Table 3 Ratios of Predicted to Observed Hypertension Incidence in each Decile of the Risk Predicted by the Framingham Risk Score

Original model

Predicted, n^a

0.8

2.2

4.1

6.7

10.3

15.4

23.1

35.4

59.3

139.8

Observed, n^b

0

5.4

4.2

9.3

14.7

24.5

47.8

48.7

75.9

173.1

Ratio P: O

–

0.41

0.97

0.72

0.72

0.63

0.48

0.73

0.78

.081

Recalibrated for intercept

Predicted, n

0.69

2.1

4.0

6.9

11.1

17.2

26.8

42.6

74.3

182.3

Observed, n

0

4.2

4.2

9.3

14.7

24.5

47.8

48.7

75.9

173.1

Ratio P: O

–

0.38

0.96

0.75

0.76

0.70

056

0.87

0.98

1.05

Recalibrated for intercept & slop

Predicted, n

1.3

3.5

6.2

9.9

14.8

21.6

31.5

46.7

75.0

163.0

Observed, n

0

5.4

4.2

9.3

14.7

24.5

47.8

48.7

75.9

173.1

Ratio P: O

–

0.65

1.5

1.07

1.01

0.88

0.66

0.96

0.99

0.94

Revised for the coefficient of sex

Predicted, n

1.1

3.1

5.8

9.2

14.0

21.0

31.3

47.2

76.3

165.4

Observed, n

0

4.2

4.1

9.0

11.9

30.9

39.2

52.5

79.2

172.7

Ratio P: O

–

0.73

1.4

1.02

1.2

0.68

0.80

0.90

0.96

0.96