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Table 3 Apparent prevalence (diagnosis in the EMR) and true prevalence (fulfilment of the diagnostic criteria) of AF in patients aged 18 or over in primary health care centers of the Community of Madrid

From: Real-world data in primary care: validation of diagnosis of atrial fibrillation in primary care electronic medical records and estimated prevalence among consulting patients’

ALL

N

n

Apparent prevalence

True prevalence

Total

5,040,988

116,790

2.32 (2.3–2.33)

2.41 (2.39–2.42)

 18–50

2,761,166

3578

0.13 (0.13–0.13)

0.11 (0.1–0.11)

 >50–60

880,580

6826

0.78 (0.76–0.79)

0.79 (0.77–0.81)

 >60–70

626,926

17,901

2.86 (2.81–2.9)

2.97 (2.92–3.01)

 >70–80

436,045

34,110

7.82 (7.74–7.9)

8.19 (8.11–8.27)

 >80

336,271

54,375

16.17 (16.05–16.29)

16.95 (16.95–17.08)

FEMALE

N

n

Apparent prevalence

True prevalence

Total

2,653,677

57,871

2.18 (2.16–2.2)

2.25 (2.24–2.27)

 18–50

1,395,907

778

0.06 (0.05–0.06)

0.04 (0.04–0.05)

 >50–60

456,252

1961

0.43 (0.41–0.45)

0.43 (0.41–0.42)

 >60–70

338,843

6785

2 (1.96–2.05)

2.07 (2.02–2.12)

 >70–80

244,789

15,739

6.43 (6.33–6.53)

6.67 (6.57–6.77)

 >80

217,886

32,608

14.97 (14.82–15.12)

15.55 (15.4–15.7)

MALE

N

n

Apparent prevalence

True prevalence

Total

2,387,311

58,919

2.47 (2.45–2.49)

2.58 (2.56–2.6)

 18–50

1,365,259

2800

0.21 (0.21–0.21)

0.18 (0.17–0.19)

 >50–60

424,328

4865

1.15 (1.11–1.18)

1.18 (1.14–1.21)

 >60–70

288,083

11,116

3.86 (3.79–3.93)

4.05 (3.98–4.12)

 >70–80

191,256

18,371

9.61 (9.47–9.74)

10.14 (10–10.28)

 >80

118,385

21,767

18.39 (18.17–18.61)

19.44 (19.22–19.67)