The incidence of treatment-related TEAEs was 26.3 % for zonisamide compared with 19.6 % for carbamazepine , and the most frequently reported treatment-related TEAEs were decreased weight ( 5.1 % vs. 0 % ) , decreased appetite ( 3.6 % vs. 0 % ) , memory impairment ( 2.9 % vs. 3.2 % ) , and decreased hemoglobin level ( 1.5 % vs. 3.2 % ) .