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Table 1 Theoretical dimensions and factorial structure of the PLC (Siegrist et al 1996)

From: Evaluation of quality of life and description of the sociodemographic state in adolescent and young adult patients with phenylketonuria (PKU)

  Capacity of Performance Well-being
Physical I. Physical functioning Listing of Symptoms
  (Performance capacity)  
  8 items  
Psychological II. Psychological Functioning III. Positive Mood (5 items)
  (Capacity of enjoying and relaxing) IV. Negative Mood (8 items)
  (8 Items)  
Social V. Social Functioning VI. Social Well-being
  (Capacity of performing in social roles) (Feelings of belonging)
  (6 items) (5 items)