Table 1.

Definition of the Functioning Domains and the Aspects of Functioning

Domains of functioning
Domain*	Definition and included areas of functioning
Instrumental activities of daily living (IADL)	Includes the assessment of self-care, psychiatric treatment adherence, money management skills, planning skills, transportation and leisure activities
Productive activities	Refers to various goal-oriented activities such as work or school (full-time or part-time), vocational training or employment skills programs, socialization programs, day hospital programs, childcare and/or homemaking
Social functioning	Refers to the interactions with family and friends, including the initiation and appropriateness of social behaviors
Global functioning	Includes measures of functioning that combine items targeting various domains of functioning (eg, combining productive activities and social functioning). Some of these global measures also include the assessment of clinical symptoms along with more traditional aspects of community functioning *Articles including these global measures were only used for the analyses regarding the overall association between ToM and functioning
Aspects of functioning
Aspects of functioning	Definition
Functional outcome	Assessed using measures of community functioning. Includes questionnaires and interviews that assess real-world functioning. These measures can be rated by the patient, an informant, a clinician or a researcher
Functional performance	Measured with performance-based tasks. Typically rely on role-play to assess the functional capacity of an individual. These measures are rated by a clinician or a researcher

*None of the articles included in the meta-analysis used a measure targeting only the first domain of the SOFI, namely living situation.