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Table 1 Characteristics of the Surveys

From: An international comparative study of blood pressure in populations of European vs. African descent

Country

Survey Yr(s)

Population

N

Male (%)

Participation Rate (%)

Age Range

Sampling Method*

Nigeria

1991–93

Local

1931

45

NA

25–74

Multistage, address

Jamaica

1993–95

Local

2573

41

65

25–74

Multistage, address

USA, NHANES Black

1988–94

National

5283

45

82

18–80+

Multistage, population registry

Canada

1986–92

National

23129

49

77.5

18–74

Multistage, medical insurance registries

England

1998

National

11884

45

87.5

16–80+

Multistage, post code address

Finland

1997

National

7064

47

72

25–64

Population registry

Germany

1997–99

National

7047

49

61.4

18–79

Population registry

Italy

1998

National

8233

50

-

35–74

Multistage, population registry

Spain

1990

National

2021

40

73

35–65

Multistage, national registry

Sweden

1999

Regional

1823

49

72

25–74

Population registry

USA NHANES White

1988–94

National

7252

46

82

18–80+

Multistage, population registry

  1. * All stratified sampling methods