February BEMC Talk: Rasch Modeling, QA for categorical data

Dear BEMC Community,

We’ve got another great BEMC Talk coming up for you (including a bonus hands-on workshop!)

“How to calibrate a questionnaire: quality-assuring categorical data with psychometric measurement theory” – Prof. Leslie Pendrill (RI:SE Metrology, Gothenburg)

Date: Wednesday, February 7th, 2018 /   Time: 4:00pm

Optional hands-on workshop to follow at 5:15pm, important: bring your laptops with MINISTEPS installed (free!) http://www.winsteps.com/ministep.htm

Space for both events is limited, so please register here in advance: https://goo.gl/forms/ukf6IavdmH04deOs2

We need your help! Please complete these two very short (1 min/each) questionnaires ahead of time so we have some data! Go to www.menti.com

->survey 1 code: 383775 , survey 2 code: 277042

Location: Seminar room of the Neurology Clinic, first floor (Alte Nervenklinik) – follow our signs, Bonhoefferweg 3, Charité Universitätsmedizin Berlin- Campus Mitte, 10117 Berlin–> see Campus Map


Measurements in the social sciences – with ‘instruments’ such as questionnaires, ability tests, – in education, healthcare and so on, need metrological quality assurance. A patient, for instance, expects the same quality of care wherever and whenever provided. This is a challenge since the usual tools of statistics do not always work on the categorical scales typical of such measurements. Modelling a measurement system where the instrument is a human being, and where the output is a performance metric, i.e., how well the set-up performs an assessment, appears to be a way forward. This BEMC Colloquium will present the necessary tools, such as psychometric Rasch measurement theory, and will be followed by a hands-on workshop where you yourselves can analyse cases such as (i) the Quality of the BEMC Colloquium Series and (ii) a Healthy Lifestyle.

Please share this invite with colleagues. Hope to see you there!

Coming up: we are trying something new – a BEMC journal club. Every third Wednesday of the month, we’ll read a paper together. Want to know more? Check out our website for the full schedule of JClub and Talk events and more info. 

Follow us on Twitter: @bemcolloquium

December Invite: Machine Learning in Epi

Dear BEMC Community,

We would like to invite you to the upcoming December Berlin Epidemiological Methods Colloquium:

“Machine Learning in Epidemiology”
Speaker: Dr. André Karch (Helmholtz Centre for Infection Research, Braunschweig)
Date: Wednesday, December 6th, 2017 / Time: 4:00pm – 6:00pm

Space is limited, so please register here in advance.

Location: Seminar room of the Neurology Clinic, first floor (Alte Nervenklinik)
Bonhoefferweg 3, Charité Universitätsmedizin Berlin- Campus Mitte, 10117 Berlin
Campus Map

Description: Big data, machine learning, and personalized prediction are the hot topics of biomedical research in the 21th century. But how do these abstract terms translate into everyday practice? How do they affect the way we think in epidemiology? What implications do they have for data analysis strategies and replication studies? In his talk, Dr. Karch will give a short introduction into machine learning algorithms, discuss opportunities and limitations of different concepts, and will show how machine learning can contribute to epidemiological research using examples from microbiome studies.

Please feel free to forward this invitation to anyone who might be interested.
Hope to see you there!

Best wishes,
Jessica Rohmann, Bob Siegerink, and Tobias Kurth

PS: Follow us on Twitter: @bemcolloquium