorate); all other variables were scalar. Handedness was assessed with the Edinburgh Handedness Inventory, translated (Schwarz et al., 1995)–handedness is assessed between -100 (completely left handed) and 100 (completely right handed). SD = standard deviation. MR = mean rank.