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Phenotypic differences between male physicians, surgeons, and film stars: comparative studyAntoni Trilla, director of preventive medicine and epidemiology unit, Marta Aymerich , consultant, haemopathology unit, Antonio M Lacy, consultant, general and digestive tract surgery unit, Maria J Bertran, specialist, preventive medicine and epidemiology unit
1 Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain
Objectives To test the hypothesis that, on average, male surgeons are taller and better looking than male physicians, and to compare both sets of doctors with film stars who play doctors on screen.
Design Comparative study.
Setting Typical university hospital in Spain, located in Barcelona and not in a sleepy backwater.
Participants Random sample of 12 surgeons and 12 physicians plus 4 external controls (film stars who play doctors), matched by age (50s) and sex (all male).
Interventions An independent committee (all female) evaluated the "good looking score" (range 1-7).
Main outcome measures Height (cm) and points on the good looking score.
Results Surgeons were significantly taller than physicians (mean height 179.4 v 172.6 cm; P=0.01). Controls had significantly higher good looking scores than surgeons (mean score 5.96 v 4.39; difference between means 1.57, 95% confidence interval 0.69 to 2.45; P=0.013) and physicians (5.96 v 3.65; 2.31, 1.58 to 3.04; P=0.003). Surgeons had significantly higher good looking scores than physicians (4.39 v 3.65; 0.74; 0.25 to 1.23; P=0.010).
Conclusions Male surgeons are taller and better looking than physicians, but film stars who play doctors on screen are better looking than both these groups of doctors. Whether these phenotypic differences are genetic or environmental is unclear.
We finished our medical training at the University of Barcelona more than 25 years ago, and have enjoyed our work ever since. At medical school we noted certain differences between male trainees who selected either surgery or medicine as their specialty. The tallest and most handsome male students were more likely to go for surgery, and the shortest (and perhaps not so good looking) ones were more likely to become physicians (including doctors of internal medicine and its subspecialties) .
Now, after all these years we hypothesise that, on average, surgeons are taller and better looking than physicians. We conducted a comparative study to test this hypothesis.
We selected a random sample of senior staff surgeons and physicians working at the University of Barcelona Hospital Clinic (a 700 bed public hospital), matched by age (52 ±7 years) and sex (all men), from the staff payroll of the surgical and medical departments. We contacted all eligible participants by email. If they agreed to participate, their height (in cm) was recorded and they were asked to submit a digital picture. Age (in years) was registered and checked against that recorded in the payroll database. The external controls were four well known film stars, mostly in their 50s-Harrison Ford as Dr Richard Kimble (a neurosurgeon in the film The Fugitive ), George Clooney as Dr Doug Ross (a paediatrician in the television series ER), Patrick Dempsey as Dr Derek Shepherd (a surgeon in the television series Grey's Anatomy), and Hugh Laurie as Dr Gregory House (a nephrologist and infectious disease specialist in the television series House).
We randomly organised the pictures of all surgeons, physicians, and external controls and showed them to an independent group of eight female observers-three doctors and five nurses from our hospital. All observers were in the same age group as the participants (no further checking of this information was attempted). We decided to avoid (for the time being) male observers, because of potential bias. Observers used the "good looking score" to classify each participant. This score measures the degree of handsomeness on a seven point Likert scale (1, ugly; 7, very good looking).
We discarded the highest and lowest score (outliers) for each participant and used the six remaining scores for our study Mean scores, differences in means with 95% confidence intervals, and standard deviations were used to compare the three groups. We used the standard t test to compare age and the non-parametric (Mann-Whitney U) test to compare height and mean good looking scores.
We contacted 14 surgeons and 16 physicians (24 surgeons and 38 physicians were eligible). Only two surgeons and two physicians did not answer the questionnaire or send a picture (their out of office auto reply was switched on). Two additional physicians were dropped from the final analysis because of the poor quality (technical, of course) of their pictures. The final analysis therefore comprised 12 physicians and 12 surgeons plus four external controls.
The mean age of physicians was 50.6 years (SD 4.02) and of surgeons 51.1 years (SD 4.11) (P=0.76). The mean height of physicians was 172.6 cm (95% confidence interval 170.2 to 175.4) and of surgeons 179.4 cm (175.1 to 184.0) (P=0.01).
Film stars (external controls) had significantly higher good looking scores than surgeons (5.96 v 4.39; difference between means 1.57, 95% confidence interval 0.69 to 2.45; P=0.013) and physicians (5.96 v 3.65; 2.31, 1.58 to 3.04; P=0.003). Surgeons had statistically significantly higher good looking scores than physicians (4.39 v 3.65; 0.74, 0.25 to 1.23; P=0.010). We found small, non-significant differences between film stars who played either surgeons or physicians. Incidentally, we noted a higher proportion of baldness (surrogate marker) among physicians.
We did not make individual results public. However, widespread rumours, discussions, polls, and illegal bets arose throughout the institution as a by-product of our study. If they requested, participants were privately told about their personal score compared with the average score of the relevant group.
Our study shows that, on average, senior male surgeons are significantly taller and better looking than senior male physicians. It also shows that film stars who play doctors are significantly better looking than real surgeons and physicians.
Differences between surgeons and physicians
How do surgeons become taller and better looking than physicians?
In contrast, senior physicians are surrounded by fewer people in their habitat (the patient's bedside and the office), and they therefore have less need to be easily identified or spotted by families and nurses in the middle of a swarm. Physicians tend to hang heavy stethoscopes around their necks, which bows their heads forward and reduces their perceived height. They also complain of a (clearly abnormal) need to endlessly update their knowledge in accordance with the current evidence based approach to medicine by reading and studying heaps of medical journals; this overload of information further grinds them down. Although a prospective study found that doctor's white coats decrease in weight with increasing seniority, no significant difference was found between the mean weight of physicians' coats and surgeons' coats (1.4 v 1.5 kg). 3
Limitations and future studies
Further studies are needed to assess whether our findings also apply to junior male surgeons and physicians, as well as to senior and junior female staff. Currently the number of female surgeons in their 50s at our institution is small, and we cannot enrol enough study subjects, a situation that will change no doubt over the next five to 10 years. We believe also that a non-crossover design deserves further testing (good looking score of men evaluated by men and a similar system for women).
Thanks to all participants in our study who provided a breath of fresh air and a touch of humour. Thanks also to the members of the evaluating committee for taking the risk and having some fun together. Finally, thanks to Sarah Lafuente and Beatriz Serrano for help in the statistical analysis.
Competing interests: AT is a physician and AML is a surgeon. AT and MA have been happily married for 25 years. MA's good looking score for AT was not requested to avoid any problems at home for Christmas.