Excluding the differences related to SVA, the T1 slope in patients with X-rays recorded <3 months apart ( p = 0.048) and the C4–T1 in patients underwent multilevel fusion surgery remained the only borderline significant difference.
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Variation in Sagittal Alignment Parameters in Adult Patients before Spine Surgery: A Serial Imaging Study Using Antero-Posterior and Latero-Lateral Projections.
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The sentences
This variation in SVA was shown in subgroup analyses when the EOS retake interval was >3 months and based on age; borderline significance was shown at an advanced age of 65 years.