Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)-0

Ing on edge") displaying cross-diagnostic DIF. The item characteristic curves (ICCs; grey curves) represent the expected probabilities of item endorsement (y-axis) at various levels of the measured construct (x-axis). Superimposed plots represent the observed responses by people with PD and PAD, as divided into six class intervals according to their levels of illness-related distress. Observed differences indicate that items do not work the same way in the two diagnostic groups. For comparison, panel C illustrates an item without DIF (item 14/"feel as if losing control").<p><b>Copyright information:</b></p><p>Taken from "Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)"</p><p>http://www.hqlo.com/content/6/1/47</p><p>Health and Quality of Life Outcomes 2008;6():47-47.</p><p>Published online 2 Jul 2008</p><p>PMCID:PMC2483964.</p><p></p

Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)-2

Er adjustment for DIF by means of item split (y-axis) compared to those obtained from the original items not adjusted for DIF but anchored by DIF-free item calibrations from the DIF-adjusted scale (x-axis).<p><b>Copyright information:</b></p><p>Taken from "Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)"</p><p>http://www.hqlo.com/content/6/1/47</p><p>Health and Quality of Life Outcomes 2008;6():47-47.</p><p>Published online 2 Jul 2008</p><p>PMCID:PMC2483964.</p><p></p

Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)-4

N the common logit metric (negative values = less illness-related distress) following adjustment for DIF.<p><b>Copyright information:</b></p><p>Taken from "Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)"</p><p>http://www.hqlo.com/content/6/1/47</p><p>Health and Quality of Life Outcomes 2008;6():47-47.</p><p>Published online 2 Jul 2008</p><p>PMCID:PMC2483964.</p><p></p

Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)-1

D 24 ("in pain when sitting"; panel B) following scale adjustment for cross-diagnostic DIF. Black dots represent the observed responses in the sample as divided into six class intervals according to their levels of illness-related distress, indicated by red marks on the x-axis.<p><b>Copyright information:</b></p><p>Taken from "Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)"</p><p>http://www.hqlo.com/content/6/1/47</p><p>Health and Quality of Life Outcomes 2008;6():47-47.</p><p>Published online 2 Jul 2008</p><p>PMCID:PMC2483964.</p><p></p