NIH ToolBox Cognition Battery scores in iTTP patients without SCI and with SCI. Survivors of iTTP with SCI had lower scores on multiple tests of the NIH ToolBox Cognition Battery with significantly low scores on the flanker inhibitory control and attention test and pattern comparison test, which assess executive function and processing speed, respectively, compared with iTTP survivors who did not have SCI. Individuals with SCI also had lower cognition fluid composite and cognition total composite scores.