Table 3

Univariable associations with myocardial ischaemia on N13-ammonia PET

Ischaemia (n=13)No ischaemia (n=14)p Value
Age49 (46, 51)41 (35, 49)0.08
Female sex5 (38%)9 (64%)0.29
Typical angina10 (77%)2 (14%)0.004
Exertional dyspnoea11 (85%)5 (36%)0.03
Hypertension8 (62%)6 (43%)0.72
Hyperlipidaemia6 (46%)8 (57%)0.48
β-blocker use8 (62%)7 (50%)0.99
Estimated METs9.5 (8.4, 10.3)9.8 (7.9, 11.3)0.46
Peak double product26 790 (18 330, 29 000)24 760 (22 060, 28 900)0.49
  • METs, estimated metabolic equivalents; PET, positron emission tomography.