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Table 3 The independently predictive value of ARSA or combined ARSA for chromosomal abnormalities

From: Predictive value of aberrant right subclavian artery for fetal chromosome aneuploidy in women of advanced maternal age

Group Index Sensitivity
(95% CI)
Specificity
(95% CI)
Positive predictive value
(95% CI)
Negative predictive value Likelihood ratio
Entirecohort ARSA 11.76% (6.23–19.65) % 99.39% (99.24–99.51) % 12.63% (6.70–21.03) % 99.34% (99.19–99.47) % 19.26
Combined ARSA 10.78% (5.51–18.48) % 99.85% (99.76–99.90) % 34.38% (18.57–53.19) % 99.33% (99.18–99.46) % 69.76
AMA ARSA 13.51% (4.54–28.77) % 99.29% (98.91–99.57) % 20.00% (6.83–40.70) % 98.87% (98.41–99.23) % 19.07
Combined ARSA 10.81% (3.03–25.42) % 99.96% (99.90–99.98) % 40.00% (12.16–73.76) % 99.76% (99.66–99.83) % 246.00
non-AMA ARSA 10.77% (4.44–20.94) % 99.41% (99.25–99.55) % 10.00% (4.12–19.52) % 99.46% (99.30–99.59) % 18.40
Combined ARSA 10.77% (4.44–20.94) % 99.89% (99.82–99.94) % 31.82% (13.86–54.87) % 99.58% (99.45–99.68) % 97.82
  1. ARSA Aberrant right subclavian artery, AMA Advanced maternal age, non-AMA appropriate maternal age, OR Odds ratio, CI Confidence intervals
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