Grade
Pre-Repair
Post-Repair
Z
P-value
TT ng/dl
1
2
3
297 ± 0.01
234 ± 0.24
210 ± 0.05
498 ± 0.09
439 ± 0.28
412 ± 0.11
−2.810
−2.805
−2.812
0.005