![As I am (slowly) recovering from my hamstring injury of past Xmas, I entered the half-marathon race of the Greater Paris I had booked months ago, as the distance seemed within reach. Not expecting a great time. The route was impractical, from reaching the horse-track of Bois de Vincenne on the very day EU switches to CEST, with train shortages on both RER A and B, to running on bike paths, sidewalks, and canal paved decks, within a dense crowd. With very few Paris highlights beyond the 11th arrondissement City Hall and the finish on [a completely empty] Stade de France. Only perks were the start with a horse pulling a sulky and playing the hare, the cold windless rainless weather, and a pace runner at 1:30, whom I kept in sight for the whole race. Hence rather glad with the outcome. On the way to the train station, far from the official village, I came across a scientology tent offering... massages, a very first for me! As a minor inconvenience, my bib got mixed up with the bib of one of my students, which simply means my second position in the M5M group did not get recorded. Fortunately, she (I) just missed the 10th position on the female scratch podium, which would have deprived the actual 10th runner of her win!](https://i0.wp.com/xianblog.fr/wp-content/uploads/2025/03/granpari25.png?resize=450%2C356&ssl=1)

![As I am (slowly) recovering from my hamstring injury of past Xmas, I entered the half-marathon race of the Greater Paris I had booked months ago, as the distance seemed within reach. Not expecting a great time. The route was impractical, from reaching the horse-track of Bois de Vincenne on the very day EU switches to CEST, with train shortages on both RER A and B, to running on bike paths, sidewalks, and canal paved decks, within a dense crowd. With very few Paris highlights beyond the 11th arrondissement City Hall and the finish on [a completely empty] Stade de France. Only perks were the start with a horse pulling a sulky and playing the hare, the cold windless rainless weather, and a pace runner at 1:30, whom I kept in sight for the whole race. Hence rather glad with the outcome. On the way to the train station, far from the official village, I came across a scientology tent offering... massages, a very first for me! As a minor inconvenience, my bib got mixed up with the bib of one of my students, which simply means my second position in the M5M group did not get recorded. Fortunately, she (I) just missed the 10th position on the female scratch podium, which would have deprived the actual 10th runner of her win!](https://i0.wp.com/xianblog.fr/wp-content/uploads/2025/03/granpari25.png?resize=450%2C356&ssl=1)


While cooking for a late Sunday lunch today [sweet-potatoes röstis], I was listening as usual to the French Public Radio (France Inter) and at some point heard the short [10mn] Périphéries that gives every weekend an insight on the suburbs [on the “other side’ of the Parisian Périphérique boulevard]. The idea proposed by a geographer from Montpellier, Emmanuel Vigneron, was to point out the health inequalities between the wealthy 5th arrondissement of Paris and the not-so-far-away suburbs, by following the RER B train line from Luxembourg to La Plaine-Stade de France…
The disparities between the heart of Paris and some suburbs are numerous and massive, actually the more one gets away from the lifeline represented by the RER A and RER B train lines, so far from me the idea of negating this opposition, but the presentation made during those 10 minutes of Périphéries was quite approximative in statistical terms. For instance, the mortality rate in La Plaine is 30% higher than the mortality rate in Luxembourg and this was translated into the chances for a given individual from La Plaine to die in the coming year are 30% higher than if he [or she] lives in Luxembourg. Then a few minutes later the chances for a given individual from Luxembourg to die are 30% lower than he [or she] lives in La Plaine…. Reading from the above map, it appears that the reference is the mortality rate for the Greater Paris. (Those are 2010 figures.) This opposition that Vigneron attributes to a different access to health facilities, like the number of medical general practitioners per inhabitant, does not account for the huge socio-demographic differences between both places, for instance the much younger and maybe larger population in suburbs like La Plaine. And for other confounding factors: see, e.g., the equally large difference between the neighbouring stations of Luxembourg and Saint-Michel. There is no socio-demographic difference and the accessibility of health services is about the same. Or the similar opposition between the southern suburban stops of Bagneux and [my local] Bourg-la-Reine, with the same access to health services… Or yet again the massive decrease in the Yvette valley near Orsay. The analysis is thus statistically poor and somewhat ideologically biased in that I am unsure the data discussed during this radio show tells us much more than the sad fact that suburbs with less favoured populations show a higher mortality rate.
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