Measuring up: Ensuring Intra- and Interobserver Reliability in Stretched Penile Length with the SPLINT Technique

Area of Science:

• Pediatric Urology
• Medical Measurement Techniques

Background:

• Accurate measurement of stretched penile length (SPL) is crucial to prevent patient harm from measurement errors.
• Variations in SPL measurements can be attributed to systematic or random errors.

Purpose of the Study:

• To evaluate the intra- and interobserver variability of the SPLINT technique for measuring stretched penile length (SPL).

Main Methods:

• The SPLINT technique was used to measure SPL in 449 boys aged 0-14 years.
• Measurements were performed by expert and trainee surgeons after standardized training.
• Variability was assessed using intraclass correlation (ICC), relative technical error of measurement (rTEM), and reliability (%).

Main Results:

• High intra- and interobserver reliability was observed for the SPLINT technique.
• Intraobserver variability was inversely proportional to participant age (correlation coefficient = -0.56).
• Reliability of SPL measurements improved with age and was consistently higher for expert surgeons compared to trainees.

Conclusions:

• The SPLINT technique is a validated and reliable method for measuring stretched penile length (SPL).
• The training modules effectively prepared surgeons for accurate SPL measurements.
• SPL can serve as an objective marker for penile dimensions.