Characteristic profiles among students and junior doctors with specific career preferences
BMC Medical Education volume 13, Article number: 125 (2013)
Factors influencing specialty choice have been studied in an attempt to find incentives to enhance the workforce in certain specialties. The notion of “controllable lifestyle (CL) specialties,” defined by work hours and income, is gaining in popularity. As a result, many reports advocate providing a ‘lifestyle-friendly’ work environment to attract medical graduates. However, little has been documented about the priority in choosing specialties across the diverse career opportunities.
This nationwide study was conducted in Japan with the aim of identifying factors that influence specialty choice. It looked for characteristic profiles among senior students and junior doctors who were choosing between different specialties.
We conducted a survey of 4th and 6th (final)-year medical students and foundation year doctors, using a questionnaire enquiring about their specialty preference and to what extent their decision was influenced by a set of given criteria. The results were subjected to a factor analysis. After identifying factors, we analysed a subset of responses from 6th year students and junior doctors who identified a single specialty as their future career, to calculate a z-score (standard score) of each factor and then we plotted the scores on a cobweb chart to visualise characteristic profiles.
Factor analysis yielded 5 factors that influence career preference. Fifteen specialties were sorted into 4 groups based on the factor with the highest z-score: “fulfilling life with job security” (radiology, ophthalmology, anaesthesiology, dermatology and psychiatry), “bioscientific orientation” (internal medicine subspecialties, surgery, obstetrics and gynaecology, emergency medicine, urology, and neurosurgery), and “personal reasons” (paediatrics and orthopaedics). Two other factors were “advice from others” and “educational experience”. General medicine / family medicine and otolaryngology were categorized as “intermediate” group because of similar degree of influence from 5 factors.
What is valued in deciding a career varies between specialties. Emphasis on lifestyle issues, albeit important, might dissuade students and junior doctors who are more interested in bioscientific aspects of the specialty or have strong personal reasons to pursue the career choice. In order to secure balanced workforce across the specialties, enrolling students with varied background and beliefs should be considered in the student selection process.
Medical graduates’ career choices are important to understand because they are key determinants of the medical workforce and thus influence how, where, and when medical care will be delivered. In order to discuss the policy implications of managing numbers of specialists, it is critical to elucidate why some specialties are chosen more than others.
There is a substantial literature reporting the factors affecting career choices among medical students. These factors include demographics [1–5], indebtedness [6–12], career-related beliefs, values and attitudes [5, 13–18], personality profiles [5, 19, 20], and academic performance [21, 22]. In 1989, Schwartz et al proposed a “controllable lifestyle (CL)” as one of the major factors that influences career decisions , and suggested that CL specialties included anaesthesiology, dermatology, emergency medicine, neurology, ophthalmology, otolaryngology, pathology, psychiatry and radiology. An increasing trend toward CL specialties among medical students and graduates has been demonstrated since then [4, 5, 11, 13, 23–27]. In the U.S.A. increased competitiveness to enter specialties in the E-ROAD acronym (emergency medicine, radiology, ophthalmology, anaesthesiology, and dermatology)  has been noted and much attention has been paid to their presumably desirable lifestyle and financial security . Consequently, many disciplines have attempted to provide a lifestyle-friendly work environment to improve quality of life for trainees and to attract more medical graduates to non CL careers [8, 13, 23, 26, 29]. However, the definition of CL specialties remains elusive. Factors might include working hours, sometimes in conjunction with income or investigators’ priori perceptions . A simple dichotomization of specialty between CL and non CL might conceal important complexities or variation .
As Cleland et al. have pointed out , much of the research in medical students’ career choice have been carried out in the U.S.A. [4, 11–13, 15, 18, 21, 23–26, 31], where most students are graduate entry (enter medical school after a primary university degree) and anticipate an average educational debt of $100,000 to $150,000 . Indebtedness was reported to affect career preference [3, 6, 8, 11, 12] and resulted in shortages of the primary care workforce [12, 33, 34] due to the wide gap of income between primary care and other specialties [22, 23, 35, 36]. In the U.K., on the other hand, the UK Medical Careers Research Group has been conducting extensive cohort studies of medial graduates involving more than 1/3 of practising NHS doctors who qualified since 1974 . It follows the trend of career preference and progression [38–40], and has reported factors associated with specialty choice. For example, enthusiasm for the specialty was the important factor in career choice of ophthalmology and surgery, while the prospect of good working hours and conditions influenced choosing ophthalmology but much less so in surgery [41, 42]. Compared to other specialties, a choice of paediatrics was more influenced by experience of the subject as a student . Studies on difference between early career preference and eventual choice of specialties in same individuals were conducted in the cohort [44–46], and revealed that issues of work-life balance were the single most common factor of changing in career choice. However, inadequate salary was chosen by only 1.2% of respondents as a reason of not pursuing preferred specialty .
Specialty choice might also be influenced by factors such as the characteristics of a health care delivery system, the practice opportunities available, or the reimbursement policies of government and other payers . In the U.K., about 90% of medical graduates remain in the NHS at four years after qualification  and there is similar job satisfaction score between specialties . The managed care system in the U.S.A. was perceived by medical students and residents to limit access to the health system, cause more conflicts and impair the doctor-patient relationship . The demanding role in time-compressed practice makes primary care less attractive as career for future doctors in the U.S.A. [51, 52], while good hours and working condition of general practice in U.K. influences the career choice of medical graduates . This implies that studies in a varied healthcare system would add different insight into specialty preference. Although literature from countries other than U.S.A. and U.K. are available, those studies have tended to focus on a few specific specialties [53–55], gender difference , graduates who have already chosen the specialty , or conducted with limited participants at a single medical school . Therefore, large scale studies on both students and graduates with a focus on diverse specialties are needed to obtain findings more applicable to countries in which the health system is more equitable and most students enter medical school as undergraduates (directly from secondary school).
In Japan, after 6 years of medical school, there is a two year foundation programme consisting of required and elective clinical rotations , during which the final decision of career choice is made. Due to the absence of regulatory mechanisms to generate balanced distribution of workforce, it allows virtually any graduate to obtain the type of specialty training desired regardless of their performance during the foundation years. As a result, there are severe shortages in paediatrics and obstetrics, and the primary care workforce has never been filled . Koike S et al. also reported that there have been trends to a further decline in popularity of general medicine, general surgery and obstetrics/gynaecology, while an increasing number of medical graduates are choosing dermatology and anaesthesiology .
In 2008, the Japanese government shifted the healthcare policy from limiting to increasing the number of doctors. Since then, the enrollees in medical schools have increased by 10 to 25%. However, it is not clear whether simply increasing the number of medical graduates will result in a sufficient supply of doctors to fulfill the needs of the population, since disparities among specialties already have been recognized [57, 58]. Therefore, finding differences in influencing factors for specialty choice would be pertinent, as it might allow consideration of incentives to enhance the workforce in certain specialties, or focused selection of medical school entrants possessing specified characteristics.
In this study, we conducted a cross-sectional survey among medical students and foundation year doctors in Japan to identify factors that influence specialty preference. Based on the subjective importance of the factors in deciding their specialty of choice, we aimed to categorise the 15 specialties to elucidate if there is such a thing as CL specialties from the respondents’ perspectives, and whether providing a lifestyle friendly environment would be an adequate incentive to choose other specialties.
A literature search was conducted using MEDLINE from 1988 to 2008 using the search words “career”, “choice” and “medical education.” While very few papers explicitly used a conceptual framework, several authors employed the ‘theory of reasoned action’. The theory of reasoned action (TRA) illustrates that a person’s behaviour is determined by his/her intention to perform the behaviour, and the intention is shaped by two components; the attitude towards the behaviour (defined by beliefs about outcomes of the behaviour and importance of these outcomes), and subjective norms (beliefs about how people he/she feel close will view the behaviour and motivation to meet expectation of these individuals) . All other variables including demographic variables are categorized as external variables that operate through attitudes and norms. This framework was designed to examine the impact of multiple factors influencing specific behaviour [14, 60, 61].
In order to structure a questionnaire (see Additional file 1: Appendix), we adopted variables used in the study by Gorenflo et al proposing “model of medical student specialty choice based on the theory of reasoned action” . We chose to use this model as it illustrated the attitudinal and normative influence and effects of external variables on the behaviour of choosing a specialty. In Question 16, we selected variables to reflect the two components of TRA : “behavioural beliefs (beliefs that specialty choice leads to certain outcomes)” such as working hours and attainable lifestyle (items 23-30), and the “normative beliefs (beliefs about whether specific individuals or groups approve or disapprove of the specialty choice” such as advice/expectation of parents, advice from teachers/consultants (items 19-22). As external variables, we included demographic variables (age, gender, marital status with or without children, hometown size and proximity to a large city, previous degree, previous employment, doctor in the family, encounter with a doctor as a role model) in the questionnaire. Other external variables derived from the previous findings in literature [1, 2, 6, 7, 11, 13–15, 21, 23], were also addressed in Question 16 (Additional file 1: Appendix, items also listed in Table 1).
We asked participants to respond to items in Question 16 using a four-point scale to rate to what extent the attributes matched their reason for choosing their career specialties (1=not at all; 2=not particularly; 3=fairly well; 4=extremely well).
Participants were asked to specify which of the following 14 medical specialties they intended to pursue; general medicine/family medicine, internal medicine subspecialty, surgery, paediatrics, obstetrics/gynaecology, psychiatry, anaesthesiology, emergency medicine, dermatology, orthopaedics, ophthalmology, otolaryngology, urology and radiology, or “other”. They were instructed to choose one as the most probable specialty and other specialties ‘under consideration’, as many as applied. When “other” was chosen for a non-listed specialty (e.g. neurosurgery), respondents were asked to specify which discipline they were choosing.
We first distributed the survey to content experts to verify comprehensiveness and appropriateness of questionnaire items, then to a small number of students (n=5) and residents (n=5) in two different hospitals as a pilot and to establish face validity. (Additional file 1: Appendix 1)
Participants and questionnaire administration
A questionnaire survey was conducted anonymously in 4th and 6th year medical students as well as foundation year doctors. Of 80 medical schools in Japan, 49 agreed to participate for 4th year students and 41 for 6th year students. During the three month survey period, 41 and 21 medical schools returned the questionnaire for 4th and 6th year students respectively (4th year students; n=3089, response rate 80.3%, 6th year students; n=1370 and response rate 69.9%). The questionnaire was distributed and collected by the school faculty or an administrator (January to March 2008). In terms of junior doctors, of 849 teaching hospitals in Japan, 342 hospitals participated (n=5320 junior doctors) and 2740 responses were obtained (response rate 51.5%) during the survey period (December 2008 to February 2009). Schools and hospitals which did not return completed questionnaires received up to three reminders by a letter, telephone and facsimile. Individual responses were anonymous, and questionnaire completion was voluntary.
The factor analysis was conducted in SPSS using a principal factor analysis and promax rotation. In each questionnaire item, we calculated the mean and standard deviation and items showing ceiling effect or floor effect were excluded from the analysis. In order to decide the number of factors, a scree plot was generated. Eigenvalue was set to be greater than 1 and items having a factor loading less than 0.35 or showing a similar factor loading in more than 2 factors were excluded, then the factor analysis was repeated. We calculated the Cronbach’s alpha coefficient for each factor to determine its scale reliability and calculated a mean score and standard deviation.
After the factor analysis, we extracted 6th year students and junior doctors, as they had completed clinical rotations at medical school that might have allowed respondents to obtain deeper insights about specialties. In order to compare and contrast characteristic profiles of respondents considering one particular specialty, we identified respondents who chose a single specialty as the most probable career in this survey (n=2325). We grouped the data under 15 different specialties, and calculated the mean for each factor and the z-score (standard score) from the mean and standard deviation of all valid responses in this survey.
x: mean score of a factor among senior students and junior doctors who selected a single specialty as the most probable career
μ: mean of the factor obtained from all valid response
σ: standard deviation of the factor obtained from all valid response
This formula implies that if the mean of a factor of the group is equal to the mean of the whole, the z-score is 50. The higher the z-score, the more the influence of the factor in choosing the specialty compared to other factors within the specialty or in other specialties. Our method enables us to visually grasp which factor is more valued by students/junior doctors who chose a certain specialty relative to their peers, across the broad range of specialties. Since we were unable to identify preceding literature using z-score in career preferences, we discuss the face validity of this method by comparing our results with findings from other studies.
We plotted the z-score on a cobweb chart to visualise the characteristic pattern of the respondents choosing a career from broad range of specialties, then grouped the specialties according to the factor with the highest z-score when the difference between the highest and the lowest was significant (>1 SD).
We received ethics approval from the Institutional Review Board of Mie University School of Medicine.
Respondents and specialty choice
The respondents of this survey account for 40% of all 4th year and 18% of all 6th year medical students in Japan during that academic year. For the survey of medical graduates in a foundation year programme, we received replies from 18% of residents nationwide. Thirty three to 34% of respondents in each year were female, which reflects the ratio of the target population. Of all respondents, 6626 provided complete responses to the questionnaire items (valid response rate 92.0%); only these were used in factor analysis (4th year students; n=2815, 6th year students; n=1288, residents; n=2523). As well as the 14 given specialties, neurosurgery was listed the most common “other” choice by participants. The number of respondents among 6th year students and junior doctors who identified one of the 15 specialties as “a single most probable specialty of choice” was 2,325. Others chose several specialties with equivalent possibilities.
Factor analysis yielded 5 factors that included 23 of the 30 items listed (Table 1); 3 items were excluded due to a ceiling effect; 1 item was excluded due to a floor effect; 2 items were excluded because of low loading factors; one was excluded as it correlated with 2 factors to the same extent.
We defined the following 5 factors based on the types of items that grouped together (Table 1).
Factor 1: Fulfilling life with job security
Factor 2: Bioscientific orientation
Factor 3: Advice from others
Factor 4: Educational experience
Factor 5: Personal reasons
These five factors explained 50.3% of the variance in responses. We calculated Cronbach’s alpha coefficiencies which demonstrated internal consistency that ranged between 0.70 and 0.86.
Characteristic profile of specialties expressed in cobweb chart
The fifteen specialties were classified into 4 groups according to the pattern of z-score. The z-score of “fulfilling life with job security” was the highest compared to other 4 factors in radiology, ophthalmology, anaesthesiology, dermatology and psychiatry (Figure 1). The factor of “bioscientific orientation” was the highest in internal medicine subspecialty, surgery, obstetrics and gynaecology, emergency medicine, urology, and neurosurgery (Figure 2). In paediatrics and orthopaedics, the factor of “personal reasons” showed the highest z-score (Figure 3). In latter 2 groups, z-score of “fulfilling life with job security” was the lowest or the second lowest. The difference between the highest and the lowest z-score in general/family medicine and otolaryngology was less than 1 SD, and we categorised these two as “intermediate group” (Figure 4).
This nation-wide study in Japan identified 5 factors associated with career preferences among medical students and junior doctors, elucidated which factors they valued more in choosing their careers, and compared them to their peers using z-factors. The cobweb chart plotting the z-factors helped us visualise the degree of importance of the factors among trainees with single career interest; choosing one of the 15 different specialties. Although the categorisation of specialties into 4 groups was simply based on the highest and the lowest z-score in each specialty, the patterns of the groups illustrates that there are characteristic profiles among groups.
“Controllable lifestyle specialties” from future workforce perspectives
Our results confirmed that students/graduates who preferred ROAD specialties (radiology, ophthalmology, anaesthesiology and dermatology) did value the “fulfilling life with job security” factor more than others. While the controllable life style (CL) specialties were originally defined based on the physician’s control of time spent on professional responsibilities , the E(emergency medicine)-ROAD specialty was defined by students mainly due to its work hours and income . In our study, the “fulfilling life with job security” factor consists of not only working hours and income, but also job security including risk of malpractice law suits, job availability and influence of future health care reform.
Among the specialties preferred by respondents with the highest z-score in “fulfilling life with job securities” factor, psychiatry was included; however, emergency medicine, often categorized as CL specialty in the U.S., was not in the group. This probably reflects different working conditions in Japan, with a heavy work load in many emergency medicine settings .
Factors that influence preference for “non CL specialties”
Our study further revealed what factors had an influence on choosing a specialty other than CL specialties. The factor of “bioscientific orientation” influenced respondents who preferred one of following 6 specialties; internal medicine subspecialty, surgery, obstetrics/gynaecology, emergency medicine, urology and neurosurgery. This implies that exposing students and residents to the expertise of the discipline, including technologies and research, might enhance the attractiveness of the field. On the other hand students and residents considering paediatrics and orthopaedics were influenced more by the factor “personal reasons”. This factor consists of illness experience and existing interest before entering medical school, which might be identified through interviewing candidates in enrolment process. The “fulfilling life” factor ranked second lowest in internal medicine subspecialty and the lowest in other specialties of “bioscientific orientation” group and “personal reasons” group. At the same time, “educational experience” was ranked second highest in those 2 groups except for orthopaedics ranking it as the 3rd. This suggests that when recruiting to a specialty, emphasis on controllable lifestyle rather than learning experience could deter candidates from these fields.
Expected income as a part of fulfilling life
Newton et al.  identified lifestyle and income as separate factors influencing career choice, and reported that students who chose surgery, obstetrics/gynaecology, orthopaedics, and internal medicine subspecialties considered income more important than lifestyle. In our analysis, however, expected income was included in the 7 items forming “fulfilling life with job security” factor (α=0.86). This factor was considered the least important in surgery, obstetrics/gynaecology, orthopaedics and second least important in internal medicine subspecialties. We speculate that this difference reflects the fact that income disparities among specialties are generally not great in Japan due to a wage system based mainly on number of years after graduating from medical school, although wage difference might exist between hospitals or regions. Indebtedness also has not been a major issue in Japan, since most students enter medical school as undergraduates with their parents’ financial support, whereas medical students’ debt has been a policy concern in the U.S. as a cause of shortages in primary care workforce .
Primary care preference as an intermediate group
Since the problem of doctor shortage in primary care in Japan exists even without income disadvantage or financial pressure among medical graduates, simply financing medical education to address students’ debt, or providing financial incentives might not be sufficient to expand the primary care workforce.
General/family medicine and otolaryngology were both categorized as an “intermediate group” because of the similar weight of the 5 factors. However, unlike respondents with an otolaryngology preference, in respondents who considered general/family medicine as their future specialty, the z-scores of all 5 factors were less than 50. This implies we may have missed external variables relevant to a primary care preference. Murdoch et al. reported positive correlation between students’ interest in primary care and the factor of biosocial orientation, including importance of developing long-term patient relationships and enjoyment of tending to patients’ social and psychological needs , items which were not included in our questionnaire. On the other hand, in respondents with an interest in general/family medicine, the z-score of “bioscientific orientation” was the lowest among 5 factors. Murdoch et al. showed a negative correlation between bioscientific orientation factor and primary care preference. Generalist career selection was also reported associated with attitudes favouring helping people over opportunities for leadership, intellectual challenge and research . Our results support these findings indirectly affirm the influence of biosocial orientation in potential primary care workforce.
We developed a questionnaire by implementing items previously utilised in the literature applying a conceptual framework based on the theory of reasoned action (TRA). We did not employ the scale to measure evaluation of beliefs separately from behaviour beliefs according to TRA, however, our results confirmed that subjective norm was one of factors for career choice and there are groups of beliefs that affect the intention. Although the results collectively demonstrate acceptable internal consistency, additional variables focusing on biosocial orientation may have improved its validity especially elucidating preference in primary care.
Regarding the categorization of specialties, we used the z-score and cob-web chart to simply illustrate the impact of influencing factors for career choice and illustrate the differences across the broad range of specialties. Since we were unable to identify literature using z-score for the aforementioned purpose, we had to assume face validity from the similarity in CL and NCL specialties ascertained in this research and existing studies. Diverse profiles according to specialties that were expressed with z-scores suggest that we should consider selecting medical students with varying beliefs and backgrounds that may reflect varied external variables. This may result in a more balanced work force. Further research concurrently analysing demographic variables obtained in this survey would be helpful to identify medical school applicants with interests in a certain specialty. Comparison between students and junior doctors also would be imperative to elucidate changes in perceptions and attitudes with clinical exposures. Those findings could be used to formulate effective interventions at enrolment and during further education to build workforce in need.
Because this is a cross-sectional survey and results were analysed with regard to self-reported specialty preference not based on actual choice, further research is required to demonstrate predictive validity.
Factors valued by individual junior doctors and senior medical students varied according to their interest in or choice of 15 specialties. Consideration of the characteristic profiles among students and junior doctors with a specific career preference, in order to secure a balanced workforce across the specialties, might include selecting students with various background and beliefs. Emphasis on lifestyle issues, albeit important, might deter some students and junior doctors who are more interested in bioscientific aspects of the specialty or have strong personal reasons toward the career choice. On the other hand, emphasizing only a bioscientific approach might dissuade those interested in primary care. There was significant overlap in factors associated with perceived controllable lifestyle (CL) specialties, a finding similar to studies from the U.S.A. To the best of our knowledge, this is the first nationwide study to survey both medical students and graduates to identify factors influencing their career choice. The results will be useful to those considering interventions to influence career choice and manage the medical workforce.
This study was approved by the Institutional Review Board of Mie University School of Medicine.
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The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1472-6920/13/125/prepub
The authors wish to acknowledge the assistance in statistical analysis provided by Dr. Misato Takada, the comments provided by Dr. Ann Wylie, and the support provided by Dr. Katsuya Takemura.
This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers 19590508, 24390133.
The authors declare that they have no competing interests.
YT served as principal investigator and was responsible for the research design, ethics approval and authorship of the manuscript. KM assisted in all steps of the project and was a major contributor of data collection and analysis. JO and LS are experts in medical education who contributed to research design, interpretation of data and manuscript revision. MT and IK were also intimately involved in research design including questionnaire development, analysis strategy and data interpretation. All authors read and approved the final manuscript.
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Additional file 1: Appendix: Questionnaire developed for 4th and 6th year medical students. In questionnaire distributed among junior doctors, 3 items were added: graduated medical school, postgraduate year (PGY 1 or 2), and the size of area where their hospital is located. (PDF 781 KB)
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Takeda, Y., Morio, K., Snell, L. et al. Characteristic profiles among students and junior doctors with specific career preferences. BMC Med Educ 13, 125 (2013). https://doi.org/10.1186/1472-6920-13-125