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American Journal of Clinical Nutrition, Vol. 77, No. 4, 1039S-1042S, April 2003
© 2003 American Society for Clinical Nutrition

Dietitian–general practitioner interface: a pilot study on what influences the provision of effective nutrition management1,2,3

Lisa G Nicholas, C Dimity Pond and David CK Roberts

1 From the Discipline of General Practice, School of Medical Practice and Population Health, University of Newcastle, Callaghan, Australia (LGN and CDP); and the Australian Food and Grocery Council, Callaghan, Australia (DCKR). DCKR was formerly a member of the Discipline of Nutrition and Dietetics, School of Health Sciences, University of Newcastle, Callaghan, Australia.

2 Presented at the Third Heelsum International Workshop, held in Heelsum, the Netherlands, December 10–12, 2001.

3 Reprints not available. Address correspondence to L Nicholas, PhD Candidate, Discipline of General Practice, University of Newcastle, Callaghan NSW 2308, Australia. E-mail: lisa.nicholas{at}studentmail.newcastle.edu.au.


   ABSTRACT
TOP
 ABSTRACT
INTRODUCTION
 SUBJECTS AND METHODS
 RESULTS
 DISCUSSION
 REFERENCES
 
Background: Effective patient nutrition management can both improve people’s health and reduce the cost of health care. In Australia, general practitioners (GPs) and dietitians are in a position to provide this service. However, there is a lack of information available on what influences the provision of the service.

Objective: The objective was to determine qualitative factors that influence nutrition management by GPs and dietitians.

Design: A convenience sample of GPs and dietitians was surveyed using a qualitative questionnaire. The questionnaire related to issues including influences on the GP’s decision to initiate nutrition management, barriers to providing nutrition counseling, influences on the GP’s decision to refer to a dietitian, and barriers to referral.

Results: Fourteen of 20 GPs and 15 of 30 dietitians responded with usable data. The primary influence on a GP’s decision to initiate nutrition management (GPs’ and dietitians’ responses) was the presentation of a patient who required nutrition advice. Barriers to providing nutrition counseling were time and knowledge (GP response), whereas dietitians saw time and lack of patient interest as issues. The primary influence on the GP’s decision to refer to a dietitian was a patient presenting with complicated nutrition requirements (GP response), whereas dietitians considered a patient seeking nutrition knowledge as the key influencer. GPs identified cost to the patient as the main barrier to referring to a dietitian, whereas dietitians saw lack of knowledge of where to refer as the key issue.

Conclusions: The differing responses suggest that more research is required to understand what influences patient nutrition management by GPs and dietitians in Australia.

Key Words: Dietitian • general practitioner • nutritional advice • qualitative survey • barriers • primary health care • Australia


   INTRODUCTION
TOP
 ABSTRACT
 INTRODUCTION
SUBJECTS AND METHODS
 RESULTS
 DISCUSSION
 REFERENCES
 
The goal of changing risk factors (primary prevention) related to lifestyle remains the cornerstone of public health efforts to minimize the burden of many diseases. Early identification of nutrition-related diseases and conditions could lead to improved health outcomes, increased health economic benefits, and improved quality of life (1). A study of the burden of disease and injury in Australia showed that diet was a significant factor, most notably because of its occurrence as a risk factor, for those diseases that placed a significant burden on society, particularly cardiovascular disease, type 2 diabetes, and colorectal cancer (2). Public education about diet and health, combined with accurate nutrition counseling, provides strategies for reducing the costs and suffering associated with these illnesses (3).

At the forefront of providing nutrition management to Australians are general practitioners (GPs) and dietitians. There were {approx}17100 vocationally registered GPs in private practice in Australia during 1998–99 (4), and the Australian Bureau of Statistics estimated that during 1999–2000 there were {approx}2400 dietitians employed within the health workforce (5). Eighty-seven percent of the Australian population consulted a GP during 1998–99 (4), and it is evident that GPs encounter many patients with chronic diseases that have nutrition in their etiology and management (6). In some cases, such as lipid disorder management, the number of patient encounters is increasing (7), providing opportunities for GPs to initiate nutrition management, disseminate nutrition information, or refer patients to other health professionals (2), such as dietitians.

However, studies both within and outside Australia have demonstrated that there are many influences that affect the GP’s decision to provide nutrition counseling. These include infrastructural influences such as time and reimbursement, as well as issues relating to the GP’s knowledge, skills, and confidence (8–10). Furthermore, overseas studies have identified barriers for referring to dietitians, including limited access to dietitians and concerns that dietitian counseling will be costly (11–13). The most in-depth Australian study addressing patient nutrition management by GPs was completed more than a decade ago (10), and there is no evidence in Australia as to whether barriers affect GP referrals to dietitians.

The research reported here was initiated to fill some of the gaps in the Australian literature, and to understand what influences patient nutrition management by the GP and the dietitian. This article reports the initial qualitative pilot survey, which primarily asked questions about the influences on the GP’s decision to initiate nutrition management, barriers to the provision of nutrition counseling, influences on the GP’s decision to refer to a dietitian, and barriers to referral to a dietitian. The null hypotheses were that there are no influences on the GP’s decision to initiate nutrition management or refer to a dietitian and that there are no barriers for providing nutrition counseling or referring to a dietitian.


   SUBJECTS AND METHODS
TOP
 ABSTRACT
 INTRODUCTION
 SUBJECTS AND METHODS
RESULTS
 DISCUSSION
 REFERENCES
 
Subjects
There are {approx}400 GPs and 40 dietitians in the Newcastle region of New South Wales, Australia. The pilot survey was initiated to determine themes that would contribute to a larger survey. To do this, a convenience sample of 20 practicing GPs who were linked to the university and 30 dietitians who were members of the Regional Dietitians Group were asked to respond to a short qualitative questionnaire. Participants were asked to reply within 1 month, and after 2 wk a postal reminder was sent.

Survey instrument
The first part of the questionnaire consisted of demographic questions, including age, sex, and, if applicable, geographic area of practice, whether the respondents provided a primary health care service, and where this service was provided. The second part consisted of a series of open-ended questions that related to specific issues on patient nutrition management obtained from the literature. Participants were asked to provide up to 3 responses to each of these questions. The first 4 questions related to the hypotheses. Two other questions were included to further identify issues that may influence patient nutrition management by GPs and dietitians. These included how respondents would manage a patient who would benefit from nutrition counseling but was a precontemplator in the "stage-of-change" model and diagnoses that the respondent felt required nutrition management.

Ethics
The study received ethics approval from the University of Newcastle Human Research Ethics Committee.

Statistical analysis
Demographic data were analyzed using descriptive statistics. Qualitative data were analyzed using a 4-step process (organizing, shaping, summarizing, explaining) (14). Themes generated from the qualitative data were incorporated into a final survey instrument used in the second phase of the study (to be reported elsewhere). Reported here are the results from the qualitative first-stage pilot survey.


   RESULTS
TOP
 ABSTRACT
 INTRODUCTION
 SUBJECTS AND METHODS
 RESULTS
DISCUSSION
 REFERENCES
 
Demographic data
The response rate was 50% (15) for the dietitians (100% female) and 70% (14) from the GPs (71% female). Demographic data for the sample populations are outlined in Table 1Go. In age distribution, most GPs were over 36, whereas most dietitians were under 36. The majority in both groups practiced in an "other metropolitan area" (not a capital city), provided a primary health care service, and provided that primary health care service mainly either through hospital outpatient clinics (dietitians) or private practice (GPs).


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  		TABLE 1 . Characteristics of survey respondents
 
Qualitative data
Both groups agreed that the predominant reason for GP’s providing nutrition counseling was patient need, but there were divergent views (Table 2Go). Various disease states were also identified as determinants for GPs to provide nutrition management, with GPs identifying predominantly chronic diseases (ischemic heart disease, diabetes, and obesity) as triggers, whereas dietitians identified weight loss and anorexia. GPs identified a patient presenting with a complicated dietary need, as well as GPs’ lack of time to provide counseling, as key influencers on their decision to refer to a dietitian. Patients’ seeking nutrition knowledge was rated highly by both sample populations, and a poor response to initial dietary advice was also noted as an influencer by both groups.


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  		TABLE 2 . Type and frequency of predominant responses to questions on initiating patient nutrition management
 
Both GPs and dietitians agreed that time was a crucial barrier in providing nutrition advice (Table 3Go). However, lack of knowledge was also an important barrier for GPs, whereas dietitians felt that lack of patient interest was a barrier. Barriers identified by GPs for referring to dietitians to provide patient nutrition management centered on cost to the patient, lack of patient desire, and long waiting lists. Dietitians felt that uncertainty about where to refer, and perceptions of dietitians’ skills and abilities, were stronger barriers for GPs to refer to dietitians.


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  		TABLE 3 . Type and frequency of predominant responses to questions on barriers to initiating patient nutrition management
 
Both dietitians and GPs thought that if patients presented requiring nutrition counseling but were not motivated to change their dietary behavior (ie, were precontemplators), identifying the risks associated with not changing was an appropriate strategy (Table 4Go). Opinions diverged after that, with GPs suggesting that referral to a dietitian was of lower priority than dietitians considered appropriate. Both GPs and dietitians identified chronic diseases and eating disorders as conditions requiring nutrition management, but malnutrition was given a higher priority by dietitians.


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  		TABLE 4 . Type and frequency of predominant responses to questions on additional areas from the literature that may influence patient nutrition management
 

   DISCUSSION
TOP
 ABSTRACT
 INTRODUCTION
 SUBJECTS AND METHODS
 RESULTS
 DISCUSSION
REFERENCES
 
The high GP response rate may have been due to the researchers’ working in close proximity to those surveyed (because of their link with the university). Dietitians surveyed had less of an association with the researchers and were distributed throughout the Newcastle region, which may have contributed to a lower response rate. Nevertheless, the results support much of the data from the literature.

It is evident from data gathered outside Australia that not all GPs provide nutrition counseling (8, 9, 11, 15–17) and that there is some variation on how often this advice is provided (9, 12). Although the picture of patient nutrition management in Australia is currently unclear, the last major study, performed over a decade ago, concluded that there was a marked discrepancy between how often GPs felt they should be aware of patients’ diets and how often they actually were (10). Helman (18) has suggested that one of the reasons opportunities may be missed by GPs is because GPs tend to think of nutrition in terms of the chronic diseases. In this study, whereas both GP and dietitian respondents reported similar statements as to what would prompt GPs to initiate patient nutrition management, there were some differences in opinions when it came to disease states, with GPs opting for predominantly chronic disease states, whereas dietitians considered other conditions such as nutrition in pregnancy and gastrointestinal disorders. Helman (18) has suggested that GPs may require a broader understanding of nutrition opportunities that present to them within the general practice environment so that potential opportunities for patient nutrition management are not missed.

GP respondents identified time as the predominant barrier to providing nutrition counseling, as was identified in many other studies (8–10, 19, 20). The average time a GP spends with a patient in Australia is 14.6 min per consultation (6), whereas a study of 1030 US physicians found that when nutrition counseling was instigated, time spent on discussing dietary change was 5 or fewer minutes (8). If an Australian GP spent a similar amount of time as that spent in the US study (equivalent to one-third of an Australian consultation), there would be less time to spend on other issues (21). Furthermore, the fee-for-service system in Australia makes nutrition counseling unattractive (22), as it rewards many standard consultations more than an extended consultation, even if the time spent is equivalent.

Overseas studies have identified limited access to dietitians and concerns over the cost of counseling as issues for referring to a dietitian (11, 13, 19, 23). In Australia during 2000–2001, there were 2.3 referrals to all allied health professionals for every 100 GP patient encounters (7). Of these, dietitians received {approx}1%, or 2.3 referrals per 10000 GP patient encounters (7). This referral rate was less than that to podiatrist/chiropodists, psychologists, dentists, and physiotherapists. There are more dietitians than podiatrists/chiropodists employed in Australia (5), and with diabetes (relevant for referral to both groups) being the fifth highest reason for referral to allied health professionals (7), it does suggest there are other impediments in referring a patient to a dietitian. Financial barriers appear to be a factor according to those GPs surveyed, with GPs rating the cost to the patient for counseling as well as lack of availability and access to subsidized services as barriers for referring to dietitians. In Australia dietitians are not covered under the Medicare bulk-billing scheme and are accessible only through either public health institution waiting lists or through full fee–paying private practitioners. GPs may therefore not feel that they are able to initiate referral to a dietitian if they believe their patients are unable to wait for subsidized support (because limited subsidized services are available) or pay for the support. This presents barriers for GPs to refer to dietitians.

This qualitative survey suggests that patient nutrition management issues are complex and there is a need for further research on the dietitian-GP interface to validate the conclusions. Such research needs to address both infrastructural and attitudinal issues if effective patient nutrition management is to be appropriately implemented in Australia.


   ACKNOWLEDGMENTS
 
The research was part of the PhD candidature for L Nicholas (author), who was responsible for the research design, data collection, data analyses, and writing of the manuscript. CD Pond and DCK Roberts, doctoral supervisors for the candidate, provided advice and consultation on all aspects of the research and writing of the manuscript. The authors had no perceived or actual conflicts of interest with the research.


   REFERENCES
TOP
 ABSTRACT
 INTRODUCTION
 SUBJECTS AND METHODS
 RESULTS
 DISCUSSION
 REFERENCES
 

  1. American Dietetic Association. Position of the American Dietetic Association: cost-effectiveness of medical nutrition therapy. J Am Diet Assoc 1995;95:88–91.[Medline]
  2. Strategic Inter-Governmental Nutrition Alliance. Eat well Australia: an agenda for action for public health nutrition 2000–2010. 2001. Internet: http://www.dhs.vic.gov.au/nphp/signal/natstrat.htm (accessed 20 March 2001).
  3. Halsted CH. Clinical nutrition education—relevance and role models. Am J Clin Nutr 1998;67:192–6.[Abstract]
  4. Commonwealth Department of Health and Aged Care. General practice in Australia: 2000. Canberra, Australia: Department of Health and Aged Care, 2000.
  5. Australian Bureau of Statistics. Employed persons in health occupations—averages over 1999–2000. 2000. Internet: http://www.abs.gov.au/ausstats/ (accessed 20 March 2001).
  6. Sayer GP, Britt H, Horn F, et al. Measure of health and health care delivery in general practice in Australia. Canberra, Australia: Australian Institute of Health and Welfare, 2000.
  7. Britt H, Miller G, Knox S, et al. General practice activity in Australia 2000–01. Canberra, Australia: Australian Institute of Health and Welfare, 2001.
  8. Kushner RF. Barriers to providing nutrition counseling by physicians: a survey of primary care practitioners. Prev Med 1995;24:546–52.[Medline]
  9. Hiddink GJ, Hautvast JGAJ, van Woerkum CMJ, Fieren CJ, van ‘t Hof MA. Nutrition guidance by primary-care physicians: perceived barriers and low involvement. Eur J Clin Nutr 1995;49:842–51.[Medline]
  10. Porteous J. Nutrition knowledge, attitudes and practices of New South Wales general practitioners. Sydney, Australia: Royal Australian College of General Practitioners Training Program Resource Centre, 1988.
  11. Kottke TE, Foels JK, Hill C, Choi T, Fenderson DA. Nutrition counseling in private practice: attitudes and activities of family physicians. Prev Med 1984;13:219–25.[Medline]
  12. Worsley A, Worsley AJ. General practitioners value dietitians. J NZ Diet Assoc 1989;43:68.
  13. Splett P, Reinhardt MA, Fleming P. Physicians’ expectations for quality nutrition expertise and service in prenatal care. J Am Diet Assoc 1994;94:1375–80.[Medline]
  14. Hawe P, Degeling D, Hall J. Evaluating health promotion. Sydney, Australia: Maclennan & Petty, 1998.
  15. Murray S, Narayan V, Mitchell M, Witte H. Study of dietetic knowledge among members of the primary health care team. Brit J Gen Prac 1993;43:229–31.
  16. Levine BS, Wigren MM, Chapman DS, Kerner JF, Bergman RL, Rivlin RS. A national survey of attitudes and practices of primary-care physicians relating to nutrition: strategies for enhancing the use of clinical nutrition in medical practice. Am J Clin Nutr 1993;57:115–9.[Abstract/Free Full Text]
  17. Dever J, Kalsbeek W, Sanders L, et al. Counseling practices of primary care physicians. MMWR 1992;41(31):565–7.[Medline]
  18. Helman A. Nutrition and general practice: an Australian perspective. Am J Clin Nutr 1997;65(suppl):1939S–42S.[Abstract/Free Full Text]
  19. Schucker B, Wittes JT, Cutler JA, et al. Change in physician perspective on cholesterol and heart disease. JAMA 1987;258:3521–6.[Abstract/Free Full Text]
  20. Heffernan MW. Nutrition information and general medical practice. In: Menzies Foundation, ed. Nutrition information for health professionals. Vol. 11. East Melbourne, Australia: Menzies Foundation, 1986:81–91. [Transactions of the Menzies Foundation publication 0706-2397.]
  21. Mant D. Effectiveness of dietary intervention in general practice. Am J Clin Nutr 1997;65(suppl):1933S–8S.[Abstract/Free Full Text]
  22. Wahlqvist ML. Food and nutrition. St Leonards, New South Wales, Australia: Allen & Unwin, 1997.
  23. Orleans CT, George LK, Houpt JL, Brodie KH. Health promotion in primary care: a survey of US family practitioners. Prev Med 1985; 14:636–47.[Medline]



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