The abbreviation MDAS stands for Multiplication, Division, Addition, and Subtraction, the order of operations for expression and equations with more than one operation and no parentheses. MDAS AB is a Swedish limited company providing expertise in medical statistics for medical research and scientific publication. The company is founded and directed by Jonas Ranstam 🔗.

Consulting services

  • Study design
  • Data collection
  • Analysis
  • Reporting
  • Reviewing

Contact information


Encryption:     Public PGP key 🔗

Personal messaging:   (Matrix)
+46 723 169595   (Signal & WattsApp)
@jonasranstam   (Telegram)

Voicemail:     +46 723 169595

Office:     Rotfruktsgatan 12B
SE-27154 Ystad

File Transfers

Documents and data can be securely uploaded directly to Mdas' server in Sweden here:  
Recommended encryption for transfer by other means: Open PGP 🔗 or AES Crypt 🔗.

Links for downloading documents from the server are sent by email.