Abbreviations and Acronyms DDPRQ-10 (Difficult Doctor-Patient Relationship Questionnaire) HADS (hospital anxiety and depression scale) PTSD (posttraumatic stress disorder) SSS-8 (somatic symptom scale) Get full text access Log in, subscribe or purchase for full access. References 1. Porcerelli, J.H. ∙ Murdoch, W. ∙ Morris, P. ... The Patient-Doctor Relationship Questionnaire (PDRQ-9) in primary care: a validity study J Clin Psychol Med Settings. 2014; 21:291-296 2.