Table 1.

Main characteristics of participants, by ethnic group

	Men		Women
Baseline characteristic	Caucasian (n = 36,890)	South-Asian (n = 381)	Caucasian (n = 33,597)	South-Asian (n = 499)
Mean Age (years)	45.6 (IQR: 39.0–52.0)	44.2 (IQR: 37.0–50.0)	45.7 (IQR: 39.0–53.0)	43.7 (IQR: 38.0–50.0)
% of first screening episodes curing "prevalence round" 1989–1993	65.3%	53.3%	69.0%	54.6%
Ascertainment completeness (%)
BMI	83.2%	79.4%	80.5%	77.7%
Total Cholesterol	58.8%	52.3%	53.5%	47.2%
Smoking status	83.7%	79.2%	81.0%	76.1%

IQR: Inter-quartile range, BMI: Body Mass Index.