Table 4.
Determinants of RCPM test
| Variables | Coefficient | SD | P-value |
|---|---|---|---|
| Base | 0.00591 | (0.141) | 0.967 |
| Education (years) | 0.0614*** | (0.0142) | 1.73e−05 |
| Left hemisphere | −0.133 | (0.0784) | 0.0908 |
| Extra effect for RH | −0.0293 | (0.0204) | 0.150 |
| Professional | 0.158 | (0.145) | 0.277 |
| Administrative | −0.0768 | (0.107) | 0.473 |
| Unskilled | −0.258** | (0.116) | 0.0269 |
| Pensioners | 0.191 | (0.164) | 0.244 |
| Volume (in log) | −0.0345 | (0.0352) | 0.328 |
| High-grade glioma | −0.0310 | (0.0939) | 0.741 |
| Metastasis | −0.223 | (0.246) | 0.364 |
| Meningioma | −0.0863 | (0.150) | 0.565 |
| Cavernoma/AVM | −0.117 | (0.159) | 0.462 |
| Other histology | −0.0422 | (0.253) | 0.868 |
| Relapsed | 0.202** | (0.0907) | 0.0262 |
| Fronto-parietal | 0.349 | (0.217) | 0.109 |
| Fronto-temporal | 0.119 | (0.114) | 0.297 |
| Occipital/P/T | −0.169 | (0.191) | 0.377 |
| Parietal | −0.224* | (0.117) | 0.0565 |
| Temporal | −0.00763 | (0.109) | 0.944 |
| Temporo-parietal | −0.162 | (0.167) | 0.333 |
| Lefthanded | 0.228 | (0.173) | 0.188 |
| Large city | 0.00847 | (0.151) | 0.955 |
| Smaller city | 0.0305 | (0.0805) | 0.705 |
| Observations | 673 |
Association between the RCPM (Raven Coloured Progressive Matrices) test and characteristics of the tumour. We control for the socio-demographic variables. Included in the regression, age, age squares, gender, and place and nature of the residence, none of which are associated with the test. The base level (top row) is the predicted value of a right-handed male patient of average age and education, with the average RCPM score, at the first surgery for an average log–volume frontal low-grade glioma tumour in the right hemisphere, who is employed as a skilled manual worker or equivalent occupation and lives in a rural location in the north of Italy. AVM is arterial–venous malformation, RH is the right hemisphere, and occipital/P/T is parietal/temporal. The P-values are denoted by asterisks: ***P < 0.01, **P < 0.05, and *P < 0.09.