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Table 4 Comparison between type 2 diabetes prevalence registered in the primary care EHR database and self-reported prevalence from a health survey

From: Validity of type 2 diabetes diagnosis in a population-based electronic health record database

  Diabetes prevalence in 2003 (health survey) Population in primary care EHR database in 2005 Expected cases in 2005 according to the health survey prevalence Registered cases in primary care EHR (code T90) in June 2005 Ratio between registered and expected cases
  % n n n % %
Men       
35–44 years 1.5 48,244 723 525 1.1 72.6
45–54 years 4.7 38,169 1803 1568 4.1 87.0
55–64 years 11.1 30,974 3442 3226 10.4 93.7
65–74 years 17.7 23,003 4064 3643 15.8 89.7
75–84 years 20.3 15,567 3166 2311 14.8 73.0
35–84 years   155,957 13,198 11,273   85.4
Age-adjusted prevalence
(95% CI%)
8.5     7.2  
(7.1–9.8)   (7.2–7.3)
Women       
35–44 years 0.6 44,431 269 290 0.7 107.7
45–54 years 2.1 36,546 771 708 1.9 91.8
55–64 years 4.2 30,832 1282 1970 6.4 153.7
65–74 years 11.2 25,855 2904 3121 12.1 107.5
75–84 years 16 22,261 3557 3288 14.8 92.5
35–84 years   159,925 8783 9377   106.8
Age-adjusted prevalence
(95% CI)
5.5     5.9  
(4.4–6.6)    (5.8–5.9)  
  1. Abbreviations: EHR electronic health record