Table 1 Comparison of NIC-A, NIC-V, NCT-A and NCT-V (mean ± SD)

Group A (n = 45)

0.28 ± 0.04^bd

0.33 ± 0.06^bd

0.54 ± 0.06^bd

0.57 ± 0.07^bd

Group B (n = 33)

0.23 ± 0.05^ac

0.27 ± 0.04^ac

0.47 ± 0.06^ac

0.50 ± 0.04^ac

Group C (n = 12)

0.29 ± 0.06^bd

0.31 ± 0.04^bd

0.51 ± 0.06^bd

0.54 ± 0.05^bd

Group D (n = 30)

0.24 ± 0.05^ac

0.28 ± 0.07^ac

0.48 ± 0.07^ac

0.49 ± 0.06^ac

F value

9.11

6.67

13.36

15.86

P value

< 0.01

< 0.01

< 0.01

< 0.01