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Table 2 Comparison of demographic characteristics of total sample and participant sample.

From: A cross-sectional study of vascular risk factors in a rural South African population: data from the Southern African Stroke Prevention Initiative (SASPI)

Variable Total sample (N = 525) Participant sample (N = 402)
Female 73.3 (69.3,77.0) 76.4 (71.9,80.4))
Age category (years)   
35–44 29.5 (25.7,33.6) 28.9 (24.5, 33.6)
45–54 26.3 (22.6, 30.3) 27.9 (23.5, 32.5)
55–64 18.1 (14.9, 21.7) 17.9 (14.3, 22.0)
65–74 15.1 (12.1, 18.4) 13.4 (10.3, 17.2)
75 plus 11.0 (8.5, 14.0) 11.7 (8.7, 15.2)
Household asset score*   
1 (low) 12.5 (9.80, 15.7) 13.3 (10.2, 17.1)
2 177 (14.5, 21.3) 15.4 (12.0, 19.3)
3 29.9 (26.0, 34.0) 30.5 (26.0, 35.3)
4 20.4 (17.0, 24.2) 22.9 (18.9, 27.4)
5 (high) 19.5 (16.1, 23.1) 17.9 (14.2, 22.0)
  1. Numbers shown are percentages and 95% confidence intervals.
  2. * A score based on type and size of dwelling; access to water and electricity; appliances and livestock owned and transport available.