With tendency Without tendency P
  (26/91) (65/91)  
  Mean (%) SD Mean (%) SD  
ERR T2 2.07 3.047 2.09 2.152 0.151 ns
ERR T3 2.99 3.583 3.70 2.755 0.079 ns

ns – non-significant (P<0.05)
Table 3: Comparison of ERR (%) at T2 and T3 between groups with and without tendency toward root resorption (Mann-Whitney test).