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Table 3 Main demographic characteristics of the population of patients over 18 years old attended in Health Area 4 and of samples.

From: Validation of diabetes mellitus and hypertension diagnosis in computerized medical records in primary health care

 

N

(%)

Age (years)

median (IQR)

Age ≥ 70 years

(%)

Gender female

(%)

DM

(%)

Patients with diagnosis code of diabetes (T-90)

32,377 (5.02)

71.15 (60.03-78.95)

52.37

50.83

 

Sample of patients with diagnosis code of diabetes (sample 1)

423 (1.31)

70.31 (60.22-78.20)

50.83

50.83

 

   - Correct diagnosis (TP)

421 (99.53)

70.31 (60.25-78.43)

50.83

50.83

 

   - Incorrect diagnosis (FP)

2 (0.47)

64.33 (51.22-77.44)

50

50

 

Patients without diagnosis code of diabetes (T-90)

612,896 (94.98)

43.63 (33.27-60.08)

14.85

56.34

 

Sample of patients without diagnosis code of diabetes (sample 2)

392 (0.06)

69.66 (59.57-78.05)

49.2

51.8

 

   - Correct diagnosis (TN)

390 (99.49)

69.66 (59.52-78.03)

49.2

51.8

 

   - Incorrect diagnosis (FN)

2 (0.51)

74.23 (62.79-85.67)

50

50

 

Patients with diagnosis code of hypertension (K-86 ó K-87)

91,065 (14.11)

71.96 (61.66-79.41)

54.53

58.58

21.55

Sample of patients with diagnosis code of hypertension (sample 3)

423 (0.46)

72.63 (61.56-79.40)

57.92

58.63

24.59

   - Correct diagnosis (TP)

415 (98.11)

72.67 (61.65-79.40)

58.31

58.55

24.82

   - Incorrect diagnosis (FP)

8 (1.89)

64.00 (55.18- 76.86)

37.5

62.5

12.5

Patients without diagnosis code of hypertension (K-86 or K-87)

554,208 (85.89)

41.47 (32.21-54.68)

10.52

55.65

2.3

Sample of patients diagnosis code of hypertension (sample 4)

326 (0.06)

70.35 (61.77-79.27)

57.98

57.06

14.72

   - Correct diagnosis (TN)

254 (77.91)

71.68 (61.15-78.26)

53.15

57.48

8.66

   - Incorrect diagnosis (FN)

72 (22.09)

77.74 (69.32-83.99)

75

55.56

36.11

  1. IQ: interquartile range; TP: true positive; FP: false positive; TN: true negative; FN: false negative; DM: diabetes mellitus.