Clinical features in primary care electronic records before diagnosis of ankylosing spondylitis: a nested case-control study.

ABSTRACT:

Background

Ankylosing spondylitis (AS) often has a long period from first symptom presentation to diagnosis. We examined the occurrence of symptoms, prescriptions and diagnostic tests in primary care electronic records over time prior to a diagnosis of AS.

Methods

Nested case-control study using anonymised primary care electronic health records from Scotland. Cases were 74 adults with a first diagnosis of AS between 2000 and 2010. Controls were matched for age, sex and GP practice: (a) 296 randomly selected adults (b) 169 adults whose records contained codes indicating spinal conditions or symptoms. We extracted clinical features (symptoms, AS-related disorders, prescriptions and diagnostic tests). Conditional logistic regression was used to examine the association between c

SUBMITTER: Bashir MT 

PROVIDER: S-EPMC7201706 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature