Funding for this research was provided by:
AFA Försäkring (160176)
Futurum - Akademin för Hälsa och Vård, Region Jönköpings läns (559951)
Forskningsrådet i Sydöstra Sverige (744201)
Text and Data Mining valid from 2020-01-06
Received: 26 September 2019
Accepted: 19 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Review Board in Gothenburg, Sweden (entry number 1059–16). All patients received oral and written information about their registration in the BOA Register. Regarding the reference cohort, informed consent was waived according to standard practice in Sweden, as no individuals in this population-based cohort used for analysis could be identified since the government agency Statistics Sweden replaces each PIN with a serial number to anonymize data before returning data to the researchers.
: Not applicable.
: Leif E Dahlberg is the co-founder and Chief Medical Officer of Joint Academy, a company which provides digital non-surgical treatment for patients with hip and knee osteoarthritis. The authors declare that they have no other conflicts of interest.