Interventions for patients and caregivers to improve knowledge of sickle cell disease and recognition of its related complications

Cochrane Database of Systematic Reviews

Volumn 2016, Issue 10, 2016, Pages

  Asnani, Monika R ^a   Quimby, Kim R ^a   Bennett, Nadia R ^a   Francis, Damian K ^a  

^a UNIVERSITY OF THE WEST INDIES   (Jamaica)

Author keywords

[No Author keywords available]

Indexed keywords

BEHAVIOR DISORDER; CAREGIVER SUPPORT; CLINICAL EFFECTIVENESS; COPING BEHAVIOR; DEPRESSION; EMOTIONAL DISORDER; FAMILY RELATION; HEALTH CARE UTILIZATION; HUMAN; KNOWLEDGE; META ANALYSIS; MORBIDITY; OUTCOME ASSESSMENT; PATIENT EDUCATION; PRIORITY JOURNAL; PSYCHOEDUCATION; RANDOMIZED CONTROLLED TRIAL (TOPIC); REVIEW; SAFETY; SELF CONCEPT; SICKLE CELL ANEMIA; SYSTEMATIC REVIEW; ADOLESCENT; ADULT; ATTITUDE TO HEALTH; CAREGIVER; CHILD; COMPLICATION; EDUCATION;

ADOLESCENT; ADULT; ANEMIA, SICKLE CELL; CAREGIVERS; CHILD; HEALTH KNOWLEDGE, ATTITUDES, PRACTICE; HUMANS; PATIENT EDUCATION AS TOPIC; RANDOMIZED CONTROLLED TRIALS AS TOPIC;

EID: 84990070357     PISSN: None     EISSN: 1469493X     Source Type: Journal    
DOI: 10.1002/14651858.CD011175.pub2     Document Type: Review

References (99)

1. Barakat LP, Schwartz L, Simon K, Radcliffe J. Coping mediates the association of pain with depression in adolescents with sickle cell disease [abstract]. Proceedings of the 29th Annual Meeting of the National Sickle Cell Disease Program. 2006:187.
2. Barakat LP, Schwartz LA, Salamon KS, Radcliffe J. A family-based randomized controlled trial of pain intervention for adolescents with sickle cell disease. Journal of Pediatric Hematology/Oncology 2010;32(7):540.
3. Bennett KY, Simon K, Barakat LP, Radcliffe J. Factors associated with disease knowledge in adolescence [abstract]. Proceedings of the 29th Annual Meeting of the National Sickle Cell Disease Program. 2006:190.
4. Boyd RC, Barakat LP, Thigpen NR, Radcliffe J. The development of a brief psychoeducational intervention for adolescents with sickle cell [abstract]. Proceedings of the 27th Annual Meeting of the National Sickle Cell Disease Program. 2004:84.
5. Radcliffe J, Barakat LP, Boyd R, Thigpen N. Sickle cell disease knowledge and self-efficacy are associated among adolescents and caregivers [abstract]. Proceedings of the 28th Annual Meeting of the National Sickle Cell Disease Program. 2005:119.
6. Radcliffe J, Barakat LP, Boyd RC, Thigpen N, Benton TD, Kazak AE. Controlled pain intervention for adolescents with sickle cell disease [abstract]. Proceedings of the 27th Annual Meeting of the National Sickle Sell Disease Program. 2004:57.
7. Schwartz L, Radcliffe J, Barakat LP. Pain-related predictors of parent and family functioning in teens with sickle cell disease [abstract]. Proceedings of the 29th Annual Meeting of the National Sickle Cell Disease Program. 2006:238.
8. Broome ME, Maikler V, Kelber S, Bailey P, Lea G. An intervention to increase coping and reduce health care utilization for school-age children and adolescents with sickle cell disease. Journal of National Black Nurses' Association: JNBNA 2001;12(2):6-14.
9. Daniel LC, Li Y, Smith K, Tarazi R, Robinson MR, Patterson CA, et al. Lessons learned from a randomized controlled trial of a family-based intervention to promote school functioning for school-age children with sickle cell disease. Journal of Pediatric Psychology 2015;40(10):1085-94. [CENTRAL: 1102193; CRS: 5500135000001413; PUBMED: 26136404]
10. Gil KM, Carson JW, Sedway JA, Porter LS, Schaeffer JJW, Orringer E. Follow-up of coping skills training in adults with sickle cell disease: analysis of daily pain and coping practice diaries. Health Psychology 2000;19(1):85-90.
11. Gil KM, Wilson JJ, Abrams MA, Orringer E, Clark WC, Janal MN. Coping skills training in adults with sickle cell disease: Post-intervention and 3-month follow-up results [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 1996:8.
12. Gil KM, Wilson JJ, Edens JL, Webster DA, Abrams MA, Orringer E, et al. Effects of cognitive coping skills training on coping strategies and experimental pain sensitivity in African American adults with sickle cell disease. Health Psychology 1996;15(1):3.
13. Gil KM, Anthony KK, Carson JW, Redding-Lallinger R, Daeschner CW, Ware RE. Daily coping practice predicts treatment effects in children with sickle cell disease. Journal of Pediatric Psychology 2001;26(3):163-73.
14. Gil KM, Wilson JJ, Edens JL, Workman E, Ready J, Sedway J, et al. Cognitive coping skills training in children with sickle cell disease pain. International Journal of Behavioral Medicine 1997;4(4):364-77.
15. Hazzard A, Celano M, Collins M. Effects of STARBRIGHT World on knowledge, social support, and coping in hospitalized children with sickle cell disease and asthma. Children's Health Care 2002;31(1):69-86.
16. Kaslow NJ, Collins MH, Brown F, Baskin M, Griffith J, Hollins LD, et al. Psychoeducational intervention for pediatric sickle cell disease (SCD) increases disease knowledge [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 1997:225.
17. Kaslow NJ, Collins MH, Rashid FL, Baskin ML, Griffith JR, Hollins L, et al. The efficacy of a pilot family psychoeducational intervention for pediatric sickle cell disease (SCD). Families, Systems, & Health 2000;18(4):381.
18. Ketchen B, Hazzard A, Lassiter S, Barber N, Armistead L, Mentz R, et al. STARBRIGHT World: A pilot study of a home-based sickle cell psychoeducational intervention. Children's Health Care 2006;35(4):321-38.
19. Kinlow M, Hazzard A, Adams F, Batts B. Computer based interactive education programs for hospitalized children with asthma and sickle cell disease [abstract]. Respiratory Care. 2001; Vol. 46:1112.
20. Koontz K, Short AD, Kalinyak K, Noll RB. A randomized, controlled pilot trial of a school intervention for children with sickle cell anemia. Journal of Pediatric Psychology 2004;29(1):7-17.
21. Lemanek KL, Ranalli M, Parsons E, DeJacimo L. Effectiveness of auxiliary sickle cell disease management guidelines of children hospitalized with pain [abstract]. Proceedings of the 29th Annual Meeting of the National Sickle Cell Disease Program. 2006:134.
22. Schatz J, Schlenz AM, McClellan CB, Puffer ES, Hardy S, Pfeiffer M, et al. Changes in coping, pain, and activity after cognitive-behavioral training: a randomized clinical trial for pediatric sickle cell disease using smartphones. Clinical Journal of Pain 2015;31(6):536-47. [CENTRAL: 1068102; CRS: 5500133000000033; GR:: F31 HL108582/HL/NHLBI NIH HHS/United States; JID:: 8507389; NLM:: PMC4424076 [Available on 06/01/16]; OID: [Other ID]: NLM: NIHMS639485 [Available on 06/01/16]; PMCID:: PMC4424076; PUBMED: 25503599; R21: HL092336/HL/NHLBI NIH HHS/United States; T32: GM081740/GM/NIGMS NIH HHS/United States]
23. Thomas V. Cognitive behaviour therapy for the management of sickle cell disease pain: an evaluation of a community based intervention [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 1999:230.
24. Thomas V. Cognitive behavioural therapy for the management of pain in sickle cell disease [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 1997:38.
25. Thomas V. Cognitive behavioural therapy in pain management for sickle cell disease. International Journal of Palliative Nursing 2000;6(9):434-42.
26. Thomas V. The longitudinal effects of cognitive behaviour therapy for the management of sick cell disease pain [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 2000:15.
27. Thomas V, Dixon A, Milligan P, Thomas N. Cognitive-behaviour therapy for the management of sickle cell disease pain: An evaluation of a community-based intervention. British Journal of Health Psychology 1999;4(3):209-29.
28. Applegate H, Webb PM, Elkin TD, Neul SKT, Drabman RS. Improving parent participation at pediatric diabetes and sickle cell appointments using a brief intervention. Children's Health Care 2003;32(2):125-36.
29. Barakat LP, Schwartz LA, Simon K, Radcliffe J. Negative thinking as a coping strategy mediator of pain and internalizing symptoms in adolescents with sickle cell disease. Journal of Behavioral Medicine 2007;30(3):540-7.
30. Boroffice OB. Self-help in sickle-cell disease in Nigeria. Health Promotion International 1991;6(4):241-6.
31. Carpenter S, Barakat LP, Radcliffe J. Health education in pediatric sickle cell disease: facilitating increased knowledge by using games [abstract]. Proceedings of the 35th Anniversary Convention of the National Sickle Cell Disease Program. 2007:347.
32. Chernoff RG, Ireys HT, DeVet KA, Kim YJ. A randomized controlled trial of a community-based support program for families of children with chronic illnesses: pediatric outcomes. Archies of Pediatrics and Adolescents Medicine 2002;156(6):533-9.
33. Daly B, Kral MC, Brown RT, Elkin D, Madan-Swain A, Mitchell M, et al. Ameliorating attention problems in children with sickle cell disease: a pilot study of methylphenidate. Journal of Developmental and Behavioral Pediatrics 2012;33(3):244-51. [Record 14: 6125 ]
34. Ireys HT, Chernoff R, DeVet KA, Kim Y. Maternal outcomes of a randomized controlled Trial of a community-based support Program for families of children with chronic illnesses. Archies of Pediatrics and Adolescents Medicine 2001;155(7):771-7.
35. Jenerette CM, Brewer CA, Edwards LJ, Mishel MH, Gil KM. An intervention to decrease stigma in young adults with sickle cell disease. Western Journal of Nursing Research 2014;36(5):599-619. [CENTRAL: 1068104; CRS: 5500133000000035; GR:: K23NR011061/NR/NINR NIH HHS/United States; JID:: 7905435; PUBMED: 24309381; UL1TR000083/TR/NCATS: NIH HHS/United States]
36. Kaslow NJ, Collins MH, Loundy MR, Brown F, Hollins LD, Eckman J. Empirically validated family interventions for pediatric psychology: sickle cell disease as an exemplar. Journal of Pediatric Psychology 1997;22(2):213-27.
37. King AA, Whit A, Armstrong M, McKinstry R, Noetzel M, DeBaun M. An educational remediation program for children with sickle cell disease and cerebral infarcts is feasible and effective [abstract]. Proceedings of the 29th Annual Meeting of the National Sickle Cell Disease Programme. 2006.
38. King AA, White DA, McKinstry RC, Noetzel M, Debaun MR. A pilot randomized education rehabilitation trial is feasible in sickle cell and strokes. Neurology 2007;68(23):2008-11. [CENTRAL: 700281; CRS: 5500050000000263; PUBMED: 17548550]
39. Lemanek KL, Ranalli M, Lukens C. A randomized controlled trial of massage therapy in children with sickle cell disease. Journal of Pediatric Psychology 2009;34(10):1091-6.
40. Mendolia SM, Freed N. Sickle Cell Disease - a comprehensive education for the adult patient [abstract]. Proceedings of the 18th Annual Meeting of the National Sickle Cell Disease Programme. 1993.
41. Oyeku SO, Feldman HA, Ryan K, Muret-Wagstaff S, Neufeld EJ. Clinician knowledge and confidence about newborn screening for sickle cell disease: randomized assessment of educational strategies [abstract]. Proceedings of the 28th Annual Meeting of the National Sickle Cell Disease Program. 2005.
42. Oyeku SO, Feldman HA, Ryan K, Muret-Wagstaff S, Neufeld EJ. Primary care provider knowledge and confidence about newborn screening for sickle cell disease [abstract]. Proceedings of the Pediatric Academic Societies Annual Meeting. 2005.
43. Oyeku SO, Feldman HA, Ryan K, Muret-Wagstaff S, Neufeld EJ. Primary care clinicians' knowledge and confidence about newborn screening for sickle cell disease: randomized assessment of educational strategies. Journal of the National Medical Association 2010;102(8):676-82.
44. Radcliffe J, Barakat L, Simon K, Schwartz LA, Ohene-Frempong K. Attitude counts: self-efficacy, negative thinking and health care costs in adolescent sickle cell disease within the teens taking control study [abstract]. Proceedings of the 35th Anniversary Convention of the National Sickle Cell Disease Program and the Sickle Cell Disease Association of America; 2007 Sep 17-22; Washington DC, USA. 2007:93, Abstract No: 79. [CRS: 5500125000000683; ]
45. Robinson GA, Devane J. Impact of home health care on sickle cell disease patients [abstract]. Proceedings of the National Sickle Cell Disease Program Annual Meeting Conference. 1990:113.
46. Schatz J, Robinson J, Puffer E. Promoting school success following childhood stroke: standard school advocacy versus a neuropsychologically-informed team planning approach [abstract]. Proceedings of the 27th Annual Meeting of the National Sickle Cell Disease Program. 2004:180.
47. Thomas LS, Stephenson N, Swanson M, Jesse DE, Brown S. A pilot study: the effect of healing touch on anxiety, stress, pain, pain medication usage, and physiological measures in hospitalized sickle cell disease adults experiencing a vaso-occlusive pain episode. Journal of Holistic Nursing 2013;31(4):234-47. [CENTRAL: 1068103; CRS: 5500133000000034; JID:: 8506709; PUBMED: 23817144]
48. Wilkie DJ, Gallo AM, Yao Y, Molokie RE, Stahl C, Hershberger PE, et al. Reproductive Health CHOICES for young adults with sickle cell disease or trait: randomized controlled trial immediate post test effects. Nursing Research 2013;62(5):352-61.
49. Yang YM, Andrews S, Peterson R, Shah A, Cepeda M. Prenatal sickle cell screening education effect on the follow-up rates of infants with sickle cell trait. Patient Education and Counselling 2000;39(2-3):185-9.
50. Yerys BE, White DA, Salorio CF, McKinstry R, Moinuddin A, DeBaun M. Memory strategy training in children with cerebral infarcts related to sickle cell disease. Journal of Pediatic Hematology/Oncology 2003;25(6):495-8.
51. Bhogte C, Nickel R, Hsu L, Meier E. Pilot intervention to improve sickle cell disease transition with a DVD and website shows education of adolescents should occur in the outpatient clinic [abstract]. Pediatric Blood & Cancer 2013;60:S27-8. [CENTRAL: 1027515; CRS: 5500050000000264; EMBASE: 71047861]
52. Abidin RR. Parenting Stress Index (PSI). Lutz, Florida, USA: Psychological Assessment Resources Inc, 1995.
53. Altman DG, Bland JM. Statistics Notes: Detecting skewness from summary information. BMJ 1996;313(7066):1200.
54. Anie KA. Psychological complications in sickle cell disease. British Journal of Haematology 2005;129(6):723-9.
55. Anie KA, Green J. Psychological therapies for sickle cell disease and pain. Cochrane Database of Systematic Reviews 2015, Issue 5. [DOI: 10.1002/14651858.CD001916.pub3]
56. Armstrong FD, Lemanek KL. Sickle Cell Knowledge Questionnaire. University of Miami School of Medicine 1993.
57. Ataga KI, Orringer EP. Renal abnormalities in sickle cell disease. American Journal of Hematology 2000;63(4):205-11.
58. Barlow J, Smailagic N, Ferriter M, Bennett C, Jones H. Group-based parent-training programmes for improving emotional and behavioural adjustment in children from birth to three years old. Cochrane Database of Systematic Reviews 2010, Issue 3. [DOI: 10.1002/14651858.CD003680.pub2]
59. Begg C, Cho M, Eastwood S, et al. Improving the quality of reporting of randomized controlled trials: The consort statement. JAMA 1996;276(8):637-9.
60. Bhatt K, Reid ME, Lewis NA, Asnani MR. Knowledge and health beliefs of Jamaican adolescents with sickle cell disease. Pediatric Blood & Cancer 2011;57(6):1044-8.
61. Bodenheimer T, Wagner EH, Grumbach K. Improving primary care for patients with chronic illness: the chronic care model, Part 2. JAMA 2002;288(15):1909-14.
62. Brousse V, Elie C, Benkerrou M, Odièvre MH, Lesprit E, Bernaudin F, et al. Acute splenic sequestration crisis in sickle cell disease: cohort study of 190 paediatric patients. British Journal of Haematology 2012;156(5):643-8.
63. Brown RT, Armstrong FD, Eckman JR. Neurocognitive aspects of pediatric sickle cell disease. Journal of Learning Disabilities 1993;26(1):33-45.
64. Burlew AK, Evans R, Oler C. The impact of a child with sickle cell disease on family dynamics. Annals of the New York Academy of Sciences 1989;565:161-71.
65. Deeks J, Higgins J, Altman D. Chapter 9 Analysing data and undertaking meta-analysis. In: Higgins JPT, Green S editor(s). Cochrane Handbook for Systematic Reviews of Interventions. Version 5.1.0. Available from www.cochrane-handbook.org. Wiley, 2011.
66. Delis DC, Freeland J, Kramer JH, Kaplan E. Integrating clinical assessment with cognitive neuroscience: construct validation of the California Verbal Learning Test. Journal of Consulting and Clinical Psychology 1988;56(1):123-30. [PUBMED: 3346437]
67. Di Sabatino A, Carsetti R, Corazza GR. Post-splenectomy and hyposplenic states. Lancet 2011;378(9785):86-97.
68. Ebert EC, Nagar M, Hagspiel KD. Gastrointestinal and hepatic complications of sickle cell disease. Clinical Gastroenterology and Hepatology 2010;8(6):483-9.
69. Guyatt GH, Oxman AD, Schunemann HJ, Tugwell P, Knotterus A. GRADE guidelines: a new series of articles in the Journal of Clinical Epidemiology. Journal of Clinical Epidemiology 2011;64(4):380-2.
70. Higgins JP, Thompson SG, Deeks JJ, Altman DG. Measuring inconsistency in meta-analyses. BMJ (Clinical research ed.) 2003;327(7414):557-60. [PUBMED: 12958120]
71. Higgins JPT, Altman DG (editors). Chapter 8: Assessing risk of bias in included studies. In: Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 [updated March 2011]. The Cochrane Collaboration, 2011. Available from www.cochrane-handbook.org.
72. Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 [updated March 2011]. The Cochrane Collaboration, 2011. Available from www.cochrane-handbook.org 2011.
73. Hill C, Maskowitz K, Danis B, Wakschlag L. Validation of a clinically sensitive, observational coding system for parental behaviors: The Parenting Clinical Observation Schedule. Parenting: Science and Practice 2008;8(2):153-85.
74. Hurtig AL. Relationships in families of children and adolescents with sickle cell disease. Journal of Health & Social Policy 1994;5(3-4):161-83.
75. Imdad A, Yakoob MY, Bhutta ZA. Impact of maternal education about complementary feeding and provision of complementary foods on child growth in developing countries. BMC Public Health 2011;11 Suppl 3:S25.
76. Ingram VM. Abnormal human haemoglobins. III. The chemical difference between normal and sickle cell haemoglobins. Biochimica et Biophysica Acta 1959;36:402-11.
77. Kral MC, Brown RT, Hynd GW. Neuropsychological aspects of pediatric sickle cell disease. Neuropsychology Review 2001;11(4):179-96.
78. Landgraf JM, Maunsell E, Speechley KN, Bullinger M, Campbell S, Abetz L, et al. Canadian-French, German and UK versions of the Child Health Questionnaire: methodology and preliminary item scaling results. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 1998;7(5):433-45. [PUBMED: 9691723]
79. Leikin SL, Gallagher D, Kinney TR, Sloane D, Klug P, Rida W. Mortality in children and adolescents with sickle cell disease. Cooperative Study of Sickle Cell Disease. Pediatrics 1989;84(3):500-9.
80. Maxwell K, Streetly A, Bevan D. Experiences of hospital care and treatment-seeking behavior for pain from sickle cell disease: qualitative study. Western Journal of Medicine 1999;171(5-6):306-13.
81. Miller ST. How I treat acute chest syndrome in children with sickle cell disease. Blood 2011;117(20):5297-305.
82. Modell B, Darlison M. Global epidemiology of haemoglobin disorders and derived service indicators. Bulletin of the World Health Organization 2008;86(6):480-7.
83. National Institute for Clinical Excellence (NICE), Social Care Institute for Excellence (SCIE). Parent-training/education programmes in the management of children with conduct disorders. NICE Technology Appraisal Guidance 102. www.nice.org.uk/TA102 (accessed 13 Feb 2014).
84. Ohene-Frempong K, Weiner SJ, Sleeper LA, Miller ST, Embury S, Moohr JW, et al. Cerebrovascular accidents in sickle cell disease: Rates and risk factors. Blood 1998;91(1):288-94.
85. Pauling L. Molecular disease and evolution. Bulletin of the New York Academy of Medicine 1964;40(5):334-42.
86. Pham PT, Pham PC, Wilkinson AH, Lew SQ. Renal abnormalities in sickle cell disease. Kidney International 2000;57(1):1-8.
87. Quinn CT, Rogers ZR, Buchanan GR. Survival of children with sickle cell disease. Blood 2004;103(11):4023-7.
88. Rees DC, Williams TN, Gladwin MT. Sickle-cell disease. Lancet 2010;376(9757):2018-31.
89. Robin AL, Koepke T, Moye A. Multidimensional assessment of parent-adolescent relations. Psychological Assessment 1990;2(4):451-9.
90. Sawyer SM, Aroni RA. Self-management in adolescents with chronic illness. What does it mean and how can it be achieved?. Medical Journal of Australia 2005;183(8):405-9.
91. Schünemann HJ, Oxman AD, Higgins JPT, Vist GE, Glasziou P, Guyatt GH. Chapter 11: Presenting results and 'Summary of findings' tables. In: Higgins JPT, Green S editor(s). Cochrane Handbook for Systematic Reviews of Interventions. Chichester: John Wiley & Sons, Ltd, 2008:335-57.
92. Schünemann HJ, Oxman AD, Vist GE, Higgins JPT, Deeks JJ, Glasziou P, et al. Chapter 12: Interpreting results and drawing conclusions. In: Higgins JPT, Green S editor(s). Cochrane Handbook for Systematic Reviews of Interventions. Chichester: John Wiley & Sons, Ltd, 2008:359-87.
93. Steen RG, Miles MA, Helton KJ, Strawn S, Wang W, Xiong X, et al. Cognitive impairment in children with hemoglobin SS sickle cell disease: relationship to MR imaging findings and hematocrit. American Journal of Neuroradiology 2003;24(3):382-9.
94. Streisand R, Braniecki S, Tercyak KP, Kazak AE. Childhood illness-related parenting stress: the pediatric inventory for parents. Journal of Pediatric Psychology 2001;26(3):155-62. [PUBMED: 11259517]
95. Stuart MJ, Nagel RL. Sickle-cell disease. Lancet 2004;364(9442):1343-60.
96. Tanabe P, Porter J, Creary M, Kirkwood E, Miller S, Ahmed-Williams E, et al. A qualitative analysis of best self-management practices: sickle cell disease. Journal of the National Medical Association 2010;102(11):1033-41.
97. Tyrer P, Nur U, Crawford M, Karlsen S, McLean C, Rao B, et al. The Social Functioning Questionnaire: a rapid and robust measure of perceived functioning. International Journal of Social Psychiatry 2005;51(3):265-75. [PUBMED: 16252794]
98. Weatherall DJ, Clegg JB. Inherited haemoglobin disorders: an increasing global health problem [Inherited haemoglobin disorders: an increasing global health problem]. Bulletin of the World Health Organization 2001;79(8):704-12. [S0042-96862001000800005 [pii]]
99. Welch V, Petticrew M, Tugwell P, Moher D, O'Neill J, Waters E, et al. PRISMA-Equity 2012 extension: reporting guidelines for systematic reviews with a focus on health equity. PLoS Medicine 2012;9(10):e1001333.