Physical exercise as non-pharmacological treatment of chronic pain: Why and when.

Best Practice & Research Clinical Rheumatology. 29: 120-130Bartkowska W Samborski W Mojs E.

Cognitive functions, emotions and personality in woman with fibromyalgia.

Anthropologischer Anzeiger; Bericht uber die biologisch-anthropologische Literatur. 75: 271-277Bucourt E Martaille V Mulleman D Goupille P Joncker-Vannier I Huttenberger B Reveillere C Courtois R.

Comparison of the Big Five personality traits in fibromyalgia and other rheumatic diseases.

Joint Bone Spine. 84: 203-207Bugliari D Campbell N Chan C Hayden O Hayes J Hurd M Karabatakis A Main R Mallett J McCullough C Meijer E Moldoff M Pantoja P Rohwedder S St.Clair P.

RAND HRS Longitudinal File 2016 (V1) Documentation.

()Bürgin D Boonmann C Schmid M Tripp P O'Donovan A

Fact or artefact? Childhood adversity and adulthood trauma in the U.S. population-based Health and Retirement Study.

Eur J Psychotraumatol. 111721146

Social support, social strain, loneliness, and well-being among older adults.

Journal of Social and Personal Relationships. 31: 141-161Croy I Springborn M Lotsch J Johnston AN Hummel T.

Agreeable smellers and sensitive neurotics–correlations among personality traits and sensory thresholds.

PloS one. 6: e18701Dahlhamer J Lucas J Zelaya C Nahin R Mackey S DeBar L Kerns R Von Korff M Porter L Helmick C.

Prevalence of Chronic Pain and High-Impact Chronic Pain Among Adults - United States, 2016.

MMWR. Morbidity and mortality weekly report. 67: 1001-1006Dantzer R Cohen S Russo SJ Dinan TG.

Resilience and immunity.

Brain Behav Immun. 74: 28-42Docking RE Fleming J Brayne C Zhao J Macfarlane GJ Jones GT

Cambridge City over-75s Cohort Study c. Epidemiology of back pain in older adults: prevalence and risk factors for back pain onset.

Rheumatology (Oxford). 50: 1645-1653

Effects of age on temporal summation and habituation of thermal pain: clinical relevance in healthy older and younger adults.

The journal of pain: official journal of the American Pain Society. 2: 307-317Edwards RR Fillingim RB Ness TJ.

Age-related differences in endogenous pain modulation: a comparison of diffuse noxious inhibitory controls in healthy older and younger adults.

Pain. 101: 155-165

Physical and Psychosocial Factors in the Prevention of Chronic Pain in Older Age.

The journal of pain: official journal of the American Pain Society. 19: 1385-1391Finan PH Goodin BR Smith MT.

The association of sleep and pain: an update and a path forward.

The journal of pain: official journal of the American Pain Society. 14: 1539-1552

The economic costs of pain in the United States.

J Pain. 13: 715-724

Sociodemographic disparities in chronic pain, based on 12-year longitudinal data.

Pain. 158: 313-322Hayden JA Wilson MN Riley RD Iles R Pincus T Ogilvie R.

Individual recovery expectations and prognosis of outcomes in non-specific low back pain: prognostic factor review.

Cochrane Database Syst Rev. ()Health and Retirement Study

Sample sizes and response rates.

()

Technical description of the health and retirement study sample design.

A solution to the problem of separation in logistic regression.

Statistics in Medicine. 21: 2409-2419Hughes ME Waite LJ Hawkley LC Cacioppo JT.

A Short Scale for Measuring Loneliness in Large Surveys: Results From Two Population-Based Studies.

Research on aging. 26: 655-672

The severity of chronic pediatric pain: an epidemiological study.

The journal of pain: official journal of the American Pain Society. 9: 226-236Interagency Pain Research Coordinating Committee

National pain strategy: a comprehensive population health-level strategy for pain.

()Jacqui S Lindsay HR Gwenith GF Amanda S David RW

HRS Psychosocial and Lifestyle Questionnaire 2006-2016.

()Janevic MR McLaughlin SJ Heapy AA Thacker C Piette JD.

Racial and Socioeconomic Disparities in Disabling Chronic Pain: Findings From the Health and Retirement Study.

The journal of pain: official journal of the American Pain Society. 18: 1459-1467Jetté M Sidney K Blümchen G.

Metabolic equivalents (METS) in exercise testing, exercise prescription, and evaluation of functional capacity.

Clin Cardiol. 13: 555-565Koffel E McCurry SM Smith MT Vitiello MV.

Improving pain and sleep in middle-aged and older adults: the promise of behavioral sleep interventions.

Pain. 160: 529-534Krause N Shaw BA Cairney J.

A descriptive epidemiology of lifetime trauma and the physical health status of older adults.

Psychol Aging. 19: 637-648

The Midlife Development Inventory (MIDI) Personality Scales: Scale construction and scoring.

Technical report, ()

The sense of control as a moderator of social class differences in health and well-being.

Journal of personality and social psychology. 74: 763-773Landmark T Dale O Romundstad P Woodhouse A Kaasa S Borchgrevink PC.

Development and course of chronic pain over 4 years in the general population: The HUNT pain study.

Eur J Pain. 22: 1606-1616Landmark T Romundstad P Butler S Kaasa S Borchgrevink P.

Development and course of chronic widespread pain: the role of time and pain characteristics (the HUNT pain study).

Pain. 160: 1976-1981Larsson C Hansson EE Sundquist K Jakobsson U.

Chronic pain in older adults: prevalence, incidence, and risk factors.

Scandinavian journal of rheumatology. 46: 317-325Lautenbacher S Kunz M Strate P Nielsen J Arendt-Nielsen L.

Age effects on pain thresholds, temporal summation and spatial summation of heat and pressure pain.

Pain. 115: 410-418Lewandowski AS Palermo TM De la Motte S Fu R.

Temporal daily associations between pain and sleep in adolescents with chronic pain versus healthy adolescents.

Pain. 151: 220-225Menefee LA Cohen MJ Anderson WR Doghramji K Frank ED Lee H.

Sleep disturbance and nonmalignant chronic pain: a comprehensive review of the literature.

Pain medicine (Malden, Mass.). 1: 156-172Naugle KM Ohlman T Naugle KE Riley ZA Keith NR.

Physical activity behavior predicts endogenous pain modulation in older adults.

Pain. 158: 383-390Nicklett EJ Chen J Xiang X Abrams LR Sonnega AJ Johnson KE Cheng J Assari S.

Associations Between Diagnosis with Type 2 Diabetes and Changes in Physical Activity among Middle-Aged and Older Adults in the United States.

Innov Aging. 4: igz048Nordeman L Thorselius L Gunnarsson R Mannerkorpi K.

Predictors for future activity limitation in women with chronic low back pain consulting primary care: a 2-year prospective longitudinal cohort study.

BMJ open. 7e013974

Akaike's information criterion in generalized estimating equations.

Biometrics. 57: 120-125Pitcher MH Von Korff M Bushnell MC Porter L.

Prevalence and Profile of High-Impact Chronic Pain in the United States.

The journal of pain: official journal of the American Pain Society. 20: 146-160Puterman E Gemmill A Karasek D Weir D Adler NE Prather AA Epel ES.

Lifespan adversity and later adulthood telomere length in the nationally representative US Health and Retirement Study.

Proc Natl Acad Sci U S A. 113: E6335-e6342

Joint modeling of missing data due to non-participation and death in longitudinal aging studies.

Stat Med. 29: 2260-2268

UCLA Loneliness Scale (Version 3): reliability, validity, and factor structure.

Journal of personality assessment. 66: 20-40Scheier MF Carver CS Bridges MW.

Distinguishing optimism from neuroticism (and trait anxiety, self-mastery, and self-esteem): a reevaluation of the Life Orientation Test.

Journal of personality and social psychology. 67: 1063-1078Serlin RC Mendoza TR Nakamura Y Edwards KR Cleeland CS.

When is cancer pain mild, moderate or severe? Grading pain severity by its interference with function.

Pain. 61: 277-284Smith D Wilkie R Uthman O Jordan JL McBeth J.

Chronic pain and mortality: a systematic review.

PloS one. 9: e99048Smith MT Haythornthwaite JA.

How do sleep disturbance and chronic pain inter-relate? Insights from the longitudinal and cognitive-behavioral clinical trials literature.

Sleep Medicine Reviews. 8: 119-132

Lifetime traumas and mental health: The significance of cumulative adversity.

Journal of health and social behavior. : 360-376van Hecke O Torrance N Smith BH.

Chronic pain epidemiology and its clinical relevance.

Br J Anaesth. 111: 13-18Von Korff M Jensen MP Karoly P.

Assessing global pain severity by self-report in clinical and health services research.

Spine. 25: 3140-3151Von Korff M Miglioretti DL.

A prognostic approach to defining chronic pain.

Pain. 117: 304-313Von Korff M Ormel J Keefe FJ Dworkin SF.

Grading the severity of chronic pain.

Pain. 50: 133-149

Social Support and Strain from Partner, Family, and Friends: Costs and Benefits for Men and Women in Adulthood.

Journal of Social and Personal Relationships. 17: 5-30Wertli MM Eugster R Held U Steurer J Kofmehl R Weiser S.

Catastrophizing—a prognostic factor for outcome in patients with low back pain: a systematic review.

The Spine Journal. 14: 2639-2657Whitlock EL Diaz-Ramirez LG Glymour MM Boscardin WJ Covinsky KE Smith AK.

Association Between Persistent Pain and Memory Decline and Dementia in a Longitudinal Cohort of Elders.

JAMA Intern Med. 177: 1146-1153

World Health Organization: Ageing and life-course. Available at: https://www.who.int/ageing/healthy-ageing/en/ Accessed May 22, 2020