Measurement error in the Radiographic Adjudication Committee (RAC)
Research type
Research Study
Full title
Radiographic Measurement Reproducibility and Repeatability in Adolescent Idiopathic Scoliosis
IRAS ID
316711
Contact name
Ashley Cole
Contact email
Sponsor organisation
Sheffield Children's NHS Foundation Trust
Duration of Study in the UK
0 years, 6 months, 28 days
Research summary
The Bracing Adolescent Idiopathic Scoliosis (BASIS) study is looking at patients aged 10-15 years with adolescent idiopathic scoliosis (AIS) who are randomly selected to be treated with a full-time brace or night-time brace. The full-time brace is worn at least 20 hours each day whilst the night-time brace is only worn at night. The aim is to see how effective the two braces are at preventing the curve getting worse to a size where surgery would be considered.
All the x-rays from the study will be measured by the central team and it is important to know how the error for each measurement if they measure the same x-ray twice and how observers compare should two different observers measure the same x-ray.
The primary outcome measure for BASIS is whether the curve (Cobb angle) progresses to 50 degrees or more before skeletal maturity (assessed by Risser stage). This will be assessed by a Radiographic Adjudication Committee of all the Principal Investigators (PIs) at the recruiting sites. Due to busy clinical schedules for the PIs and the need to make a rapid decision, we decided that at least 5 PIs needed to measure Cobb angle and Risser stage to reach a consensus. This study will assess whether the PIs are all similar in their measurement of these x-rays.REC name
N/A
REC reference
N/A