CVD No CVD Total Test stat. P-value
Total 101 6155 6256    
Gender       Chisq. (1 df) 0.343
Men 61 (60.4) 3395 (55.2) 3456 (55.2)    
Age at enrolment       t-test¬† (6254 df) < 0.001
Mean(SD) 61.7 (10.2) 54.1 (10.5) 54.2 (10.5)    
Ethnic group       Fisher’s exact
test (3 df)
0.036
Other 62 (61.4) 4348 (70.6) 4410 (70.5)    
Maori 22 (21.8) 826 (13.4) 848 (13.6)    
Pacific 16 (15.8) 773 (12.6) 789 (12.6)    
Indian 1 (1.0) 208 (3.4) 209 (3.3)    
Smoking status       Chisq. (1 df) 0.012
Yes 28 (27.7) 1082 (17.6) 1110 (17.7)    
Statin treatment at baseline?     Chisq. (1 df) 0.127
Yes 20 (19.8) 860 (14.0) 880 (14.1)    
Antihypertensive treatment at baseline?     Chisq. (1 df) < 0.001
Yes 48 (47.5) 1637 (26.6) 1685 (26.9)    
Systolic blood pressure (mmHg)     Ranksum test < 0.001
Median(IQR) 140 (130,150) 130 (120,142) 130 (120,143)    
Diagnosis of diabetes? Chisq. (1 df) 0.0143
Yes 24 (23.8) 896 (14.6) 920 (14.7)    
Total to HDL-cholesterol ratio     Rank sum test 0.744
Median(IQR) 3.7 (3.1, 4.8) 3.8 (3.1, 4.7) ¬†3.8 (3.1, 4.7)    
Premature Family history?       Chisq. (1 df) 0.520
Yes 31 (30.7) 1681 (27.3) 1712 (27.4)    
IQR: Interquartile range. HDL: high density lipoprotein. CVD: cardiovascular disease. Stat: statistic. df: degrees of freedom. Chisq: chi-square test of independence
Table 2: Sample characteristics by cardiovascular disease status: numbers (% of column population unless otherwise stated).