Rihoux B, Ragin C. Configurational Comparative Methods: Qualitative Comparative Analysis (QCA) and Related Techniques. Thousand Oaks, CA: Sage Publications; 2009.
Ragin CC. Redesigning Social Inquiry: Fuzzy Sets and Beyond. Chicago: University; 2008.
Thomas J, O'Mara-Eves A, Brunton G. Using qualitative comparative analysis (QCA) in systematic reviews of complex interventions: a worked example. Syst Rev. 2014;3(1):67. https://doi.org/10.1186/2046-4053-3-67.
Sager F, Andereggen C. Dealing with complex causality in realist synthesis: the promise of qualitative comparative analysis. Am J Eval. 2012;33(1):60-78. https://doi.org/10.1177/1098214011411574.
Candy B, King M, Jones L, Oliver S. Using qualitative evidence on patients' views to help understand variation in effectiveness of complex interventions: a qualitative comparative analysis. Trials. 2013;14(1):179. https://doi.org/10.1186/1745-6215-14-179.
Brunton G, O'Mara-Eves A, Thomas J. The “active ingredients” for successful community engagement with disadvantaged expectant and new mothers: a qualitative comparative analysis. J Adv Nurs. 2014;70(12):2847-2860. https://doi.org/10.1111/jan.12441.
Schaffer J. Causes as probability raisers of processes. J Philos. 2001;98(2):75-92. https://doi.org/10.2307/2678483.
Petticrew M, Rehfuess E, Noyes J, et al. Synthesizing evidence on complex interventions: how meta-analytical, qualitative, and mixed-method approaches can contribute. J Clin Epidemiol. 2013;66(11):1230-1243. https://doi.org/10.1016/j.jclinepi.2013.06.005.
Thomas J, Harden A, Oakley A, Oliver S, Sutcliffe K. Integrating qualitative research with trials in systematic reviews. BMJ. 2004;328:1010-1012. http://www.bmj.com/content/328/7446/1010.short. Accessed April 9, 2012.
Flemming K. The use of morphine to treat cancer-related pain: a synthesis of quantitative and qualitative research. J Pain Symptom Manage. 2010;39(1):139-154. https://doi.org/10.1016/j.jpainsymman.2009.05.014.
Sutcliffe K, Melendez-Torres GJ, Burchett HED, Richardson M, Rees R, Thomas J. The importance of service-users' perspectives: a systematic review of qualitative evidence reveals overlooked critical features of weight management programmes. Health Expect. 2018; (Ahead of print);21(3):563-573.
Melendez-Torres GJ, Sutcliffe K, Burchett HED, Rees R, Richardson M, Thomas J. Weight management programmes: re-analysis of a systematic review to identify pathways to effectiveness. Health Expect. 2018;(Ahead of print);21(3):574-584.
Ng M, Fleming T, Robinson M, et al. Global, regional, and national prevalence of overweight and obesity in children and adults during 1980-2013: a systematic analysis for the global burden of disease study 2013. Lancet. 2014;384(9945):766-781. https://doi.org/10.1016/S0140-6736(14)60460-8.
Hartmann-Boyce J, Johns D, Aveyard P, et al. Managing Overweight and Obese Adults: Update Review. The Clinical Effectiveness of Long-Term Weight Management Schemes for Adults (Review 1a). Oxford, England: University of Oxford; 2013.
Hartmann-Boyce J, Johns D, Aveyard P, et al. How Components of Behavioural Weight Management Programmes Affect Weight Change: Review 1b. Oxford, England: University of Oxford; 2013.
Johns D, Hartmann-Boyce J, Aveyard P, et al. Managing Overweight and Obese Adults: Evidence Review. Review 2. Oxford, England: University of Oxford; 2013.
Thomas J, Harden A. Methods for the thematic synthesis of qualitative research in systematic reviews. BMC Med Res Methodol. 2008;8(1):45. https://doi.org/10.1186/1471-2288-8-45.
Prestwich A, Sniehotta FF, Whittington C, Dombrowski SU, Rogers L, Michie S. Health Psychology does theory influence the effectiveness of health behavior interventions? Meta-analysis does theory influence the effectiveness of health behavior interventions? Meta-analysis. Health Psychol. 2013;33(5):465-474. https://doi.org/10.1037/a0032853.
Dixon-Woods M, Cavers D, Agarwal S, et al. Conducting a critical interpretive synthesis of the literature on access to healthcare by vulnerable groups. BMC Med Res Methodol. 2006;6(1):35. https://doi.org/10.1186/1471-2288-6-35.
Barnett-Page E, Thomas J. Methods for the synthesis of qualitative research: a critical review. BMC Med Res Methodol. 2009;9(1):59. https://doi.org/10.1186/1471-2288-9-59.
Noblit G, Hare WD. Meta-Ethnography: Synthesizing Qualitative Studies. Newbury Park, California: Sage Publications; 1988.
Finfgeld-Connett D. Metasynthesis findings: potential versus reality. Qual Health Res. 2014;24(11):1581-1591. https://doi.org/10.1177/1049732314548878.
Davidoff F, Dixon-Woods M, Leviton L, Michie S. Demystifying theory and its use in improvement. BMJ Qual Saf. 2015;24(3):228-238. https://doi.org/10.1136/bmjqs-2014-003627.
Gough D, Oliver S, Thomas J. An Introduction to Systematic Reviews. London: Sage; 2012.
Ragin CC. The limitations of net-effects thinking. In: Rihoux B, Grimm H, eds. Innovative Comparative Methods for Policy Analysis: Beyond the Quantitative-Qualitative Divide. New York: Springer; 2006:13-42.
Pawson R, Tilley N. Realistic Evaluation. Thousand Oaks, CA: Sage Publications; 1997.
Doyle E, Shaw D. Totally YouPLUS: A Web-Based Weight Reduction Intervention Study for Obese Individuals in West Oxfordshire. Uxbridge, UK: West Oxfordshire Locality Group and Bucks New University; 2012.