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Table 1 Summary of grouped counties with different changing death rates (OK-estimated) of CHD and stroke in two periods (1991–1995 and 2006–2009)

From: Spatiotemporal variations in cardiovascular disease mortality in China from 1991 to 2009

Parameters

CHD

Stroke

Group I

Group II

Group III

Group IV

Group V

Group I

Group II

Group III

Group IV

Group V

Number of counties

257

947

854

417

394

1597

873

249

96

54

Percentage

9%

33%

30%

14%

14%

56%

30%

9%

3%

2%

 Mean mortality in 1991–1995

68.53

54.14

44.14

41.04

37.27

187.57

130.93

94.76

69.01

41.21

 Mean mortality in 2006–2009

57.52

67.39

76.1

90.73

110.59

140.5

155.87

159.47

149.91

132.63

Significance (p-value)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

  1. According to the difference of OK-estimated death rates of CVD (CHD and stroke) in these two periods (1991–1995 and 2006–2009), all the counties were classified into five groups (I: < 0%, II: 0–50%, III: 50–100%, IV: 100–150%, and V: > 150%). Accordingly, the number of counties in each group and their percentages were respectively obtained. The paired T-test was applied for the comparison of OK-estimated CVD death rates of each group
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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