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Table 3 Correlations between GOES and the variables chosen to evaluate convergent and discriminant validity

From: Staff ratings of occupational engagement among people with severe mental illness – psychometric properties of a screening tool in the day center context

 

Coefficient

P-value

Indicators of convergent validity

 Activity level (based on the SDO)

r = 0.23

p = 0.034

 Clear goals (motivation aspect)

r = 0.47

p < 0.001

 Prefer work (motivation aspect)

r = 0.33

p = 0.003

 Worker role (based on WRS)

r = 0.26

p = 0.019

 Hours/ week (spent at the day center)

r = 0.27

p = 0.015

Indicators of discriminant validity

 POES-P (attendee perceptions of engagement)

r = 0.04

ns.

 Self-rated health (single SF-36 item)

r = −0.06

ns.

 GAF (psychosocial functioning)

r = −0.04

ns.

 BPRS (psychiatric symptoms)

r = −0.16

ns.

  1. GOES General Occupational Engagement in people with Severe mental illness, SDO Satisfaction with Daily Occupations, WRS Worker Role Self-assessment, POES-P Profiles of Occupational Engagement in Severe mental illness – Productive occupations, GAF Global Assessment of Functioning, BPRS Brief Psychiatric Rating Scale