Figure 1.
Data types contributing to characterisation of a clinical entity.
Figure 2.
Schematic model of the GPRD database.
Figure 3.
A priori and a posteriori strategies for developing code lists.
Table 1.
Initial list of indicator markers for early inflammatory arthritis across different clinical domains, based on round-table clinical discussions.
Figure 4.
Indicator marker groups.
Table 2.
Prevalence of indicator markers during study period.
Table 3.
Frequency of combinations of indicator markers.
Table 4.
Intervals between first indicator marker and diagnosis in RA cases (days).
Figure 5.
Survival curves for selected indicator markers in the 3
years preceding RA diagnosis, by gender.