Quality of Life Research, Vol. 24, No. 3, SPECIAL SECTION ON RESPONSE SHIFT AND MISSING DATA (March 2015), pp. 567-573 (7 pages) Purpose Patient-reported health-related quality-of-life (HRQoL) ...

Spline theory and piecewise regression theory are integrated to provide a framework in which structural change is viewed as occurring in a smooth fashion. Specifically, structural change occurs at ...

Piecewise linear regression was employed to estimate the kinetics of immunological recall after BTI to measure: (1) the duration of time from symptom onset and earliest alteration in neutralizing ...

The study protocol (TRN 98-0198-003) was approved by the Ethics Committees of the Universities of Göteborg (for Göteborg and Halmstad), Umeå, Uppsala and Malmö and the Medical Product Agency of Sweden ...