Symptomatic women n=1684 | Asymptomatic women n=102 | P value* | |

Coronary microvascular function, continuous variable, median (IQR) | |||

CFVR | 2.33 (2.00–2.75) | 2.60 (2.19–2.95) | 0.007 |

CFV at rest, m/s | 0.23 (0.19–0.29) | 0.21 (0.19–0.25) | <0.001 |

CFV at hyperaemia m/s | 0.56 (0.46–0.68) | 0.54 (0.48–0.62) | 0.086 |

Coronary microvascular function category, n (%) | |||

CFVR≤2.0 | 425 (25.2) | 19 (18.6) | 0.009 |

CFVR>2 and≤2.5 | 593 (35.2) | 27 (26.5) | |

CFVR>2.5 | 666 (39.6) | 56 (54.9) | |

Systolic heart function, mean (SD) | |||

LVEF at rest, % | 58.3 (5.9) | 55.6 (4.7) | <0.001 |

LVEF at hyperaemia, % | 62.1 (6.3) | 59.6 (4.9) | 0.001 |

*P value from age-adjusted linear regression analysis with logarithmically transformed CFVR/CFV. χ

^{2}test is performed when CFVR is grouped into three categoriesCFV(R), coronary flow velocity (reserve); LVEF, left ventricular ejection fraction.