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. 2017 Jul 18;122(3):194–200. doi: 10.1080/03009734.2017.1340372

Table 2.

Principles of dichotomization of the various methods.

Method Neurogenic Non-neurogenic
Ransford (penalty points) 0–2 3+
Udén N, PN NN, PNN
Gatchel (ticked boxes, n) 0–19 20+