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Table 5 Comparison of our Caucasian tip values with those measured by Andrews

From: Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion

Caucasians—tip Andrews’ values Comparison
  n Mean Standard deviation n Mean Standard deviation t test p level
TIP U7 60 −3.88 10.60 240 .39 5.69 −3.02 0.004
TIP U6 60 10.26 5.54 240 5.73 1.90 6.24 <0.001
TIP U5 60 9.64 4.16 240 2.82 1.52 12.49 <0.001
TIP U4 60 7.67 4.28 240 2.65 1.69 8.91 <0.001
TIP U3 60 9.96 4.81 240 8.40 2.97 2.40 0.019
TIP U2 60 9.99 3.69 240 8.04 2.80 3.83 <0.001
TIP U1 60 4.53 2.84 240 3.59 1.65 2.46 0.017
TIP L7 60 14.20 6.47 240 2.94 2.05 13.32 <0.001
TIP L6 60 10.99 2.78 240 2.03 1.14 24.47 <0.001
TIP L5 60 6.90 3.09 240 1.54 1.35 13.12 <0.001
TIP L4 60 6.06 3.36 240 1.28 1.90 10.60 <0.001
TIP L3 60 5.913 3.980 240 2.48 3.28 6.18 <0.001
TIP L2 60 .14 4.46 240 .38 1.47 −.41 ns
TIP L1 60 .00 4.46 240 .53 1.29 −.90 ns
  1. ns not significant.