Table 1

Characteristics of participants and non-participants

ParticipantsNon-participantsP value
N=229N=212
Age (years)57
(56 to 58)
52
(50 to 53)
0.001
Male98 (43)89 (42)0.86
Diabetes mellitus22 (10)10 (5)0.048
Hypertension91 (40)70 (33)0.14
Hypercholesterolaemia97 (42)67 (32)0.02
Family history124 (54)93 (44)0.03
Smoking58 (25)57 (27)0.71
  • Values are n (%) or mean (95% CI).