Fig. 3: Difference in first diabetic diagnosis flag from clinical records comparing clinical coding and abnormal HbA1c.
 = patients defined by both an abnormal HbA1c and diabetic clinical coding. 
 = patients defined by clinical coding as post-cancer diabetics but with abnormal HbA1c pre-cancer. Left of 
 = abnormal HbA1c earlier than clinical coding. Right of 
 = clinical coding earlier than abnormal HbA1c.
