The World Health Organization (WHO). World Health Organization supports global effort to relieve chronic pain. Available at:http://www.who.int/mediacentre/news/releases/2004/pr70/en/index.html.Accessed September 22, 2014.
Miller LR, Cano A. Comorbid chronic pain and depression: who is at risk? J Pain. 2009;10:619–27.
Gureje O, von Korff M, Simon GE, Gater R. Persistent pain and well-being: a World Health Organization study in primary care. JAMA. 1998;280:147–51.
Breivik H, Collet B, Ventafridda V, Cohen R, Gallacher D. Survey of chronic pain in Europe: Prevalence, impact on daily life, and treatment. Eur J Pain. 2006;10:287–333.
Schwartz L, Slater MA, Birchler GR. The role of pain behaviors in the modulation of marital conflict in chronic pain couples. Pain. 1996;65:227–33.
Meletiche DM, Lofland JH, Young WB. Quality-of-life differences between patients with episodic and transformed migraine. Headache. 2001;41:573–8.
Soares JJF, Jablonska B. Psychosocial experiences among primary care patients with and without musculoskeletal pain. Eur J Pain. 2004;8:79–89.
Tenhunen K, Elander J. A qualitative analysis of psychological processes mediating quality of life impairments in chronic daily headache. J Health Psychol. 2005;10:397–407.
Blyth FM, March LM, Brnabic AJM, Jorm LR, Williamson M, Cousins MJ. Chronic pain in Australia: a prevalence study. Pain. 2001;89:127–34.
Becker N, Bondegaard Thomsen A, Olsen AK, Sjogren P, Bech P, Eriksen J. Pain epidemiology and health related quality of life in chronic non-malignant pain patients referred to a Danish multidisciplinary pain center. Pain. 1997;73:393–400.
Van Koppenhagen CF, Post MW, van der Woude LH, de Witte LP, van Asbeck FW, de Groot S. Changes and determinants of life satisfaction after spinal cord injury: a cohort study in the Netherlands. Arch Phys Med Rehabil. 2008;89:1733–40.
Wallin MKM, Raak RI. Quality of life in subgroups of individuals with whiplash associated disorders. Eur J Pain. 2008;12:842–9.
Zanocchi M, Maero B, Nicola E, Martinelli E, Luppino A, Gonella M, et al. Chronic pain in a sample of nursing home residents: prevalence, characteristics, influence on quality of life (QoL). Arch Gerontol Geriatr. 2008;47:121–8.
Hoffman BM, Papas RK, Chatkoff DK, Kerns RD. Meta-analysis of psychological interventions for chronic low back pain. Health Psychol. 2007;26:1–9.
Gatchel RJ, Peng YB, Peters ML, Fuchs PN, Turk DC. The biopsychosocial approach to chronic pain: scientific advances and future directions. Psychol Bull. 2007;133:581–624.
Morley S. Process and change in cognitive behaviour therapy for chronic pain. Pain. 2004;109:205–6.
Williams AC, Eccleston C, Morley S. Psychological therapies for the management of chronic pain (excluding headache) in adults (Review). Cochrane Database Syst Rev. 2013. doi:10.1002/14651858.CD007407.pub3.
Hayes SC, Louma JB, Bond FW, Masuda A, Lillis J. Acceptance and commitment therapy: model, processes and outcomes. Behav Res Ther. 2006;44:1–25.
Veehof MM, Oskam MJ, Schreurs KMG, Bohlmeijer ET. Acceptance-based interventions for the treatment of chronic pain: a systematic review and meta-analysis. Pain. 2011;152:533–42.
American Psychological Association (APA). Evidence of psychological treatments. http://www.div12.org/PsychologicalTreatments/treatments/chronicpain_act.html. Accessed 22 Sep 2014
Hayes SC, Strosahl KD, Wilson KG. Acceptance and commitment therapy: the process and practice of mindful change. 2nd ed. New York: The Guilford Press; 2012.
McCracken LM. Learning to live with the pain: acceptance of pain predicts adjustment in persons with chronic pain. Pain. 1998;74:21–7.
Viane I, Crombez G, Eccleston C, Devulder J, De Corte W. Acceptance of the unpleasant reality of chronic pain: effects upon attention to pain and engagement with daily activities. Pain. 2004;112:282–8.
Mason VL, Mathias B, Skevington SM. Accepting low back pain: is it related to a good quality of life? Clin J Pain. 2008;24:22–9.
McCracken LM, Carson JW, Eccleston C, Keefe FJ. Acceptance and change in the context of chronic pain. Pain. 2004;109:4–7.
McCracken LM, Eccleston C. A prospective study of pain and patient functioning with chronic pain. Pain. 2005;118:164–9.
Viane I, Crombez G, Eccleston C, Poppe C, Devulder J, Van Houdenhove B, et al. Acceptance of pain is an independent predictor of mental well-being in patients with chronic pain: empirical evidence and reappraisal. Pain. 2003;106:65–72.
Vowles KE, McCracken LM, Eccleston C. Patient functioning and catastrophizing in chronic pain: the mediating effects of acceptance. Health Psychol. 2008;27 Suppl 2:136–43.
Frazier PA, Tix AP, Barron KE. Testing moderator and mediator effects in counseling psychology research. J Couns Psychol. 2004;51:115–34.
Hayes AF. Introduction to mediation, moderation and conditional process analysis: a regression-based approach. New York: The Guilford Press; 2013.
McCracken LM, Gutiérrez-Martínez O. Processes of change in psychological flexibility in an interdisciplinary group-based treatment for chronic pain based on acceptance and commitment therapy. Behav Res Ther. 2011;49:267–74.
Vowles KE, Witkiewitz K, Sowden G, Ashworth J. Acceptance and commitment therapy for chronic pain: evidence of mediation and clinically significant change following an abbreviated interdisciplinary rehabilitation program. J Pain. 2014;15:101–13.
Wicksell RK, Olsson GL, Hayes SC. Psychological flexibility as a mediator of improvement in acceptance and commitment therapy for patients with chronic pain following whiplash. Eur J Pain. 2010;14:e1–e11.
Wicksell RK, Olsson GL, Hayes SC. Mediators of change in acceptance and commitment therapy for pediatric chronic pain. Pain. 2011;152:2792–801.
Thorsell J, Finnes A, Dahl J, Lundgren T, Gybrant M, Gordh T, et al. A comparative study of 2 manual-based self-help interventions, acceptance and commitment therapy and applied relaxation, for persons with chronic pain. Clin J Pain. 2011;27:716–23.
Cuijpers P, Donker T, van Straten A, Li J, Andersson G. Is guided self-help as effective as face-to-face psychotherapy for depression and anxiety disorders? A systematic review and meta-analysis of comparative outcome studies. Psychol Med. 2010;40:1943–57.
Mohr DC, Ho J, Duffecy J, Reifler D, Sokol L, Burns MN, et al. Effect of telephone-administered vs face-to-face cognitive behavioral therapy on adherence to therapy and depression outcomes among primary care patients: a randomized trial. JAMA. 2012;307:2278–85.
Mohr DC, Likosky W, Bertagnolli A, Goodkin DE, van der Wende J, Dwyer P, et al. Telephone-administered cognitive–behavioral therapy for the treatment of depressive symptoms in multiple sclerosis. J Consult Clin Psychol. 2000;68:356–61.
Linton SJ, Götestam KG. A controlled study of the effects of applied relaxation and applied relaxation plus operant procedures in the regulation of chronic pain. Br J Clin Psychol. 1984;23:291–9.
Ström L, Pettersson R, Andersson G. A controlled trial of self-help treatment of recurrent headache conducted via the Internet. J Consult Clin Psychol. 2000;68:722–7.
Dahl J, Lundgren T. Living beyond your pain: using acceptance and commitment therapy to ease chronic pain. Oakland: New Harbinger Publications; 2006.
Öst LG. Tillämpad avslappning: manual till en beteendeterapeutisk coping-teknik. Uppsala: Universitetstryckeriet; 2006.
McCracken LM, Vowles KE, Eccleston C. Acceptance of chronic pain: component analysis and a revised assessment method. Pain. 2004;107:159–66.
Diener E, Emmons RA, Larsen EJ, Griffin S. The satisfaction with life scale. J Pers Assess. 1985;49:71–5.
Hultell D, Gustavsson JP. A psychometric evaluation of the satisfaction with life scale in a Swedish nationwide sample of university students. Personal Individ Differ. 2008;44:1070–9.
Pavot W, Diener E. Review of the satisfaction with life scale. Psychol Assess. 1993;5:164–72.
Pavot W, Diener E, Colvin CR, Sandvik E. Further validation of the satisfaction with life scale: evidence for the cross-method convergence of well-being measures. J Pers Assess. 1991;57:149–61.
Linton SJ. Manual for the Örebro musculoskeletal pain screening questionnaire: the early identification of patients at risk for chronic pain. Närke Tryck: Örebro; 1999.
Gabel CP, Melloh M, Yelland M, Burkett B, Roiko A. Predictive ability of a modified Örebro musculoskeletal pain questionnaire in an acute/subacute low back pain working population. Eur Spine J. 2011;20:449–57.
Linton SJ, Boersma K. Early identification of patients at risk of developing a persistent back problem: the predictive validity of the Örebro musculoskeletal pain questionnaire. Clin J Pain. 2003;19:80–6.
Westman A, Linton SJ, Öhrvik J, Wahlén P, Leppert J. Do psychosocial factors predict disability and health at a 3-year follow-up for patients with non-acute musculoskeletal pain? A validation of the Örebro musculoskeletal pain screening questionnaire. Eur J Pain. 2008;12:641–9.
Zigmond AS, Snaith RP. The Hospital Anxiety and Depression Scale. Acta Psychiatr Scand. 1983;67:361–70.
Lisspers J, Nygren A, Söderman E. Hospital Anxiety and Depression Scale (HADS): some psychometric data for a Swedish sample. Acta Psychiatr Scand. 1997;96:281–6.
Ferreira-Valente MA, Pais-Ribeiro JL, Jensen MP. Validity of four pain intensity rating scales. Pain. 2011;152:2399–404.
Williamson A, Hoggart B. Pain: a review of three commonly used pain rating scales. J Clin Nurs. 2005;14:798–804.
IBM SPSS Statistics. Version 20.0.0. Armonk: IBM Corporation; 2011.
Baron RM, Kenny DA. The moderator-mediator variable distinction in social psychological research: conceptual, strategic, and statistical considerations. J Pers Soc Psychol. 1986;51:1173–82.
Judd CM, Kenny DA. Process analysis: estimating mediation in treatment evaluations. Eval Rev. 1981;5:602–19.
MacKinnon DP, Fairchild AJ, Fritz MS. Mediation analysis. Annu Rev Psychol. 2007;58:593–614.
MacKinnon DP, Lockwood CM, Hoffman JM, West SG. Sheets V.A Comparison of methods to test mediation and other intervening variable effects. Psychol Methods. 2002;7:83–104.
Preacher KJ, Hayes AF. SPSS and SAS procedures for estimating indirect effects in simple mediation models. Behav Res Methods Instrum Comput. 2004;36:717–31.
Preacher KJ, Hayes AF. Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behav Res Methods. 2008;40:879–91.
Cerin E, MacKinnon DP. A commentary on current practice in mediating variable analysis in behavioral nutrition and physical activity. Public Health Nutr. 2009;12:1182–8.
Rucker DD, Preacher KJ, Tormala ZL, Petty RE. Mediation analysis in social psychology: current practices and new recommendations. Soc Personal Psychol Compass. 2011;5:359–71.
Shrout PE, Bolger N. Mediation in experimental and nonexperimental studies: new procedures and recommendations. Psychol Methods. 2002;7:422–45.
Zhao X, Lynch JG, Chen Q. Reconsidering Baron and Kenny: myths and truths about mediation analysis. J Consum Res. 2010;37:197–206.
Fritz MS, MacKinnon DP. Required sample size to detect the mediated effect. Psychol Sci. 2007;18:233–9.
Kazdin AE. Mediators and mechanisms of change in psychotherapy research. Annu Rev Clin Psychol. 2007;3:1–27.
Cuijpers P. Bibliotherapy in unipolar depression: a meta-analysis. J Behav Ther Exp Psychiatry. 1997;28:139–47.