Skip to main content

Table 4 Comparison of information available from codes and keywords in year preceding diagnosis in RA patients

From: Optimising the use of electronic health records to estimate the incidence of rheumatoid arthritis in primary care: what information is hidden in free text?

  MEN WOMEN
Topic Neither Code only Keyword only Both Neither Code only Keyword only Both
Inflammatory arthritis
n 1,483 146 287 91 3,278 312 633 157
(%) (73.9) (7.3) (14.3) (4.5) (74.8) (7.1) (14.5) (3.6)
Synovitis
n 1,598 30 344 35 3,531 60 735 54
(%) (79.9) (1.5) (17.1) (1.7) (80.6) (1.4) (16.8) (1.2)
Rh Factor test         
n 646 450 247 664 1,404 943 579 1,454
(%) (32.2) (22.4) (12.3) (33.1) (32.1) (21.8) (13.2) (33.2)