Table 3
Summary of studies included in the qualitative synthesis
Study reference number Country Participants Data collection methods Data analysis methods [37] United States (US) Trained and licensed chiropractor in a small town in the American Midwest Ethnographic case-report Not explicitly specified, but healing performance of a chiropractor is proposed to contain four intrinsic claims to trustworthiness [34] US 20 Patients at the group Health Cooperative of Puget Sound Discussion groups Information for the qualitative analysis and findings was limited [44] Canada 6 Chiropractors licensed with the College of Chiropractors of British Columbia Interviews Thematic analysis [42] US 15 Randomly selected participants from the 29 participants randomised to the chiropractic group Interviews Grounded theory approach [46] Canada 197 Participants were recruited from 20 participating chiropractors in Ontario Interviews using Flanagan’s Critical Incident Technique Inductive content analysis [35] Australia 208 Patients were observed Recording duration of all patient–practitioner interactions was recorded, some were audiotaped, notes taking Thematic analysis [36] Australia 9 Chiropractors and 173 patients Interviews Data were analysed by comparing the responses of individual patients with those of their practitioner in each of 173 case studies [39] US 171 Participants part of a randomised control trial Interviews Interactive approach to qualitative content analysis [45] Canada 6 Focus groups, a total of 69 patients Focus group sessions Qualitative content analysis (an interpretive approach) [38] US A male family chiropractor and a sample of 57 people, who made a total of 104 office visits between them Data were collected through (1) audiotape of all clinical interaction of the chiropractor for 8 days, (2) formal and informal interviews with the chiropractors., his staff, and patients Data was content analysed using the modified Bales method of process analysis [69] [43] Canada 11 Chiropractors and nine patients Interviews Grounded theory approach [47] US 60 Participants in the Crotched Mountain Individual interviews or focus groups Thematic content analysis [40] Canada 3 Female patients and 3 male patients in the Halifax metro area, Nova Scotia, Canada Focused ethnographic approach involving 16 semi-structured interviews A systematic approach for analysing ethnographic data developed by Roper and Shapira [70] [41] Canada 90 Participants were recruited from two private chiropractic clinics in Calgary, Alberta, Canada Interviews Thematic analysis