142 Chapter 6 All analyses were stratified by region and performed with R Studio (version 4.0) (14). Statistical significance was considered at a two-sided p<0.05. RESULTS Study population A total of 13,884 CHD patients were included in the survey, of about half were registered in a HIC center (N=7462). 25.0% were female, mean age was 64.8 (sd 11.2) years. Most participants were considered ethnically white (60.9%) and Asian (31.8%). With respect to educational level, 47.0% had completed tertiary education, 34.5% secondary school, and 18.6% primary school (Table 2). Mean systolic blood pressure was 132 (sd 19.0) mmHg, mean diastolic blood pressure 77.9 (sd 11.1) mmHg, BMI 28.0 (sd 4.9) kg/m2, and LDL cholesterol 2.24 (sd 1.1) mmol/L). Supplementary Tables 1 and 2 show patient characteristics, risk factor history and measurements, fasting blood lipid and glucose levels, recording of risk factors, target attainment and treatment by HICs, UMICs and LMICs- and by educational level. For 34.1% of the patients, data from pre-existing registries was used to complete the survey. (LMIC N=2645) UMIC (N=3777) HIC (N=7462) (Total N=13884) Number of countries 3 9 17 29 Number of centres 11 29 65 105 Type of centre attended Private 1526 (57.7) 940 (24.9) 313 (4.55) 2779 (20.9) Public 1119 (42.3) 2837 (75.1) 6561 (95.4) 10517 (79.1) Demographics Mean age (SD) 62.1 (39.9) 63.0 (10.5) 66.7 (11.0) 64.8 (20.0) Sex Female 502 (19.0) 1140 (30.2) 1823 (24.4) 3465 (25.0) Ethnic Group Arab 346 (13.1) 102 (2.70) 123 (4.37) 571 (6.19) Asian 2284 (86.4) 628 (16.6) 26 (0.924) 2938 (31.8) Black 6 (0.227) 18 (0.477) 14 (0.498) 38 (0.412) Mixed 5 (0.189) 41 (1.09) 9 (0.320) 55 (0.596) Other 0 (0) 3 (0.0795) 8 (0.284) 11 (0.119) White 4 (0.151) 2981 (79.0) 2634 (93.6) 5619 (60.9) Educational level Primary school 630 (24.8) 506 (16.8) 921 (16.7) 2057 (18.6) Secondary school 964 (37.9) 1403 (46.6) 1451 (26.3) 3818 (34.5) Tertiary /University 950 (37.3) 1100 (36.6) 3150 (57.0) 5200 (47.0) Cardiovascular history Index event CABG 423 (16.0) 690 (18.3) 797 (15.7) 1910 (16.6) PCI 1253 (47.4) 2197 (58.2) 2875 (56.6) 6325 (55.0) Acute coronary syndrome 1034 (39.1) 1462 (38.7) 4128 (55.3) 6624 (47.7) Stable angina pectoris 855 (32.3) 1539 (40.7) 2146 (28.8) 4540 (32.7) Family history premature CVD 288 (10.9) 1184 (31.4) 819 (29.0) 2291 (24.8) Table 2: Characteristics of the study population by country income group.
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