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Table 2 Diagnostic accuracy of physical examination, transvaginal ultrasonography, and both for diagnosing surgical emergencies

From: Routine ultrasound examination by OB/GYN residents increase the accuracy of diagnosis for emergency surgery in gynecology

  Physical examination alone TVUS alone Strategy combining physical examination andTVUS
  Se% (n/N) [95% CI] Sp% (n/N) [95% CI] LR + LR – Se (n/N) [95% CI] Sp (n/N) [95% CI] LR+ LR – Se (n/N) [95% CI] Sp (n/N) [95% CI] LR+ LR –
Overall population 87% (121/139) [82–93] 33% (31/95) [23–42] 1.3 0.4 94% (131/139) [90–98] 27% (26/95) [18–36] 1.3 0.2 99% (138/139) [98–100] 7% (7/95) [2–13] 1.1 0.1
Pregnant women 84% (81/97) [76–91] 42% (22/53) [28–55] 1.4 0.4 96% (93/97) [92–100] 13% (7/53) [4–22] 1.1 0.3 99% (96/97) [97–100] 6% (3/53) [0–12] 1.1 0.2
Non-pregnant women 95% (40/42) [89–100] 21% (9/42) [19–34] 1.2 0.2 91% (38/42) [82–99] 45% (19/42) [30–60] 1.6 0.2 100% (42/42) [92 – 100] 10% (4/42) [1–18] 1.1 0
  1. Se, sensitivity; CI, confidence interval; Sp, specificity; LR, likelihood ratio.
  2. †Corresponds to a strategy of routine TVUS regardless of the clinical findings, abnormal findings include abnormal examination OR abnormal TVUS.
  3. TVUS, transvaginal ultrasonography; Se, sensitivity; Sp, specificity; LR+, positive likelihood ratio; LR-, negative likelihood ratio; 95%CI, 95 % confidence interval.