Table 1.

Steps and Criteria Applicable When Developing the New HPQ 40 From Several Generic Questionnaires (SCL‐90‐R, SF‐36, GBB, B‐L Zerssen, SF‐36)

1. Considering all items with
Questionnaire	Criteria
‐ SCL‐90‐R	Median ≥1
‐ SF‐36	Median adapted to changing polarity of scales
‐ GBB	Median ≥2
‐ B‐L Zerssen	Median ≥2
‐ General patient questionnaire	Percentage of “yes” answers ≥40
‐ Additional questionnaire	Median ≥2
2. Selection of items on a significant scale in comparison with general population norms
3. Combination of items with same meaning (analogy) and new wording