Table 1 Psychometric characteristics of the instruments included

Life Skill Profile (LSP) [42]

Self-care

Concurrent validity, this scale was compared with the social behaviour schedule SBS: 0.56

Interrater reliability r = 0.62, and internal consistency α = 0.82

Interpersonal social behaviour

Concurrent validity, this scale was compared with the social behaviour schedule SBS: 0.54

Interrater reliability r = 0.69, and internal consistency α = 0.77

Communication and social contact

Concurrent validity, this scale was compared with the social behaviour schedule SBS: 0.63

Interrater reliability r = 0.86, and internal consistency α = 0.86

Non-personal social behaviour

Concurrent validity, this scale was compared with the social behaviour schedule SBS: 0.36

Interrater reliability r = 0.76, and internal consistency α = 0.78

Autonomous life

Concurrent validity, this scale was compared with the social behaviour schedule SBS: 0.46

Interrater reliability r = 0.76, and internal consistency α = 0.80

Positive and Negative Syndrome Scale (PANSS) [43]

Positive symptoms

Concurrent validity, it was compared with the Andreasen positive scale, r = 0.70

Interrater reliability ICC = 0.72, and internal consistency α = 0.62

Negative symptoms

Concurrent validity, it was compared with the Andreasen negative scale, r = 0. 81

Interrater reliability ICC = 0.80, and internal consistency α = 0.92

General psychopathology

Interrater reliability ICC = 0.56, and internal consistency α = 0.55

EuroQol 5D [45]

Mobility

Self-care

Usual activities

Pain/ Discomfort

Anxiety/Depression

Concurrent validity, it was compared with the SF-6D, r = 0.73 [46]

Construct validity it was evaluated in spanish population