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Table 7 PP levels by seven waves

From: Blood pressure and hypertension prevalence among oldest-old in China for 16 year: based on CLHLS

Variable

Wave

1998

2000

2002

2005

2008

2011

2014

p

PP

Gender

 

Male

63.4 ± 19.1

55.6 ± 18.8

49.6 ± 15.0

48.9 ± 16.5

56.3 ± 19.9

56.0 ± 16.8

59.1 ± 17.6

< 0.001

 

Female

64.4 ± 20.3

55.9 ± 19.5

48.8 ± 14.8

48.5 ± 16.5

57.4 ± 20.4

58.4 ± 18.8

60.6 ± 19.4

< 0.001

 

p

0.021

0.427

0.012

0.195

0.008

< 0.001

0.009

 
 

Age-group

 

80–89 yrs

65.4 ± 19.9

56.6 ± 19.6

49.9 ± 15.3

49.2 ± 16.5

59.0 ± 20.3

58.0 ± 17.0

60.2 ± 17.8

< 0.001

 

90–99 yrs

63.9 ± 19.6

55.8 ± 19.4

49.0 ± 15.0

49.2 ± 17.0

56.5 ± 20.3

57.7 ± 18.6

60.1 ± 19.3

< 0.001

 

100- yrs

62.1 ± 19.9

54.0 ± 18.1

48.1 ± 14.5

47.1 ± 15.7

55.0 ± 20.0

56.0 ± 19.0

59.0 ± 19.8

0.247

 

p for trend

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

0.004

0.244

 
 

Category of residence

 

City

63.6 ± 19.9

55.1 ± 19.0

48.5 ± 14.6

46.9 ± 15.8

54.0 ± 18.9

55.8 ± 16.6

56.3 ± 17.1

< 0.001

 

Town

55.5 ± 18.7

48.8 ± 14.2

49.1 ± 15.4

55.8 ± 19.5

56.5 ± 17.0

59.8 ± 17.9

< 0.001

 

Rural

64.6 ± 19.8

56.5 ± 19.7

50.8 ± 16.1

49.1 ± 17.2

58.3 ± 20.7

58.5 ± 19.0

61.1 ± 19.4

< 0.001

 

p for trend

0.024

0.008

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

 
 

Region of China

 

East

64.9 ± 19.5

56.9 ± 19.0

49.6 ± 14.4

53.7 ± 20.3

63.2 ± 21.6

60.6 ± 19.0

61.1 ± 19.5

< 0.001

 

Central

63.7 ± 20.0

53.5 ± 18.5

49.5 ± 16.1

47.8 ± 14.2

56.0 ± 20.9

53.8 ± 17.0

58.8 ± 18.0

< 0.001

 

West

62.4 ± 20.4

52.3 ± 18.6

49.4 ± 15.2

46.7 ± 14.7

55.9 ± 19.5

53.7 ± 14.5

56.5 ± 16.3

< 0.001

 

p for trend

< 0.001

0.908

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

 

Total

64.1 ± 19.8

55.2 ± 18.9

49.5 ± 15.0

48.8 ± 16.6

57.1 ± 20.5

57.7 ± 18.1

59.9 ± 18.8

< 0.001

PP among those without hypertension

Gender

Male

55.4 ± 15.7

48.2 ± 14.1

45.7 ± 12.6

43.8 ± 10.3

47.4 ± 11.3

47.7 ± 10.2

48.8 ± 9.7

< 0.001

Female

56.0 ± 16.7

47.8 ± 14.8

44.9 ± 11.9

43.4 ± 10.5

47.2 ± 11.7

47.1 ± 10.8

48.2 ± 11.0

< 0.001

p

0.209

0.377

0.006

0.189

0.543

0.127

0.247

 

Age-group

80–89 yrs

57.2 ± 16.2

48.6 ± 15.1

45.9 ± 12.6

44.2 ± 10.4

48.2 ± 11.7

48.1 ± 10.3

49.0 ± 9.8

< 0.001

90–99 yrs

55.5 ± 16.1

48.1 ± 14.7

45.3 ± 12.3

43.8 ± 10.3

46.9 ± 11.4

47.3 ± 10.4

48.8 ± 10.9

< 0.001

100- yrs

54.4 ± 16.1

46.6 ± 13.0

44.3 ± 11.5

42.6 ± 10.4

46.7 ± 11.5

46.3 ± 11.0

46.6 ± 11.0

0.611

p for trend

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

 

Category of residence

City

55.5 ± 16.3

47.9 ± 14.3

44.9 ± 12.0

42.6 ± 9.6

46.6 ± 11.4

47.1 ± 11.0

47.8 ± 10.1

< 0.001

Town

48.0 ± 14.1

45.0 ± 11.8

43.3 ± 10.5

47.2 ± 11.6

47.4 ± 10.0

48.3 ± 10.5

< 0.001

Rural

56.3 ± 16.4

48.0 ± 15.1

46.3 ± 12.8

44.0 ± 10.6

47.5 ± 11.6

48.1 ± 10.7

49.0 ± 10.6

< 0.001

p for trend

0.012

0.960

0.001

< 0.001

0.059

0.150

0.210

 

Region of China

East

56.3 ± 15.9

49.1 ± 14.6

45.7 ± 11.4

42.4 ± 10.2

47.3 ± 10.7

49.0 ± 10.6

48.7 ± 10.4

< 0.001

Central

55.5 ± 17.3

45.7 ± 14.2

45.3 ± 14.3

45.2 ± 10.0

45.5 ± 12.3

44.9 ± 10.6

48.4 ± 10.2

< 0.001

West

55.3 ± 16.1

47.3 ± 13.5

45.2 ± 11.3

44.8 ± 11.0

50.7 ± 13.1

47.4 ± 9.9

47.4 ± 10.6

< 0.001

p for trend

0.190

< 0.001

0.514

< 0.001

< 0.001

< 0.001

0.078

 

Total

55.9 ± 16.3

47.8 ± 14.4

45.3 ± 12.2

43.6 ± 10.4

47.2 ± 11.7

47.5 ± 10.6

48.3 ± 10.4

< 0.001

  1. *:City and town were combined as one category in 1998 wave