TABLE 1.

Characteristics of the study population (n = 2131)

Characteristic	N	Mean ± SD a	%
Age, years	2131	54.6 ± 7.4
Sex, %
Male	1047		49.1
Female	1084		50.9
Race, %
White	2063		96.8
Non‐White	68		3.2
Education level, %
O level and less	600		28.2
Professional qualification or A level	553		25.9
Degree and above	978		45.9
Body mass index, kg/m2	2131	26.7 ± 4.2
Smoking status, %
Never	1370		64.3
Former	640		30.0
Current	121		5.7
Mean arterial blood pressure, mm Hg	2131	100.7 ± 12.1

^aMean (SD) for continuous variables and percentages for categorical variables.