To: Road Walker who wrote (3663 ) 1/15/2008 5:47:34 PM From: TimF Read Replies (1) | Respond to of 42652 "...If we put the partisanship aside, and view this as raw statistics, what lessons can be drawn? The biggest surprise is Japan -- a country whose health care institutions are not generally popular -- at number two. Spain and Italy and #4 and #5 are less extreme examples of the same point. Do the Germans and Danes really kill so many extra people through their health care systems? Would you really rather get sick in Greece? Nothing in this post is intended as apology for the United States health care system, but if we are going to look at the numbers let's consider all of them. If there is any lesson about the French -- who are a clear first -- it is that they do something right for health care apart from having so much government involvement. What might that be? What do we learn about what makes for a good health care system? Is there a correlation between health care performance and policy? I don't see it, maybe there is one, but I'm wondering if people are willing to draw lessons from this diagram consistently or not. I might add I find it easy to believe that American health care institutions make a disproportionate share of stupid errors, or are responsible for lots of patient mistreatments, so I am not trying to undo our presence on the right hand side of this graph. I do, however, walk away suspicious of the concept of "amenable" mortality..."marginalrevolution.com Unless I'm missing something this study is naive in the extreme. Let me enumerate a few ways it is deficient: 1) The study does not adjust for dietary differences. No, it is not the job of the health care system to force people to eat a Mediterranean diet. No, your doctor can't force you to lose weight. 2) The study does not adjust for geographical differences. In some places it is easier to get exercise all year around and get sun and therefore vitamin D all year around. That extends life. 3) The study doesn't adjust for population density. This has many longevity effects including distance to emergency room and likelihood of getting exercise. 4) The study doesn't adjust for lifestyle differences such as amount of exercise. 5) The study doesn't adjust for genetic differences. The racial and ethnic groups differ in their frequencies of alleles that affect risk of cancer, heart disease, Alzheimer's, and assorted other diseases. Also, skin color differences cause differences in vitamin D synthesis rates and folic acid destruction rates. Most of the ways that life expectancy differs are outside of the control of health care delivery systems. Until social scientists accept evolution and biology they are going to keep grinding out lots of crap studies. Posted by: Randall Parker at Jan 13, 2008 2:24:21 PM Randall Parker, Not to mention differences between countries in violent crime rates, differences in accident rates, differences in stress levels arising from differences in work patterns, family and community life, differences in pollution levels, differences in climate, differences in rates of smoking, alcohol and drug use, and so on. Each of these variables, and numerous others, may significantly affect mortality rates independently of any effects from the health care system. Posted by: Jason at Jan 13, 2008 3:17:42 PM Jason, Yes, it is extremely difficult to tease out causes for differences in mortality because there is such an incredibly long list of factors that influence longevity. This is an area where I read and blog about alot because I have a strong desire to not die. Studies done on longevity always end up having sources of error in them and successive studies contradict the results of earlier studies. I've been reading in this area for decades and I am not sure about the influence of many factors on longevity and I know there's a lot of uncertainty among many researchers who are focused on, say, dietary factors for example. These jokers come along and make some ridiculous simplifying assumptions and then draw equally ridiculous conclusions. I think these researchers are lightweights. This isn't easy stuff to tease apart. Look at the arbitrary assignment of lifestyle as the cause of half of heart disease. The average amount by which lifestyle impacts heart disease varies from country to country by a substantial amount. It gets even worse. People in different countries have different average genetic predispositions to heart disease. It gets even worse. If people eat a diet that, say, increases their risk of a certain kind of cancer they'll be less likely to get heart disease in the first place since they'll die sooner from cancer before getting heart disease. How to control for that? It is somewhere between very hard and impossible. Other researchers have approached international comparisons in relatively less naive ways such as to compare clinical outcomes once diagnosis has been made. But even comparisons between countries on survival rates of particular types of cancers are biased by whether diagnoses happen at earlier or later stages in some countries and by genetic factors that influence your odds. Heck, even diet influences survival odds once diagnosed. Do the heart disease patients change their diets in France or the US or Japan better once diagnosed? You'd have to find out before trying to compare quality of clinical care. Posted by: Randall Parker at Jan 13, 2008 4:29:58 PM