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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Eur Urol. 2018 Dec 17;75(5):723–730. doi: 10.1016/j.eururo.2018.12.002

Table 4.

Recommendations for use of the crosswalks

Recommendation

  1. If all of the item responses used in the crosswalks are available, the source instrument items should be used to calculate the target domain scores.

  2. If the item responses are not available or if any are missing, we recommend using the source domain scores to calculate the target domain scores.

  3. Predicted values that are outside the valid range of the target domain score should be adjusted to the closest valid target domain score.

  4. We used established thresholds for potency (≥24 out of 30) and urinary continence (≥17 out of 21) on the MSK instrument to establish similar thresholds in the EPIC-26 instrument (≥73 out of 100 for potency and ≥74 for urinary continence).

  5. Patients who report a high confidence in getting an erection but who report no sexual activity should nonetheless be classified as having no erectile dysfunction. This is based on an analysis of outlying patients in the scoring of the IIEF-6, which makes up the MSK sexual domain score.

MSK = Memorial Sloan Kettering; EPIC = Expanded Prostate Cancer Index Composite; IIEF = International Index of Erectile Function.