Currently, the following versions are available …

Fully structured interviewer-administered versions:

• 36 item
• 12 item screen + up to 24 additional questions, as indicated by screen responses
• 12 item

Fully structured self-administered versions:

• 36 item
• 12 item

Fully structured proxy versions:

• 6 item proxy self-administered
• 6 item clinician self-administered
• 36 item proxy self administered
• 36 item proxy interviewer-administered

Complete descriptions and links for downloading are presented below.

We recommend the 36-item, interviewer-administered version, because it provides the most complete profiling of respondents. If, due to time constraints and/or study design, it is not feasible to use a 36-item interviewer-administered version, shorter and/or self-administered versions are high-quality alternatives.

A WHODAS II Training Manual also is available. Everyone who administers the WHODAS II should read this manual and complete the included exercises.

36 ITEM

This is the recommended version of the WHODAS II. This version provides the most complete assessment of functioning. Scores for six domains of functioning, as well as an overall functioning score, can be calculated.

For each item that is positively endorsed, a follow-up question asks about the number of days (in the past 30 days) the respondent has experienced this difficulty. The DAY CODES version assesses number of days using a five-point ordinal scale, while the DAYS version simply asks the respondent to report the actual number of days the difficulty was present.

12 ITEM

This shorter version is useful for brief assessments of overall functioning.

12+24 SCREENER

This version uses 12 items to screen for problematic domains of functioning. Based on responses to the initial 12 items, respondents are given up to 24 additional questions.

36 ITEM

This version assesses all six domains of functioning, and provides detailed information regarding difficulties in these areas. An overall functioning score also can be calculated.

12 ITEM

This shorter, self-administered version can be used when domain-specific information regarding functioning is not required.

6 ITEM SELF-ADMINSTERED PROXY

The 6-item, self-administered, proxy version allows someone other than the primary respondent to provide their evaluation of the primary respondent's difficulties with functioning. This version can be used when the primary respondent cannot complete a self-evaluation, or to allow for comparisons of perceptions of difficulty. This version can be completed by family members, friends, or anyone with frequent contact with the primary respondent, such as caregivers.

6 ITEM SELF-ADMINISTERED CLINICIAN

This version allows the primary-respondent's clinician to provide input regarding the primary respondent's level of functioning.

36 ITEM SELF-ADMINISTERED PROXY

The 36-item, self-administered, proxy version allows someone other than the primary respondent to provide their evaluation of the primary respondent's difficulties with functioning. The 36-items are virtually identical to the 36-item primary respondent versions. Scores can be calculated for each of the six domains of functioning, as well as for overall functioning.

36 ITEM INTERVIEWER-ADMINISTERED PROXY