Welcome to the homepage of the 15D©
The health-related quality of life (HRQoL) instrument

This website provides information of the 15D, its properties and usage.

The 15D is a generic, comprehensive (15-dimensional), self-administered instrument for measuring HRQoL among adults (age 16+ years). It combines the advantages of a profile and a preference-based, single index measure. A set of utility or preference weights is used to generate the 15D score (single index number) on a 0-1 scale. In most of the important properties the 15D compares favourably with other preference-based generic instruments.

Based on the 15D, a version has also been developed for adolescents aged 12-15 years (16D, is also used up to the age of 18) and for children aged 8-11 (17D, with parent-administration even younger).

Copyright: 15D©/Harri Sintonen (www.15D-instrument.net)

Electronic versions

An electronic, internet-based tools for collecting the 15D/16D/17D data, calculating the 15D/16D/17D scores and dimension level values on a 0-1 scale, drawing graphical 15D/16D/17D profiles and making comparisons to age- and gender-standardised general population scores are available. The tools are commercial products. For demo of the 15D, clickhttp://demo.hoidonvaikuttavuus.fi, for further information and acquision inquiries (including pricing policy), please contact mia.laitinen@bcbmedical.com,phone +358 400 673701.

News on the minimum important change in the 15D scores

In a recent article (Qual Life Res) it was estimated that the minimum important change/difference in the 15D scores is 0.015. For more details, see "Properties of the valuation system" and http://www.ncbi.nlm.nih.gov/pubmed/25145637.