| Four-chamber view | Three-vessel view | Left ventricular outflow tract |

Favourable fetal position (N = 95) | 94 (99.0%) | 49 (51.6%) | 50 (52.6%) |

Unfavourable fetal position (N = 6) | 4 (66.7%) | 0 (0%) | 2 (33.3%) |

Chi-square test p-value | <0.001 | 0.014 | 0.359 |

BMI < 25 kg/m | 88 (97.8%) | 44 (48.9%) | 47 (52.2%) |

BMI ≥25 kg/m | 10 (90.9%) | 5 (45.5%) | 5 (45.5%) |

Chi-square test, p value | 0.205 | 0.830 | 0.672 |