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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: J Am Coll Surg. 2014 Apr 18;219(3):407–415. doi: 10.1016/j.jamcollsurg.2014.01.064

Table 3.

Sensitivity, Specificity, and Predictive Accuracy of Audit Methods by Severity of NSQIP Complications

Method Sensitivity Specificity Positive predictive value Negative predictive value
Grade 1
 Discharge summary 11/16 (68.8%) 67/68 (98.5%) 11/12 (91.7%) 62/72 (86.1%)
 Retrospective chart review 11/16 (68.8%) 62/68 (91.2%) 11/17 (64.7%) 62/67 (92.5%)
 Prospective 11/16 (68.8%) 61/68 (89.7%) 11/18 (61.1%) 61/66 (92.4%)
Grade 2
 Discharge summary 13/25 (52.0%) 50/59 (84.7%) 13/22 (59.1%) 50/62 (80.6%)
 Retrospective chart review 18/25 (72.0%) 48/59 (81.4%) 18/29 (62.1%) 48/55 (87.2%)
 Prospective 19/25 (76.0%) 49/59 (83.1%) 19/29 (65.5%) 49/55 (89.1%)
Grade 3 to 5
 Discharge summary 12/12 (100%) 72/72 (100%) 12/12 (100%) 72/72 (100%)
 Retrospective chart review 12/12 (100%) 71/72 (98.6%) 12/13 (92.3%) 71/71 (100%)
 Prospective 12/12 (100%) 71/72 (98.6%) 12/13 (92.3%) 71/71 (100%)