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Table 4 Correlation Matrix (Spearman Rank Order Correlations) with Age, Education, EDSS score and CANTAB tests’ measures. Correlations in bold are statistically significant (p < 0.05) with r values shown ranging from −0.884 to 0.959. Note that Age, Education and EDSS score had only mild to moderate correlations with CANTAB tests’ measures (r values ranging from -0.478 to 0.532). Abbreviations utilized from the List of Abbreviations in this paper

From: The subtleties of cognitive decline in multiple sclerosis: an exploratory study using hierarchichal cluster analysis of CANTAB results

  AGE ED EDSS STG TE A’ PH ML FTMS MTS TEA FCAS 5CMT 5CRT SAS SMT SRT TC
AGE 1.000 − 0.034 0.271 0.333 0.429 −0.137 − 0.074 − 0.144 − 0.478 0.502 0.502 − 0.079 0.207 0.066 − 0.084 0.383 0.169 −0.389
ED −0.034 1.000 −0.166 −0.189 − 0.392 0.532 0.456 0.225 0.304 −0.267 −0.267 0.276 −0.197 − 0.192 0.194 − 0.297 −0.353 0.367
EDSS 0.271 −0.166 1.000 0.428 0.384 −0.189 −0.254 − 0.254 −0.191 0.301 0.241 0.133 0.302 0.080 −0.123 0.151 0.166 −0.396
STG 0.333 −0.189 0.428 1.000 0.750 −0.191 −0.098 − 0.192 −0.280 0.266 0.307 −0.014 0.321 0.105 −0.157 0.447 0.263 −0.311
TE 0.429 −0.392 0.384 0.750 1.000 −0.278 −0.135 − 0.238 −0.422 0.392 0.401 −0.219 0.237 0.097 −0.184 0.401 0.260 −0.308
A’ −0.137 0.532 −0.189 −0.191 − 0.278 1.000 0.891 0.407 0.393 −0.427 −0.439 0.324 −0.168 − 0.135 0.397 − 0.302 −0.299 0.550
PH −0.074 0.456 −0.254 −0.098 − 0.135 0.891 1.000 0.385 0.243 −0.259 −0.275 0.276 −0.111 − 0.126 0.281 − 0.212 −0.233 0.406
ML −0.144 0.225 −0.254 −0.192 − 0.238 0.407 0.385 1.000 0.165 −0.281 −0.246 0.292 −0.200 − 0.259 0.251 − 0.093 −0.380 0.314
FTMS −0.478 0.304 −0.191 −0.280 − 0.422 0.393 0.243 0.165 1.000 −0.850 −0.884 0.305 −0.205 − 0.005 0.187 − 0.378 −0.182 0.489
MTS 0.502 −0.267 0.301 0.266 0.392 −0.427 −0.259 − 0.281 −0.850 1.000 0.959 −0.242 0.216 −0.005 −0.261 0.348 0.152 −0.546
TEA 0.502 −0.267 0.241 0.307 0.401 −0.439 −0.275 − 0.246 −0.884 0.959 1.000 −0.241 0.276 −0.020 −0.243 0.407 0.136 −0.540
FCAS −0.079 0.276 0.133 −0.014 −0.219 0.324 0.276 0.292 0.305 −0.242 −0.241 1.000 −0.149 − 0.308 0.307 − 0.124 −0.289 0.222
5CMT 0.207 −0.197 0.302 0.321 0.237 −0.168 −0.111 − 0.200 −0.205 0.216 0.276 −0.149 1.000 0.270 −0.221 0.776 0.294 −0.303
5CRT 0.066 −0.192 0.080 0.105 0.097 −0.135 −0.126 − 0.259 −0.005 − 0.005 −0.020 − 0.308 0.270 1.000 −0.257 0.235 0.795 −0.414
SAS −0.084 0.194 −0.123 −0.157 − 0.184 0.397 0.281 0.251 0.187 −0.261 −0.243 0.307 −0.221 − 0.257 1.000 − 0.098 −0.116 0.297
SMT 0.383 −0.297 0.151 0.447 0.401 −0.302 −0.212 − 0.093 −0.378 0.348 0.407 −0.124 0.776 0.235 −0.098 1.000 0.421 −0.400
SRT 0.169 −0.353 0.166 0.263 0.260 −0.299 −0.233 − 0.380 −0.182 0.152 0.136 −0.289 0.294 0.795 −0.116 0.421 1.000 −0.506
TC −0.389 0.367 −0.396 −0.311 − 0.308 0.550 0.406 0.314 0.489 −0.546 −0.540 0.222 −0.303 − 0.414 0.297 − 0.400 −0.506 1.000