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. 2021 Feb 17;21:367. doi: 10.1186/s12889-021-10356-0

Table 1.

Sample characteristics of the enrolled population

Subgroups
(N)
Treatment conditions
Total
(4099)
Control
(1009)
EU CDC
(628)
WHO
(526)
SMOH
(639)
BIT
(606)
UK Gov
(661)
Age group
 18–39 years 46.7 46.6 48.6 45.3 47.6 46.9 45.5
 40–59 years 31.6 31.7 30.1 33.5 30.7 31.5 32.1
  ≥ 60 years 21.7 21.7 21.3 21.2 21.8 21.6 22.4
Education
 Degree 25.2 23.2 26.3 26.8 25.7 25.6 25.3
 No degree 72.8 74.6 72.0 70.9 72.1 72.3 73.8
 Prefer not to say 1.9 2.2 1.8 2.3 2.2 2.1 0.9
Sex
 Men 51.2 50.3 50.6 53.4 53.1 51.2 49.5
 Women 48.8 49.7 49.4 46.6 46.9 48.8 50.5
Ethnicity
 White 86.0 85.9 87.7 86.3 85.8 83.5 86.5
 Black 3.0 3.4 2.5 2.9 3.1 3.1 2.6
 Asian 7.0 6.9 6.2 5.4 8.0 8.9 6.2
 Mixed/other 4.1 3.8 3.5 5.4 3.1 4.5 4.7

Values refer to percentages of each group