Fabian Gülzau
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fguelzau.bsky.social
Fabian Gülzau
@fguelzau.bsky.social
1.1K followers 770 following 100 posts
Researcher @svrmigration.bsky.social | research: migration, citizenship, borders, social inequality
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fguelzau.bsky.social
Vielleicht gibt es etwas beim @rki.de ?
Impfquoten
Aktuelle belastbare Daten zum Immun- und Impfstatus der Bevölkerung sind für die Formulierung und Evaluation von Impfempfehlungen und Impfprogrammen unerlässlich. Sie können Hinweise zur Umsetzung der...
www.rki.de
November 28, 2025 at 3:31 PM
fguelzau.bsky.social
There‘s data on childcare fees 📊
lisadu.bsky.social Lisa-Marie Duletzki @lisadu.bsky.social · Aug 8
Thanks for the tag @ckronenberg.bsky.social! RWI has collected some data on county level for childcare fees. We see a lot of variation for under three (left) and less so for 3-6 (right). There is still some data prep in process but it is generally available at: doi.org/10.7807/immo...
November 27, 2025 at 5:59 PM
fguelzau.bsky.social
Congrats! Well deserved.
November 27, 2025 at 4:00 PM
fguelzau.bsky.social
Should we expect a negative effect when a villain enters the metro?
November 25, 2025 at 2:31 PM
fguelzau.bsky.social
Congrats 🎉
November 24, 2025 at 12:31 PM
fguelzau.bsky.social
In case you want to double check. I think there are multiple capable packages by now.
A package to translate between occupational classes in R. Currently translate ISCO68/88/08 to dozens of occupational classes
Translating between ISCO class schemas to other schemas is a difficult problem since most translations are scattered around the internet. This packages implements most available translations available...
cimentadaj.github.io
November 20, 2025 at 6:00 PM
fguelzau.bsky.social
More detailed information on the study 🔍:
deutschmann.bsky.social Emanuel Deutschmann @deutschmann.bsky.social · 14d
New #openaccess study

We made >16,000 visa appointment requests at German embassies and consulates worldwide

Key finding: The poorer the country, the longer the wait time and the lower the chance to get an appointment.

"A time panelty for the Global South?"
shorturl.at/ZiAFb
Visas are a key tool for states to regulate incoming mobility from abroad, which can have ramifications for the establishment and perpetuation of global inequalities. In this article, we systematically analyze visa appointment wait times in German embassies and consulates worldwide. Using computational methods, we collect—and publish—fine-grained longitudinal data on the closest available appointment dates for various visa types, covering a total of 16,182 visa appointment requests. Our analysis reveals strong and systematic variance: the poorer the country a diplomatic mission is based in, the longer the wait time and the lower the chances of finding an available appointment (which ranges from almost 0 to 100 percent). We also argue that Germany’s system is quite opaque compared to other established immigration countries such as the U.S. These core findings raise important questions in light of current debates about global justice, legal pathways to migration, and efforts to attract foreign talent. Graph that shows that 44.1 percent of requests did not lead to an appointment that could be selected. For the 55.9 percent where an appointment was available the distribution of wait times follows a steep curve with short wait times in many cases and a long tail of few cases with very long wait times of up to 98 days. The average wait times and chances to find an appointment varied a lot between Germany's diplomatic missions. The latter range from almost 0 to 100 percent. This variance is not random. Rather, economic wellbeing (GDP per capita) is a key predictor of wait times and chances of finding an appointment. The poorer the country a German embassy/consulate is based in, the longer the wait time and the lower the chances of finding an appointment.
November 19, 2025 at 10:40 AM
fguelzau.bsky.social
May be of interest to anyone who's been following this 🧵:
fguelzau.bsky.social Fabian Gülzau @fguelzau.bsky.social · Sep 9
Striking visualisation of the global mobility divide! Also chance to highlight some relevant research... 🧵
nrennie.bsky.social Nicola Rennie @nrennie.bsky.social · Sep 9
There was lots of data to play with for #TidyTuesday this week where we're looking at the power of different passports! ✈️

I decided to try out the idea of using small multiples and highlighting to untangle a spaghetti chart with lots of lines 📊

#RStats #DataViz #ggplot2
November 19, 2025 at 9:34 AM