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Some Notes on the Role of Questions and Answers in Doctor-Patient Conversation
The article attempts to bring some new insights into the role of questions and answers in doctor-patient communication through a comparative analysis of different medical specialities. Its findings are statistically processed.
The aim of this article is to present some preliminary findings obtained during my research in the field of doctor-patient interaction . It concentrates on the role of questions and answers, especially how they contribute to asymmetry , the characteristic feature of the relationship between doctors and their patients (Mishler 1984, Todd and Fisher 1983, Müllerová 2002). Moreover, it discusses some differences and obscurities in previous research (e.g. Korsh, Gozzi, Francis 1968, West 1983, Ainsworth-Vaughn 1998), and offers a possible explanation. Although more studies touching the topic have been published in recent years (e.g. Gwyn 2002, Humphreys 2002), my work, as it will be explained below, differs both in the material and methodology.
The corpus under investigation is a collection of authentic materials recorded by Maria Györffy (2001) in consulting rooms all over Great Britain and the United States. It is divided into 13 units, each of them based on a different medical speciality. For the purposes of my analysis I have chosen five of them, namely Internal Medicine, Obsterics and Gynaecology, Paediatrics, Oto-rhino-laryngology and Orthopaedics. Each speciality comprises ten dialogues, which means there are 50 dialogues under examination, the total number of turns being 725. The advantage of such corpus is that it gives an opportunity for so called "communicative comparison" , i.e. a comparative analysis of D-P dialogues in different medical specialities, which, as I hope, could reveal a more complex picture of doctor-patient inteviews.
According to Rolf Wynn, there are two major approaches to doctor-patient relationship research: "...the sociolinguistic approach (of which ethnomethodological conversation analysis is quite typical) and the medical approach (of which Bales' Interaction Process Analysis and Byrne & Long's method are typical)."  In his book The Linguistics of Doctor-Patient Communication. An analysis of the methodology of doctor-patient communication research (1995), Wynn comments on the strengths and weaknesses of both of them, and concludes his analysis by suggesting a combination of the two methodologies. I take his point of view and try to combine the qualitative aspects of conversation analysis (e.g. the interpretation of questions and answers) with the quantitative aspects of the medical (psychological) approach.
From 50 dialogues consisting of 725 turns I have excerpted 374 questions. In accordance with the research which has been done before (West 1993, Humphreys 2002), I understand question as "...any utterance requiring a response within the context of the interaction, regardless of form (interrogative, declarative, etc); any formal question; and any utterance that receives a response as though it were a question"  and I categorize questions into three groups, namely yes/no questions (Y/N), either/or questions (E/O), and open questions. Furthermore, I distinguish doctor-initiated and patient-initiated questions, and classify them according to their place (phase)  within the dialogue. My findings are offered in the form of tables and figures.
Tables 1 and 2 present absolute and relative frequencies of the distribution of questions between doctors and patients. They also give information about the number (percentage) of questions in particular medical specialities with regard to question types and phases of the D-P talk. Tables 3, 4 and 5 offer results of the F-test, which reveals how significant the distinctions between the medical specialities in this collection are . I have also calculated correlations  between particular variables (participants, medical specialities, question types and phases). However, the only significant correlation (r=0.33) is between the participants and phases. For example, patients usually raise their questions during the phase of examination and treatment. There are no patient-initiated questions asked during the history-taking phase. The other correlations are not as important.
The importance of questions and answers in D-P dialogues is undeniable. They "introduce, develop and dissolve topics" , and help to reach the correct diagnoses and treatment. Statistics I have tried to elaborate show that as many as 649 turns (90 %) out of 725 are formed solely by questions or answers. Out of 374 questions, 354 (95%) are initiated by doctors, only 20 (5%) are initiated by patients. 199 (53%) belong to Y/N questions, 52 (14%) to E/O questions, and 123 (33%) to open questions (Figure 1). 38 questions (10%) appear during the history-taking phase, 327 (87%) during the examination phase, and 9 (3%) during the treatment phase (Figure 2).
Considering the findings of previous researchers (Ainsworth-Vaughn 1998, West 1983), these results are somewhat surprising. The greatest difference is in the distribution of questions and answers between doctors and patients. As West points out, only 9% of all questions in her material are patient-initiated. The relative frequency of patient-initiated questions in the corpus studied by Ainsworth-Vaughn is much higher (40%). Thus the very first problem which needs to be solved is to find an explanation for this divergence.
One might suspect that the distinction could be closely connected with the context of the particular medical speciality under examination. Patients, as nonprofessionals, are not, of course, acquainted with any of these disciplines, they lack the knowledge of medical terminology, and hardly understand the process of examination and following treatment. However, for some reasons, one may still believe that certain medical branches (e.g. Paediatrics or ORL) are easier to become familiar with than to understand, for instance, Internal Medicine or Orthopaedics . As a result, patients are more confident and would rather ask more questions when visiting a paediatrician or an oto-rhino-laryngologist than when seeing an internist.
Such hypothesis would be acceptable if there was no evidence against. Unfortunately, both West and Ainsworth-Vaughn worked with collections of dialogues betweeen patients and their family practitioners, i.e. within the same medical speciality. Still, their findings were considerably different. Furthermore, the correlation (r=0.2) I have calculated in my material proves there is no direct correspondence between the medical branch and participants, and even some results of the F-test (e.g. the comparison of ORL and Orthopaedics with regard to participants, F=0.73) show that we cannot take the proposed assumption for granted.
It might also appear worth investigating whether the asymmetrical findings in the distribution of questions and answers could not be sought in the differences in sex, race and age of doctors and patients who are studied. However, according to West (1983): "Neither sex nor race (of physician or patient) seemed to influence the distribution of questions between parties."  She also claims that the very same conclusion works for the category of age. Thus the explanation must be looked for somewhere else.
The interpretation of D-P questions and answers in the corpus I have worked with prove that most questions patients ask take place when they really feel worried about something. Usually they must undergo an operation (examples 1 and 2) and they want doctors to explain the operation in detail. They want information about what it involves, whether it is dangerous or not, what possible complications they may expect. Simply, patients wish to hear that the surgical intervention will help them and there is nothing to fear. It doesn't matter whether such dialogues take place in consulting rooms of ORL practitioners or orthopaedic specialists. It doesn't make a big difference of which age, sex or race physicians and their patients are. The most important thing which should be taken into consideration when solving the problem of the distribution of D-P questions is the level of patient's anxiety about his/her health problems and their treatment.
D: You've got a deviated nasal septum. This part of your nose is cartilage, and instead of being straight it's twisted and the twist is blocking you on the left side. I'm pleased to say we can fix it for you. We can put it right with an operation to straighten up your nose, as there are nomodicenes or tablets really that will help.
D: Mrs Wallis, I have the results of your X-rays. These show you have severe osteoarthritis of your left hip. This is due to a congenital dislocation of the hip which you've had since birth. I think the best treatment for you would be an operation to replace your left hip.
5.1 The role of doctor-initiated questions
As it was mentioned above, the doctor-initiated questions are much more numerous than those initiated by patients. Out of 354 doctor-initiated questions, 188 (53%) could be classified as Y/N questions, 52 (15%) as E/O questions, and 114 (32%) as open questions (Figure 3). 38 (11%) take place during the history-taking phase, 315 (89%) during the examination phase, and only 1 (0%) during the treatment phase (Figure 4).
Unlike patients (see below), doctors freely take advantage of using all the question types. Because the correlation between the question type and the participant is quite low (0.03), there is no significant correspondence between these two attributes of the consultation. What is significant, however, is the fact that one hundred percent of doctor-initiated questions are asked during the history-taking and examination section. Since doctors have on the average only eight minutes to "establish rapport, discover the reason for a patient's visit, verbally and physically examine the patient, discuss the patient's condition, establish a treatment plan, and terminate the exchange" , these two parts are solely reserved for them to gather information, to concentrate and diagnose responsibly.
We may see that there is only one doctor-initiated question asked during the treatment phase in my corpus (example 1). This question appears after a long stretch of doctor's talk about the possible treatment, and invites a female patient to raise any questions concerning her problems. As the correlation proves (r=0.33), there is a connection between participants and phases in their dialogue. The treatment section is used by doctors to explain the process of treatment or therapy, and by patients to ask some additional questions about their diagnosis and following cure (example 2).
D: Would you like to ask me any questions...?
P: Is it a big operation?
In addition to what has been said about the role of doctor-initiated questions during the treatment section, some recent studies mention a specific sequence of doctor's talk, which is repeatedly appearing throughout each medical consultation, especially during the treatment phase (e.g. Humphreys 2002). The sequence consists of a rhetorical question, an answer, and final intepretation. As Humphreys points out: "This Question-Answer-Interpretation sequence places the patient in a position where they could, if they wished, question not only the treatment offered, but the thinking behind it. Therefore, this strategy is significant in balancing the asymmetry between doctors and patients."  Because the interpretation phase is also strongly rooted in the corpus I have been working with (example 3), I may confirm her findings.
D: You have been exposed to the genital wart virus through sexual contact with somebody who has genital warts or has the virus in his skin and the genital area. Unfortunately, I cannot tell you how long you have had the virus in your skin or who you could have caught it from, as it does not have to be your present partner but could have been from a partner several years ago.... The warts will disappear with treatment, but unfortunately, I can't give you any guarantee that they will not return.
5.2 The role of patient-initiated questions
The distribution of patient-initiated questions in my collection is as follows. 11 of them (55%) belong to Y/N questions, no question (0%) could be classified as E/O questions, and 9 (45%) belong to open questions (Figure 5). There are no patient-initiated questions (0%) taking place during the history-taking phase, 12 questions (60%) take place during the phase of examination, and 8 questions (40%) take place during the phase of treatment (Figure 6).
There are three important points which we should take into consideration when interpreting the patient-initiated questions. The first is the fact that no questions are asked during the history-taking phase. At the beginning of the consultation, the interview is usually in doctors' hands. Physicians aim to acquire as much information as possible, and there is no place for patients to raise their questions, even if they wanted. To keep this form, physicians make only short pauses not to give patients too much time to ask. They also avoid giving them any explicit invitation to do so. According to Humphreys: "This may indicate a higher degree of consensus to the conventional roles of doctor and patient." 
Another interesting point to be noticed is that there are no E/O questions on the side of patients. As the sample of patient-initiated questions is very low, it is difficult to say why. In my opinion, the most probable explanation could be deduced from the type of information patients look for. Patients usually raise their questions when they do not understand what doctors would like to know, what they actually ask about (example 1), when they need some advice (example 2), or when they desire to be given direct replies to their worries and anxieties (example 3). In all these situations Y/N questions (example 3) or open questions (examples 1 and 2) are preferred. Most patients, as lay people, do not have enough medical knowledge to offer their carers two or more alternatives, and therefore it is easier and more natural for them to use the other two question types.
D: What is it /the phlegm/ like?
P: Well, what should I do in the meantime, Doctor?
P: Will my hearing get better, Doctor?
The last point to be mentioned here is in a sharp contrast with the findings of Korsch, Gozzi, Francis (1968)  and West and Page (both in Todd and Fischer 1983), whose results show that there is a tendency to ignore patient-initiated questions. For example, according to West, only 87% of questions raised by patients in her corpus were answered. My findings differ rapidly because all questions asked by patients in this material are answered. Here I am again about to agree with Joanne Humphreys and her explanation that: "Recent social changes have altered the balance of power between doctors and patients through increased openess on the part of the medical profession and greater access to information for patients."  The same results of her research as mine give some evidence for such argument. However, it is necessary to add that the shape of doctor-patient interaction has not been changed in all its aspects, and that the asymmetrical relationship has been preserved.
To sum up the principal points of the present article, let me repeat the most important findings in relation to asymmetry:
What has been said might suggest that the asymmetrical relationship between physicians and patients has been preserved so far. However, there is a tendency to "reduce hierarchies and renegotiate roles" .
 For stylistic purposes, in order not to repeat the same sets of words all the time, I use such combinations as doctor-patient interaction, doctor-patient communication, doctor-patient conversation, doctor-patient talk, doctor-patient interview, even doctor-patient relationship. At the same time I use the following expressions as synonyms for doctor: physician, practitioner, carer. Although I am well aware of sometimes big differences in their meanings, it is not necessary to distinguish between them in this work.
 Mishler (1984: 14) describes asymmetry as a struggle between voices; between the "voice of medicine (i.e. the technical-scientific assumptions of medicine)" and the "voice of the lifeworld (i.e. the natural attitude of everyday life)".
 As far as I know, this term (originally komunikativní komparatistika) was used for the first time by Müllerová, Hoffmannová and Schneiderová in their collection Mluvená čeština v autentických textech (1992: 103). In their opinion, the comparison of different medical specialities should become the perspective of further research within the doctor-patient interaction.
 Wynn, 1995, p. 10.
 Humphreys, 2002, p. 20.
 There are more ways to structure the medical encounter. For example, Byrne and Long (1976) distinguish six phases:
Heath (1992), on the other hand, distinguishes only two sections:
For the purposes of my analysis I distinguish three basic phases: history-taking, examination, treatment.
 "Correlation is a measure of the relation between two or more variables. Correlation coefficiants (I use Pearson) can range from -1.00 to +1.00. The value of -1.00 represents a perfect negative correlation while a value of +1.00 represents a perfect positive correlation." Available at www.statsoftinc.com/textbook/stathome.html
 Paget, 1983, p. 71.
 Here I would see the influence of various TV series and soap operas (e.g. Nemocnice na kraji města, Chicago Hope), which sometimes present surgeons as some supernatural creatures.
 West, 1983, p. 88.
 Paget, 1983, p. 59.
 Humphreys, 2002, p. 34.
 Humphreys, 2002, p. 37.
 This information is acquired in West, 1983, p. 99.
 Humphreys, 2002, p. 4.
 Gwynn, 2002, p. 69.
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Heath, CH. (1992): "The delivery and reception of diagnosis in the general-practice consultation", in Drew, P., Heritage, J., eds., Talk at work, 235-267 (Cambridge: CUP).
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Korsch, B., Gozzi, E., Francis, V. (1968): "Gaps in doctor-patient interaction and patient satisfaction", in Paediatrics 42, 855-870.
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