Table 2 Characteristics of WHODAS 2.0 and the extended Katz index

Selected validation

Ustün et al. [17]

Asberg&Sonn [18]

Target construct

Self-reported disability

Objective dependence in activities of daily living

Domains

Understanding and communication; Getting around; Self-care; Getting along with others; Life activities; Participation in society

Personal activities of daily living (bathing, dressing, toileting, transferring, continence, feeding); Instrumental activities of daily living (shopping, cleaning, transportation, washing, cooking)

Number of items

32

11

Response levels

No difficulty; mild difficulty; moderate difficulty; severe difficulty; extreme difficulty/cannot do it

Independent; partly dependent; dependent

Score range

0–100

Rationally defined dependence levels

Outcome levels in the present study

No problems (0–4); Mild disability (5–24); Moderate disability (25–49); Severe disability (50–95); Extreme disability (96–100)

Independent, Dependent in instrumental activities of daily living; dependent in personal activities of daily living