redfiona99: (cycling)
[personal profile] redfiona99
We've reached that stage of the year where people desperately try to tidy up the things they didn't quite get around to finishing.

I have a better excuse than usual for not posting these, because I was flying off to the US when the racers were flying up the Champs-Élysées, and then I got distracted by the Women's World Cup (https://fulltimesportsfan.wordpress.com/2023/08/03/womens-world-cup-2023-last-16-network-diagrams/) when I got back.

It's a particular shame because I had finished writing up my notes, and just needed the last day of racing to finish off the diagrams.

The last week featured Pogacar cracking, which somewhat overshadowed an Austrian winning the queen stage!!!!! (https://www.bbc.co.uk/sport/cycling/66248827)

Poor Simon Geschke had to literally race the broom wagon on stage 17 (https://twitter.com/GcnRacing/status/1681730004223180812). Although he won, and bless the broom wagon driver for cheering him on, he had to withdraw in the middle of stage 18. Yes, in the Tour de France, the elimination line is not something high tech and digital, it's a man in a van, and I'm sorry this is part of why I love cycling.



Week-3-withdrawals





Riders-Remaining


Cofidis and Movistar both lost half of their riders, while UAE, FDJ, Bora-Hansgrohe, AG2R, Israel Premier Tech, Jayco, Arkea and Uno-X didn't lose a single rider.



Kaplan-Meier-by-team

EF's green unfortunately covers up the same thing happening to Movistar.




Kaplan-Meier-overall



Comparing the withdrawals to the 2020, 2021 and 2022 Tours de France,
Kaplan-Meier-compared-to-other-years



2021 and 2022 have very similar shapes, while 2023 looks more like 2020.

I briefly had access to PRISM, so I ran the data through that too.



TDF-2020-2023



That figure made me feel good because my home-brew version looks very similar to it, so I don't think I'm going too wrong with my methodology.

The main reason I wanted to run it through PRISM is because it provides statistical analysis of Kaplan Meier diagrams. By eye (https://fulltimesportsfan.wordpress.com/2022/05/18/for-guts-or-for-glory-was-the-2021-tour-de-france-attrition-rate-influenced-by-the-upcoming-olympics/) it already looked like the Olympics in 2021 didn't have an effect on the withdrawal rate and PRISM confirmed that view by saying there was no statistical difference in the withdrawals in the different years.



Withdrawal-by-stage-in-order-of-stage

Withdrawal-by-stage-in-order-of-number-of-withdrawals


Stage 14 was the stage with the most withdrawals by a long way. To refresh your memory, it was a combination of a slippy road, a turn and ill-fortune that took down a swath of riders (https://www.eurosport.co.uk/cycling/tour-de-france/2023/tour-de-france-neutralised-after-extraordinarily-nasty-moment-on-stage-14-involving-almost-all-teams_vid1951457/video.shtml)

The really interesting thing was that there were no

All-withdrawals


I don't know if this is because there isn't as big a difference between the top riders and those at the bottom, that the stages were shorter so it reduces the risk, or whether people were seeing sense after accidents and withdrawing there and then, but it's an interesting fact.



Week 2 was the worst for withdrawals with almost half of all withdrawals occurring then, with week 1 and 3 being as bad as each other:

All-withdrawals-by-week

This is because of mid-stage abandonments, because relatively few of the DNS withdrawals were in week 2.

DNS-per-week

Abandonments-per-week



Things I will look out for next year?

Whether this "no outside the time limit withdrawals" pattern happens again next year, and whether the curve shape is the same again, next year being another Olympic year.

Related posts to look forward to this year (or at the start of next year) - the equivalent post for the women's Tour de France 2023.

Date: 2023-11-18 05:13 pm (UTC)
ioplokon: purple cloth (Default)
From: [personal profile] ioplokon
Not to give you more work, but for the women's TdF, would also be interesting to look at the riders' training programs. Some of them like to do a race the week before & roll that into the TdF, I think. Would be interesting to see the performance differences as some people (me) think that one issue w/ women's cycling is that the races are too short...

Date: 2023-11-18 09:42 pm (UTC)
ioplokon: purple cloth (Default)
From: [personal profile] ioplokon
What do podiumcafe use for VDS? They have all the entrants for every race & placements...

Date: 2024-03-03 04:04 pm (UTC)
ioplokon: purple cloth (Default)
From: [personal profile] ioplokon
:o

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