Treatment self-regulation questionnaire across three self-care behaviours: An instrument validation study in Iranian patients with type 2 diabetes mellitus.
Zahra Hazrati-Meimaneh, Hadi Zamanian, Somayyeh Shalchi Oghli and 4 others
PMID 35489055WHAT IT FOUND
The Persian Treatment Self-Regulation Questionnaire reliably measures diet, exercise, and medication motivation in people with type 2 diabetes.
However, the 'amotivation' subscale fails to separate from 'autonomous motivation', so scores for these two should not be interpreted as distinct factors.
Key findings
01The questionnaire demonstrated acceptable internal consistency and construct validity for autonomous motivation, external regulation, and introjected regulation across three self-care behaviours.
02The amotivation subscale lacked discriminant validity from autonomous motivation, meaning the two constructs were not empirically distinct.
03Floor and ceiling effects were present in all items, with ceiling effects strongest for autonomous motivation and floor effects for amotivation.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The sample was recruited from only two cities in Iran, limiting generalizability to the broader Iranian population. Floor and ceiling effects were present in all items, which may restrict the tool's ability to detect change in highly motivated or highly unmotivated individuals. The study did not examine predictive validity or test-retest reliability. The relationship between TSRQ scores and actual clinical outcomes like HbA1c was not assessed. Social desirability bias may have influenced responses, despite interviewer administration.
Declared interests
The authors declared no conflicts of interest. The study was approved by the Ethics Committee of Qom University of Medical Sciences.
The easy way to misread this
Do not treat a low 'amotivation' score and a high 'autonomous motivation' score as evidence of two separate psychological states. The validation showed these subscales are not empirically distinct, so they may reflect a single underlying dimension of motivation.