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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