Open Access
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.
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