Construct validity and inter-rater reliability of the Dutch activity measure for post-acute care “6- clicks” basic mobility form to assess the mobility of hospitalized patients

Authors Sven J.G. Geelen, Karin Valkenet, Cindy Veenhof
Published in Disability and Rehabilitation
Publication date 2018
Research groups Innovation of Movement Care
Type Article


To evaluate the construct validity and the inter-rater reliability of the Dutch Activity Measure for Post- Acute Care “6-clicks” Basic Mobility short form measuring the patient’s mobility in Dutch hospital care. First, the “6-clicks” was translated by using a forward-backward translation protocol. Next, 64 patients were assessed by the physiotherapist to determine the validity while being admitted to the Internal Medicine wards of a university medical center. Six hypotheses were tested regarding the construct “mobility” which showed that: Better “6-clicks” scores were related to less restrictive pre-admission living situations (p¼0.011), less restrictive discharge locations (p¼0.001), more independence in activities of daily living (p¼0.001) and less physiotherapy visits (p<0.001). A correlation was found between the “6-clicks” and length of stay (r¼ 0.408, p¼0.001), but not between the “6-clicks” and age (r¼ 0.180, p¼0.528). To determine the inter-rater reliability, an additional 50 patients were assessed by pairs of physiotherapists who independently scored the patients. Intraclass Correlation Coefficients of 0.920 (95%CI: 0.828–0.964) were found. The Kappa Coefficients for the individual items ranged from 0.649 (walking stairs) to 0.841 (sit-to-stand). The Dutch “6-clicks” shows a good construct validity and moderate-toexcellent inter-rater reliability when used to assess the mobility of hospitalized patients.

On this publication contributed

  • Cindy Veenhof portret
    Cindy Veenhof
    • Professor
    • Research group: Innovation of Movement Care

Language English
Published in Disability and Rehabilitation
Key words ziekenhuizen, opname, Fysiotherapie, mobiliteit, bewegen, meetinstrumenten

Innovation of Movement Care