Table 3.

Cognitive evaluation performed on a subgroup of INPH subjects.

	Mean (SD)
MMSE (N = 44)	25 (3.48)
TMT-A (N = 43)	90.84 (54.72)
TMT-B (N = 34)	212.85 (123.77)
TMT-B-A (N = 34)	141.79 (98.98)
SDMT (N = 38)	15.76 (10.76)

MMSE, mini mental state examination; TMT, trail making test; SDMT, symbol digit modalities test; INPH, idiopathic normal pressure hydrocephalus.

The MMSE score of 25 shows a moderate cognitive impairment. Some patients failed to perform some test (TMT A and B or SDMT) because they did not understand the task or could not do it. Nevertheless, TMT A and B and SDMT scores show that our patients present with difficulties in executive function, sustained attention, and processing speed.