SAS score

t value

P value

Before PKP

66.34 ± 8.38

One day after PKP

33.12 ± 5.67^*

32.34

0.00

One month after PKP

35.74 ± 4.93^*

31.00

0.00

three months after PKP

39.47 ± 3.71^*

28.88

0.00