Table 1

Baseline characteristics of all adult patients at studied general practice sites compared with patients undergoing study

VariableAll adult GP patients (n=10 479)Patients undergoing study* (n=504)p Value
Age, n (%) (years)
 18–302100 (20.4)20 (4.0)<0.001
 31–402469 (23.6)45 (8.9)<0.001
 41–501903 (18.2)66 (13.1)0.005
 51–601331 (12.7)94 (18.7)<0.001
 61–701287 (12.3)131 (26.0)<0.001
 71–80781 (7.5)103 (20.4)<0.001
 >80608 (5.8)45 (8.9)0.005
Male gender, n (%)5131 (49.0)352 (69.8)<0.001
Body mass index, n (%)
 25–29.92835 (27.1)201 (39.9)<0.001
 ≥301320 (12.6)160 (31.7)<0.001
 Missing1363 (13.0)17 (3.4)<0.001
Hazardous alcohol use, n (%)658 (6.3)247 (49.0)<0.001
Type 2 diabetes, n (%)390 (3.7)276 (54.8)<0.001
Ischaemic heart disease, n (%)423 (4.0)65 (12.9)<0.001
Hypertension, n (%)1521 (14.5)215 (42.7)<0.001
Hyperlipidaemia, n (%)2117 (20.2)310 (61.5)<0.001
  • *Patients undergoing study refers to all patients having the simple blood biomarker step of stratification. Categorical variables are displayed as n (%) and compared using χ2 test.

  • p Values reaching statistical significance (p≤0.05) are shown in bold.

  • GP, general practitioner.