|The health state descriptive system (questionnaire)
|Properties of the health state descriptive system
|Replacing missing data
|Valuation system
|Properties of the valuation system
|Use of 15D
|Use as a profile instrument
|How to obtain 15D
|Diseases / conditions / health problems studied
|16D and 17D
|15D User's registration form

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) and for children aged 8-11 (17D).
Copyright: 15D©/Harri Sintonen (www.15D-instrument.net)
News on 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, click http://demo.hoidonvaikuttavuus.fi, for further information and acquision inquiries (including pricing policy), please contact mia.laitinen@corame.fi, phone +358 400 673701.

News on the minimum important change in the 15D scores

In a just accepted article  (Qual Life Res) it was estimated that the minimum important change in the 15D scores is 0.015. For more details, see "Properties of the valuation system".

Author: Terraventum