Variable

Mean CCT

Standard deviation

p-value

Age

18 - 35 yrs

540.9

73.13

0.012

>35 - 50 yrs

538.4

41.76

0.023

>50 yrs

530.9

36.76

Gender

Male

541.2

36.66

Female

537.3

44.44

0.438

Ethnic group

Bantu

538.4

43.10

Nilotics

542.9

36.56

0.205

Nilo-hamites

544.5

31.78

0.56

Others

537.3

40.55

0.664