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Table 4 The number of TP, TN, FM, FP patients by physical examination in 1000 patients

From: Diagnostic accuracy of physical examination for detecting pelvic fractures among blunt trauma patients: a systematic review and meta-analysis

Prevalence 5% 10% 15%
TP 43 (38–48) 86 (76–95) 129 (114–143)
FN 7 (2–12) 14 (5–24) 21 (7–36)
TN 877 (797–939) 831 (755–889) 785 (713–840)
FP 73 (11–153) 69 (11–145) 65 (10–137)
  1. Sensitivity: 0.859 [95% CI 0.761–0.952] at fixed specificity as 0.920
  2. Specificity: 0.923 [95% CI 0.839–0.988] at fixed sensitivity as 0.859
  3. TP true positive, FN false negative, TN true negative, FP false positive
  4. The number of patients and 95%CI of TP, FN, TN, FP among the 1000 trauma patients