I thought this may be of interest to some. In the interest of exploring differences between DO and MD training for myself, I picked two schools more or less at random and compared the curricula of each. I realise that there is great variation among schools, but it was a neat excersize to see some differences, for whatever its worth. I broke down approximate time spent (in weeks) for each course (no way to easily know how much in class/lab time in hours). This is just for fun, don't mean to draw flames. Keep in mind these are the required course for each school, does not count electives. Here is what I found:
Gross Anatomy - Same in both DO and MD, 20 weeks
Physiology, Histology, and Embryology - All more heavily emphasized by MD,
+22 extra weeks combined
Biochem and Molecular Cell Bio - More emphasis by MD (14 extra weeks)
All of the introductory "patient" courses and "how to be a doc" stuff - hard to compare because the courses were different. Both had a lot of emphasis.
Microbiology and Immunology - DO had separate course, MD combined. More time spent by DO (+14 weeks)
Neuroscience - MD wins. +4 weeks
Psychiatry and Psychopathology - DO wins by landslide (+24 weeks)
Pathology - MD wins big (+14 weeks)
Pharmacology - MD wins (+10 weeks)
OMM - 60 weeks (continuous for years 1 and 2) for DO. None for MD (to be expected)
Summary:
Tied on Gross anatomy and clinical introduction/background/skills
MD wins with Physiology, histology, development, biochem, neuroscience, pharmacology, pathology
DO wins with Psychiatry, Microbiology/immunology, and OMM
Impressions: MD emphasizes physiological and pathological sciences
DO emphasizes psychiatry and OMM