Baby Observational Selective Control AppRaisal (BabyOSCAR): Convergent and discriminant validity and reliability in infants with and without spastic cerebral palsy.
Theresa Sukal-Moulton, Vanessa Maziero Barbosa, Barbara Sargent and 4 others
PMID 38616771WHAT IT FOUND
A 1-minute video of spontaneous movements scored by BabyOSCAR was related to later spastic CP diagnosis and gross motor level.
It also showed higher asymmetry in unilateral CP. Arm scoring was less consistent than leg scoring.
Key findings
01BabyOSCAR scores were lower in infants with spastic CP and were strongly related to GMFCS level at 2 years or later.
02Children with unilateral CP had higher asymmetry scores than children without unilateral CP, and children without unilateral CP had total asymmetry scores less than 5.
03Interrater and test-retest reliability were excellent for total and leg scores and good for arm scores.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study used archived videos from earlier longitudinal research. It did not test whether BabyOSCAR works prospectively in a new clinic population. It included only infants with or without spastic CP and excluded dyskinetic or mixed CP. It cannot show how the tool performs for all CP types. GMFCS level II and III had fewer children than other levels. This limits discrimination among individual GMFCS levels. Arm scores had lower interrater and test-retest reliability than leg scores. The no-CP group was assigned a GMFCS score of 0 for correlation analysis. GMFCS is not a true classification for infants without CP. Test-retest reliability was assessed in only 12 videos. Only two 1-minute clips from the same session were compared. Raters scored together in real time. This may not match independent clinical scoring.
The easy way to misread this
Do not use BabyOSCAR as a substitute for general early detection tools for all CP. It was tested only in infants with or without spastic CP, and the authors state it should not replace tools that detect dyskinetic or mixed CP.