Table 2.
Performance on the Hayling score and subscores for the 4 groups of participants and statistical comparisons between groups
| Hayling overall score | “Initiation’’ subscore | “Suppression” subscore | “Suppression-errors” subscore | |
| All patients, N = 45 | 4.62 (1.89)C, 1–7 | 4.88 (1.55)C, 1–7 | 4.74 (1.79)C, 1–6 | 5.49 (2.11)C, 1–7 |
| Rostral PF, N = 8 | 2.75 (2.05)C,N,P, 1–6 | 3.62 (1.69)C,N,P, 1–6 | 4.00 (2.00)C, 1–6 | 4.25 (2.66)C, 1–7 |
| Posterior PF, N = 18 | 4.78 (1.87)C,R, 1–6 | 5.25 (1.24)R, 3–7 | 4.50 (2.07)C, 1–6 | 5.44 (2.25)C, 1–7 |
| Non Frontal, N = 19 | 5.26 (1.33)C,R, 1–6 | 5.11 (1.52)R, 1–7 | 5.26 (1.33)C, 1–6 | 6.05 (1.55), 2–7 |
| Controls, N = 110 | 6.07 (1.30)N,P,R, 2–10 | 5.51 (1.19)R, 1–8 | 5.84 (0.94)N,P,R, 3–8 | 6.46 (1.40)P,R, 2–8 |
| Four groups effect (Kruskal–Wallis) | H (3) = 28.49; P < 0.001 | H (3) = 14.16; P = 0.003 | H (3) = 2.80; P < 0.001 | H (3) = 1.06; P = 0.018 |
| All patients versus “Controls” | U = 1382; z = −4.71; P < 0.001 | U = 1726.5; z = −2.74; P = 0.006 | U = 1496; z = −4.10; P < 0.001 | U = 1669; z = −2.81; P < 0.001 |
| “Rostral PF” versus “Controls” | U = 78; z = −4.20; P < 0.001 | U = 142; z = −3.59; P < 0.001 | U = 162; z = −3.59; P < 0.001 | U = 217; z = −2.44; P = 0.015 |
| “Rostral PF” versus “Non Frontal” | U = 24; z = −3.00; P = 0.004 | U = 35.5; z = −2.24; P = 0.025 | U = 43; z = −1.94; P = 0.052 | U = 47.5; z = −1.62; P = 0.106 |
| “Rostral PF” versus “posterior PF” | U = 32; z = −2.31; P = 0.026 | U = 27; z = −2.36; P = 0.018 | U = 49; z = −0.97; P = 0.330 | U = 51; z = −0.83; P = 0.405 |
| “Posterior PF” versus “Controls” | U = 597.5; z = −2.95; P = 0.003 | U = 741; z = −1.06; P = 0.292 | U = 545; z = −2.94; P = 0.003 | U = 604; z = −2.02; P = 0.043 |
| “Posterior PF” versus “Non Frontal” | U = 151.5; z = −0.67; P = 0.504 | U = 146; z = −0.21; P = 0.830 | U = 126.5; z = −0.98; P = 0.328 | U = 126; z = −0.93; P = 0.351 |
| “Non Frontal” versus “Controls” | U = 706.5; z = −2.50; P = 0.012 | U = 843.5; z = −1.41; P = 0.158 | U = 789; z = −2.02; P = 0.044 | U = 848; z = −1.26; P = 0.208 |
Note: Values are scaled scores out of 10. Mean are reported with standard deviation in brackets, followed by Min and Max values. For each raw, the superscript characters indicate the significance of a statistical comparison between the group described in this raw and “Rostral PF” (R), “posterior PF” (P), “Non Frontal” (N), and “Controls” (C). The actual statistical results of these comparisons are detailed in the lower columns of the table. In these latter columns, significant differences appear in bold (P < 0.05).