A survey of chiropractors practicing in Germany: practice characteristics, professional reading habits, and attitudes and perceptions toward research
Chiropractic & Osteopathy volume 15, Article number: 6 (2007)
In 2004, a survey conducted by the European Chiropractor's Union among member countries reported that "there appears to be little interest in research among chiropractors in Germany." However, no research has tested this statement. The objective of this study was to explore the attitudes and perceptions of practicing chiropractors in Germany regarding research, to look at their reading and research habits, and to gather demographic and practice data.
A questionnaire was developed and distributed among participants at a seminar held by the German Chiropractors' Association in 2005. The questionnaire was mailed to any members of the association who did not attend the seminar.
A total of 49 (72%) of 68 distributed questionnaires were returned. Forty-five (92%) respondents stated they would support research efforts in Germany and 15 (31%) declared interest in participating in practiced based research. An average of three hours per week were reportedly spent reading scientific literature by 44 (85%) respondents. However, few journals listed by respondents were peer-reviewed and indexed; most were newsletters of chiropractic organizations or free publications. Most participants agreed on the importance of research for the profession, but when asked about the most pressing issue for chiropractic in Germany, legislation and recognition of the profession were the dominant themes.
The results of this survey show that there is a general interest in supporting and participating in research activities among chiropractors practicing in Germany. Next steps could consist of educating practitioners about the resources available to read and interpret the scientific literature and thus further the understanding of research.
In 2004, a survey conducted by the European Chiropractor's Union among its member countries reported that "there appears to be little interest in research among chiropractors in Germany,"  however there were no data to support this statement. Although there is no evidence in the literature for research conducted by German chiropractors, the interest and willingness to support research in Germany have not been investigated.
The situation for chiropractors in Germany is, like in most European countries, unique.  Chiropractic is not regulated as a profession; instead it is grouped with other alternative therapies practiced by "lay practitioners" which in German are referred to as "Heilpraktiker". In contrast to graduates of accredited chiropractic institutions which are regulated worldwide by the Council on Chiropractic Education (CCE), there are no educational requirements for these practitioners except for an examination based on a law from 1939.  "Heilpraktiker" thus can perform manipulation without having proof of any type of education. American chiropractors have taken advantage of this lack of regulation and are teaching chiropractic techniques to lay practitioners. [4–6] On the other hand, the medical profession is claiming "chirotherapy" as their privilege, a qualification which can be earned by MD's after attending 320 hours of continuing education seminars. 
No studies have examined differences in the quality of the education or the care delivered by the three different groups of practitioners in Germany. One retrospective study looking at vertebral artery dissections after chiropractic manipulation/chirotherapy in the cervical region reported that 18 of the 36 patients were treated by orthopedic surgeons, and four were treated by chiropractors.  Unfortunately, the qualifications of the individual practitioners were not described in the paper, but to our knowledge there were no chiropractors who graduated from a CCE-accredited program who performed one of the reported chiropractic treatments. With over 10,000 "lay practitioners" (who may or may not perform manipulations) and several thousand medical doctors performing spinal manipulations , the approximately 70 chiropractors in the country who graduated from CCE accredited institutions struggle with professional identity and believe the public deserves to know the professional training of manual therapy practitioners to make informed decisions about their care. Chiropractors in Germany are also struggling to change legislation in their favor. 
Surveys conducted in Europe have primarily examined practitioner and patient characteristics. [10–12] In Germany, two surveys were conducted as theses by students from the Anglo-European College of Chiropractic. In 1997, Hafer investigated practitioner characteristics.  Patient characteristics were examined as a follow-up. (personal communication) These theses have not been published in the open literature, thus it was important to gather demographic data with this survey.
The objective of this survey was to explore the attitudes and perceptions of practicing chiropractors in Germany regarding research, to look at their reading and research habits, and to gather basic demographic and practice characteristics data.
A self-report questionnaire was developed for this project. The target population was comprised of chiropractors practicing in Germany who graduated from an accredited chiropractic program, most of whom are members of the German Chiropractors' Association (GCA). To ascertain the number of this target population, we contacted the GCA. At the time the survey was administered (November 2005), there were 63 members actively practicing in Germany.
Two data collection methods were used for this study: face-to-face administration and a mailed questionnaire. One of the authors (IS) distributed the questionnaire to participants attending a pediatric seminar held by the GCA in early November 2005. In addition, the questionnaire was mailed in late November to members of the association who did not attend the seminar. Repeat mailings were sent to non-responders in mid-December and early January, by email or by post. All questionnaires were coded for tracking purposes and no names were obtained on individual forms. To preserve confidentiality of responses for the mailed questionnaires, one of the authors (IS) prepared the survey packet and postage-paid return envelope, to be returned to the second author (MAH).
The survey included questions regarding demographics, education, population in the area of practice, patient base, techniques and modalities utilized in practice, reading and research habits, and attitudes regarding research activities by chiropractors. Several questions were adapted from a survey used in the Netherlands and the United Kingdom.  Two questions about attitudes toward research were used from a survey administered to practitioners and chiropractic college faculty in the United States. [14, 15] The questionnaire was pre-tested by Research Fellows at the Palmer Center for Chiropractic Research in Davenport, Iowa and clinicians at the Palmer Clinic in Rock Island, Illinois. Comments and critiques were incorporated into the final version of the questionnaire. The project was reviewed and approved by the Institutional Review Board at Palmer College of Chiropractic.
Numerical data were analyzed using SPSS 13.0. Descriptive statistics were used to report the data. Continuous data were reported as mean (SD), categorical data as count (%). Responses to open-ended questions were organized using a thematic analysis. First the responses were grouped by themes by the author (IS) and another researcher familiar with qualitative analysis (JP). The responses were compiled in an Excel spreadsheet and organized around similar themes. Then consensus was used to identify the major categories reported in the results.
Surveys were administered to all 37 chiropractors who attended the GCA pediatrics seminar, including a few chiropractors practicing outside of Germany, and 31 surveys were mailed to chiropractors who did not attend the conference. A total of 49 (72%) of 68 distributed surveys were returned; 30 (81%) from face-to-face administration and 19 (61%) from the mailed survey. Table 1 lists the demographic characteristics of respondents. Eighteen (37%) of the respondents were female, and 29 (59%) were German nationals. Three of the 29 German nationals and one of the non-German chiropractors who attended the GCA seminar reported practice locations outside of Germany. There were missing data for two non-German respondents regarding practice location.
The majority of respondents graduated from Anglo-European College of Chiropractic in Bournemouth, UK and Palmer College of Chiropractic in Davenport, Iowa, USA. Respondents had been practicing an average of 10.5 years, and an average of eight years in Germany. Most chiropractors practiced in cities rather than rural areas. Promotion activities reported by 61% of respondents included lectures/open house, newspaper articles and advertisements, and websites. The majority of respondents reported they practiced between 31 and 40 hours per week, with a mean patient load of 89 patients per week, and an average of 60% female patients (Table 1). No demographic data are available for non-respondents.
When asked "Please list the chiropractic techniques or systems you use in your office. List in order, starting with the technique you use most often", [see Additional file 1], item 24, Diversified, SOT, and Gonstead techniques were listed first in these lists, 29, 9, and 5 times, respectively. Table 2 shows the number of times any technique was mentioned in response to item 24 in our survey. Other interventions commonly used were rehabilitation exercise, patient education, and nutrition. Low back pain (n = 42), neck pain (n = 28), and headache (n = 19) were reported as the most common presenting complaints. Vertigo/dizziness (n = 20), gastrointestinal complaints (n = 15), and infantile colic (n = 10) were the most common non-musculoskeletal complaints listed. Referrals were reported to come mostly from existing patients (n = 44), other health care professionals (n = 31), yellow page ads (n = 13), and lectures (n = 8).
Data on reading and research habits as well as participant attitudes about research are presented in Table 3. Two respondents reported they had published in a scientific journal. Forty-four (85%) reported to read scientific journals for an average of three hours per week (median one hour, range 0.5 to 31 hours). Journals reportedly read by respondents included The Chiropractic Report (n = 15), Journal of Manipulative and Physiological Therapeutics (JMPT) (n = 11), and others to a lesser degree. The majority (92%) of respondents said they were willing to support research efforts in Germany, mostly by completing surveys or providing patient data (63% each). Fifteen participants (31%) indicated they were willing to participate in a practice based research network, 13 (27%) were willing to financially support research, and six (12%) were willing to help by writing or editing manuscripts.
The value of research for different aspects of chiropractic practice was assessed using a Likert scale, anchored with the descriptors "extremely important" to "not at all important" (Table 4). Respondents considered research extremely important for the acceptance of chiropractic among other health care disciplines (65%); for scientific collaboration (51%); and, for the acceptance among patients (45%).
The last three items of the questionnaire consisted of open-ended questions. Not every participant responded to every question. All responses were recorded in Tables 5, 6, and 7, respectively. The question "In your opinion, what should be done to increase research efforts by the profession in Europe, and specifically in Germany?" elicited answers that can be categorized into acceptance (9), collaboration (8), research priorities (8), comparison (5), and publications (5) (Table 5). Acceptance of the chiropractic profession by the larger public and other health care professions was a primary concern, which in the opinion of some participants should be established before time and money is invested in research. Collaboration with universities, medical researchers and scientists as well as more intra-professional collaboration to conduct chiropractic research was thought to be important by eight of the participants. Several practitioners underlined the importance of comparing chiropractic to other manual methods or standard medical care to distinguish what chiropractors do. Increasing the amount of German research publications was thought to be important as well, either as a German journal or German translations of important research, to educate the public as well as other health care professions, lawyers, and others. Research priorities were mainly focused on musculoskeletal conditions.
The most pressing issue for the chiropractic profession in Germany raised by the respondents was clearly the lack of recognition and licensure (Table 6). Issues in this category included a licensing law, differentiation from other manual practitioners/heilpraktikers, recognition by other health care professions and protection of the title "chiropractor." Publicity, research, and education were three other categories important to respondents.
Participants were also asked to provide any other comments about their experience with research. Three themes emerged: research in general, chiropractic in general, and comments about the survey. (Table 7) Several respondents commented that their experience with research was limited, but that research is important for the profession. The importance of making chiropractic research more public was stressed, within the chiropractic profession as well as with the general public and other health care professions.
The results of this survey suggest that this sample of chiropractors, most of whom practice in Germany, consider research important and are willing to support research. However, at this point in time, the priorities for most practitioners is to gain acceptance among patients and other health care professionals, establish professional licensure laws and protect the title "chiropractor."
The demographic characteristics of chiropractors who responded to this survey are very similar to those found in a survey done in The Netherlands in 2002.  The mean age of chiropractors in our survey was similar to that of Dutch chiropractors (mean age 38, SD 9.3). This has not changed since the last survey in Germany in 1997. However, if respondents to our survey are representative of German chiropractors, the proportion of female practitioners in Germany has grown from 23% to 37% in the past decade. In The Netherlands, approximately 32% of chiropractors are female. In a 2000 survey in the United Kingdom, 46% of the practitioners were female, whereas in a 1976 survey by Breen only 8% of the respondents were female.  There appears to be a shift in chiropractic education; ten years ago, most chiropractors who responded to a survey of chiropractic practice in Germany were trained in American schools (30% at Palmer College).  Our results show slightly more respondents graduated from AECC (35%). This trend is confirmed with the current student population: there is one German student currently enrolled at Palmer College, and nine of the 12 GCA student members are studying in the United Kingdom. (personal communication) In the United Kingdom, about 25% of chiropractors were trained within the country in the 1970's; in 2000, 82% reported to have completed their training in the UK.  A high proportion of non-Dutch practitioners practice in The Netherlands (43%) and from our survey, 41% of non-German national respondents practice in Germany (Table 1). A likely explanation is the lack of chiropractic schools in continental Europe and thus a small number of native chiropractors in both countries.
Even though the importance of research is recognized, an average of only three hours per week is reportedly spent reading scientific literature by the respondents. The median of one hour is likely to be closer to the time the average practitioner spends reading. Few of the publications respondents read are peer-reviewed and indexed; most are newsletters of chiropractic organizations or free publications. Several respondents commented on the limited exposure to research, and some suggested offering a seminar on research methodology. This could be an important first step if measures to implement research activities in Germany are taken.
Compared to a sample of 1,245 American chiropractors in 1997 , respondents in our survey rate the value of research in different ways. (Table 4) Sixty-five percent of respondents to our survey view research as extremely important for the acceptance among other health care disciplines compared to 44% in the US survey. On the other hand, 45% of our survey respondents view research as extremely important for the acceptance among patients, compared to 51% of respondents in the US a decade ago. These data support the current priority of the chiropractic profession in Germany to establish acceptance among other health care practitioners and to gain licensure.
Two opposing opinions emerged from the responding chiropractors in Germany related to research activities: on the one hand, many practitioners suggest that more research should be published in German and by chiropractors in Germany, but on the other hand several practitioners think that money and effort should be put into gaining recognition within the German health care system first. (Tables 5 and 6) With such a small group of chiropractors in Germany and limited resources, it is a difficult task to gain both professional recognition and increase research activities. It appears that educating practitioners about resources such as open-access journals or information available through the ECU Website could help chiropractors gain access to research; these available resources in turn could potentially be used to educate the public as well as legislators about chiropractic.
The sample for the current survey included only members of the GCA and seminar participants (who were not necessarily GCA members). We did not attempt to find and include DC's who are not members of the association. However, it is estimated there are about 15 chiropractors practicing in Germany who are not GCA members. (personal communication)
Although the opportunity and interest to survey GCA members was fortuitous, a major limitation of this project and lesson learned, was that we did not allow enough time to develop the survey items. It became clear in the analysis phase, that we failed to clearly delineate the way in which we captured information about practice location, nationality, and GCA membership (i.e., some seminar attendees were not members of the GCA). From items 3, 8, 9, and 13 [see Additional file 1], we were able to show that three of 29 German nationals and one of 20 non-Germans practice outside of Germany and presumably never practiced in Germany. There were missing data for two non-German respondents. Because of the small survey sample and because we did not know if 4, 5 or 6 of respondents actually practiced outside of Germany, we chose to describe results from all respondents in this report. Therefore, our results should be interpreted with caution.
The results of this survey indicate that currently the first priority for chiropractors who responded to this survey is gaining licensure for chiropractors in Germany. In addition, there is general interest to support and participate in research activities. As pointed out by some respondents, implementing research activities in chiropractic also has the potential to increase acceptance and establish chiropractic licensure. Practitioners voiced an interest in translations of key studies into German, which could be an important tool for educating legislative bodies as well as the public. An important next step may be to educate chiropractors in Germany about the resources available to read and interpret the scientific literature.
Chiropractic Survey 2004. 2004, European Chiropractors' Union, website accessed Aug. 11, 2005.
Legal status - south rises. Backspace. 2005, European Chiropractors' Union
Ernst E: Towards quality in complementary health care: is the German "Heilpraktiker" a model for complementary practitioners?. Int J Qual Health Care. 1996, 8: 187-190.
American DC angers profession in Germany. Dynamic Chiropractic. 2005, MPAmedia, 23: 1-
Janssen G: Trouble persists in Germany: an open letter from Dr. Gordon Janssen. Dynamic Chiropractic. 2006, 23: 26-27.
White IE: A serious lack of loyalty. Backspace. 2005, European Chripopractors' Union
Deutsche Gesellschaft fur Manuelle Medizin. 2007, [http://www.dgmm.de]
Reuter U, Hamling M, Kavuk I, Einhaupl KM, Schielke E: Vertebral artery dissection after chiropractic neck manipulation in Germany over three years. J Neurol. 2006, 253: 724-730. 10.1007/s00415-006-0099-x.
Hafer M: A survey of chiropractic practice in Germany. 1997, Anglo-European College of Chiropractic
Pedersen P: A survey of chiropractic practice in Europe. European Journal of Chiropractic. 1994, 42: 3-28.
Imbos N, Langworthy J, Wilson F, Regelink G: Practice characteristics of chiropractors in The Netherlands . Clinical Chiropractic. 2005, 8: 7-12. 10.1016/j.clch.2004.10.004.
Wilson FJH: A survey of chiropractors in the United Kingdom. European Journal of Chiropractic. 2003, 50: 185-198.
Assendelft WJ, Pfeifle CE, Bouter LM: Chiropractic in The Netherlands: a survey of Dutch chiropractors. J Manipulative Physiol Ther. 1995, 18: 129-134.
Jansen RD, Meeker W, Rosner A: American chiropractors' research priorities. Journal of the Neuromusculoskeletal System. 1997, 5: 144-149.
Marchiori DM, Meeker W, Hawk C, Long CR: Research productivity of chiropractic college faculty. J Manipulative Physiol Ther. 1998, 21: 8-13.
Ilke Schwarz was supported, in part, by a Fellowship from The Foundation for Chiropractic Education and Research. Maria Hondras was supported by a National Institutes of Health Clinical Research Curriculum Award (K30-AT-00977-04). The authors are grateful to the German Chiropractors' Association and especially Timo Kaschel for permission to administer the survey at their seminar and for providing member contact information. Special thanks to Ingrid E. White for reviewing the final draft of the manuscript. We thank the Dutch Chiropractic Association and especially Annemarie de Zoete for permission to use several items from their 1995 and 2005 surveys; William Meeker for permission to use items from 2 surveys published in 1997 and 1998; Dana J. Lawrence and Cynthia R. Long for valuable feedback throughout the project; Judith A. Polipnick for help with the qualitative analysis and reviewing the manuscript; and Lance Corber and Toskhan Cooper for their assistance with the preparation of the data set and data entry.
The author(s) declare that they have no competing interests.
IS conceived the idea for the study. IS and MAH contributed to the design and planning of the project. IS administered the survey to 37 participants at a seminar in Germany and prepared the mailings for 31 potential participants. MAH managed incoming data from the mail surveys. IS analyzed all data and prepared the first draft of the manuscript. MAH provided critical revisions for intellectual content. Both authors edited and approved the final version of the manuscript.
Electronic supplementary material
About this article
Cite this article
Schwarz, I., Hondras, M.A. A survey of chiropractors practicing in Germany: practice characteristics, professional reading habits, and attitudes and perceptions toward research . Chiropr Man Therap 15, 6 (2007). https://doi.org/10.1186/1746-1340-15-6