Table 1

Proposed response scale consistent with the ICF qualifiers

Response optionsDescriptorScaling
0No problem0%–4% of the time
1Mild problem5%–24% of the time
2Moderate problem25%–49% of the time
3Severe problem50%–95% of the time
4Complete problem96%–100% of the time
  • Adapted from ICF, by WHO (2001).

  • ICF, International Classification of Functioning, Disability and Health.