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Table 1

Statistical significance of USS vs. Legacy System regarding angular kyphosis and anterior vertebral height.

Independent samples t-test of USS vs. Legacy system
t df p Mean difference SE difference
Preop kyphosis 0.735 38.00 0.467 2.750 3.741
Post-op kyphosis −2.206 38.00 0.034 −7.450 3.378
6 months kyphosis −2.088 38.00 0.044 −7.205 3.450
12 months kyphosis −2.192 38.00 0.035 −7.592 3.464
Preop height 0.293 38.00 0.771 0.044 0.152
Post-op height −2.919 38.00 0.006 −0.360 0.123
6 months height −3.009 38.00 0.005 −0.372 0.124
12 months height −4.615 38.00 <.001 −0.501 0.109

Note. Student’s t-test.