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Table 1 Conceptualization and operationalization of the concept ‘inability to work full time’

From: Exploring the concept inability to work fulltime in the context of work disability assessments: a qualitative study

Conceptualization (identifying key elements)
Characteristics Inability to work normal working hours
  Variability of inability to work fulltime:
- due to time
- due to underlying disease
Dimensions
  Disease and personal factors (i.e. psychological and lifestyle factors)
  Environmental factors (i.e. work-related and social factors, and norms)
Operationalization (measurable indicators)
Indicators
  Fatigue
  Cognitive impairments
  Restrictions in functioning in- and outside work
Assessment methods
  Self-assessment
  Assessment interviews
  Functional testing
  Assessment in the actual work setting