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Table 4 Two-piecewise regression model

From: Dose-response relationship between symptom duration and postoperative patient-reported outcomes in patients with adult spinal deformity

Inflection point

Effect size (OR)

95% CI

p-value

≤ 18.4 months

> 18.4 months

1.33

2.01

0.78–3.31

1.23–2.60

0.788

< 0.001

  1. An 18.4 months threshold for the preoperative symptom duration existed for the risk of unfavorable PROs
  2. Adjusted CCI, ASA, frailty, TK, LL, PT, PI, SVA, TPA, number of fused levels, surgical approach, operative time, EBL, intraoperative blood loss, reoperation and major complication
  3. CCI: Charlson comorbidity index; ASA: American Society of Anaesthesiologists; TK: thoracic kyphosis; LL: lumbar lordosis; PT: pelvic tilt; PI: pelvic incidence; SVA: sagittal vertical axis; TPA: T1 pelvic angle; EBL: estimated blood loss
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X