Before chemotherapy

After chemotherapy

S-1 group

Capecitabine group

t

P value

S-1 group

Capecitabine group

t

P value

MMSE score

25.64 ± 1.29

25.83 ± 1.15

0.596

0.554

25.44 ± 1.44

25.74 ± 1.01

0.902

0.372

MOCA score

27.00 ± 0.65

26.89 ± 0.68

0.658

0.513

26.76 ± 0.78

26.83 ± 0.67

0.367

0.715

Instant memory score

2.92 ± 0.76

2.89 ± 0.87

0.159

0.874

2.84 ± 0.75

2.71 ± 0.89

0.574

0.568

Delayed memory score

1.60 ± 0.58

1.89 ± 0.72

1.644

0.106

1.48 ± 0.59

1.74 ± 0.78

1.421

0.161