Table 2

Estimates of the OR for abnormal or borderline ECG by altitude in a multivariate logistic model and associations for confounding variables

Variables and comparisonOR (95% CI)p Value
Altitude (per 1000 m higher)2.83 (1.07 to 7.45)0.03
Systolic blood pressure (per 10 mm Hg higher)1.25 (1.08 to 1.44)0.002
TC-to-HDL ratio (per unit ratio higher)0.93 (0.75 to 1.15)0.49
HbA1c (per mmol/mol higher)1.02 (0.99 to 1.05)0.49
Smoke tobacco (yes compared with no)1.69 (0.97 to 2.94)0.06
Age (per decade older)1.14 (0.91 to 1.43)0.24
Sex (men compared with women)1.69 (0.97 to 2.94)0.06
  • HbA1c, glycated haemoglobin; HDL, high-density lipoprotein-cholesterol; TC, total cholesterol.