Final answer:
Sociology of medicine focuses on social factors that influence medical practices, sociology in medicine applies sociological theories in medicine, and health sociology explores the social determinants of health and illness.
Step-by-step explanation:
The differences among sociology of medicine, sociology in medicine, and health sociology in terms of units of analysis lie in their specific focuses within the field of medical sociology.
Sociology of medicine examines the social factors that influence medical practices, such as doctor-patient relationships, the structure of healthcare systems, and cultural attitudes towards disease and wellness.
Sociology in medicine refers to the application of sociological theories and methods within the practice of medicine, such as understanding how social factors impact health outcomes and the delivery of healthcare.
Health sociology is a broader field that explores the social determinants of health and illness, including the impact of social inequalities, social norms, and social interactions on individual and population health.