Passing-Bablok Regression — Method Comparison Explained in 2 Minutes
Do two measurement devices really agree? Passing-Bablok regression tells you in 2 minutes.
In this video you'll learn:
What Passing-Bablok regression is and why it's the lab-medicine standard for method comparison
How the slope is the median of all pairwise slopes (non-parametric, outlier-resistant)
The slope and intercept formulas, plugged in step by step
The two confidence-interval checks: slope CI vs 1 (proportional bias) and intercept CI vs 0 (systematic bias)
Why it beats ordinary least squares when both methods have error, and when to add Bland-Altman
Example: 12 paired blood-glucose readings, 66 pairwise slopes, fit Y = 1.46 + 1.028 X. Slope CI [1.008, 1.043] excludes 1 (proportional bias); intercept CI [-1.01, 4.67] includes 0 (no systematic bias).
Doc: https://metricgate.com/docs/passing-b...
Calculator: https://metricgate.com/calculator/pas...
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