Table 4.

The taxonomy of Web-based physician reviews (final).

Topic
Physician-related topics
		Subtopic: Medical ethics
		Explanation	Physician’s interpersonal manners and behaviors perceived in the patient-physician interaction, including politeness, decency, patient participation in the treatment process, caring, listened to, understood, taken seriously.
		Keywords	Kind, good, attitude, medical ethics, patient, considerate, noble, careful, polite, show a patient every consideration, respect, indifference, pressing, unfriendly
		Examples	1. This doctor always gets to the treatment room on time and treats me with good manners. 2. At one point, our family member had inappropriate bleeding from several sites on the body which (a doctor) dismissed as unimportant. Eventually we were able to convince other people in the intensive care unit to take care of the situation.
		Original topic	LDAa topic: 10, 15, 25, 26 Topic from the literature: Medical ethics (Relational conduct)
		Frequency (n)	2592
	Subtopic: Medical competence
		Explanation	Patient’s perceptions of the doctor’s competence, experience and knowledge, including accuracy of the diagnostic process and treatment, safe practices or outcomes, observations of missed or correct care, and pain control.
		Keywords	Good, medical skill, curative effect, turn for the better, improved significantly, high degree of medical skill, recovered, exacerbation, aggravation
		Examples	1. His medical skill is so superb that I was soon discharged from the hospital. 2. Doctor Lin is very knowledgeable. He provided me with alternative treatment plans.
		Original topic	LDA topic: 1, 3, 5, 6, 19, 21, 25, 30 Topic from the literature: Physician knowledge and skill
		Frequency (n)	2391
	Subtopic: Medical advice and prescription
		Explanation	The treatment solution given by a physician. It also includes the side effects of medications and treatments.
		Keywords	Treatment, drug, antibiotics, surgery, insulin, take the medicine, injection, oral drugs, infusion, azithromycin, chemotherapy
		Examples	1. Doctor Wang gave Gemcitabine, 5-fluorouracil for the treatment and explained it in detail in view of the different symptoms. 2. I did not get fat. My body shape is normal. No other side effects.
		Original topic	LDA topic: 4, 9, 12, 18, 23 Topic from the literature: Medicine and advice
		Frequency (n)	1910
	Subtopic: Communication skills
		Explanation	Communication skills such as listening skills, asking skills and explaining skills. Make sure the patient is understood and address each patient’s question well.
		Keywords	Patiently answering question, explicate, cannot understand, do not get it, state of illness, problem, ask, detailed, explain, urge again and again, enjoin, analyze
		Examples	What doctor Wang said was easily understood. He will patiently explain what you do not understand.
		Original topic	LDA topic: 2, 7, 17, 24, 27 Topic from the literature: Communication
		Frequency (n)	2133
System-related topics
	Subtopic: Financing
		Explanation	The price for similar services, confusion about billing issues, the stress of dealing with billing departments and unexpected out-of-pocket costs.
		Keywords	Expenses, money, expensive, spend money, cheap, registration fee, waste money, inexpensive, difference, price, expenses for medicine, affordable price
		Examples	The service is good, but it’s expensive. Your insurance may not cover most of it. [...] Call the hospital and ask for the cost first before you commit to any specialty sessions [...]
		Original topic	Topic from the literature: Financing
		Frequency (n)	1903
	Subtopic: Operation process
		Explanation	Discharge information, responsiveness, clinical environment and equipment, and make an appointment. Discharge information allows patients to report their feeling and experiences related to discharge, such as perceived diagnostic errors and revisits to the emergency department. Responsiveness paid attention to whether the physician was accessible when needed or not, such as when seeking emergency department care or immediate care, when the primary doctor is unavailable. Clinical environment and equipment focus on patients’ perception of the comfort of the environment of the hospital, quality and scarcity of equipment, and efficiency.
		Keywords	Difficult, make an appointment, see a doctor, flow, service, ward, consulting, wait in line, beds, reexamination, need to be, out of the hospital, online consulting
		Examples	After I got out of the hospital, doctor Liu called me several times. I told him my recent conditions. It took a long time before the ambulance reached the hospital. Fortunately, the doctors rescued the little boy from the jaws of death. I was very comfortable in the emergency room because at least one expert was on duty every night who regularly checked the patients. The doctor’s office was clean, and the hospital was not crowded. I was comfortable.
		Original Topic	LDA topic: 8, 11, 13, 16, 29 Topic from the literature: Environment, Business process
		Frequency (n)	1934
Patient-related topics
	Subtopic: Patient profile
		Explanation	Patient’s demographic information, including age, sex, address, occupation, diet, hobbies, etc
		Keywords	Gender, height, age, born, weight, address, habits, allergic, hair
		Examples	My aunt feels uncomfortable. She is 60 years old.
		Original Topic	Human annotation
		Frequency (n)	2339
	Subtopic: Symptom
		Explanation	Symptom changes and sign changes. Symptom changes refer to subjective discomfort, abnormal feelings, and obvious pathological changes. Sign changes refer to the anomalous changes which could be diagnosed with objective tools.
		Keywords	Cough, symptoms, transfer, have a fever, abnormal, virus, high blood pressure, diarrhea, serious, catch a cold, thin, swelling, lymph node, bloodshot
		Examples	I have flu-like symptoms, for example, headache, cough, fever and rhinorrhea.
		Original topic	LDA topic: 14, 20
		Frequency (n)	1606
	Subtopic: Diagnosis and pathogenesis
		Explanation	Disease types, features and pathogenesis.
		Keywords	Pathogenesis, influencing factor, pneumonia, diabetes, blood pressure, fallopian tubes, function, cause, infertility, congenital, gastric cancer, genetic abnormality
		Examples	I added a side dish of vegetables for my son. Soon he developed severe diarrhea, 10 times a day.
		Original topic	LDA topic: 22, 28
		Frequency (n)	1666

^aLDA: Latent Dirichlet Allocation.