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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 5.

Comparison of Non-NSQIP Methods for Non-NSQIP Complications

Method All positive* False positive* All negative* False negative* False-positive rate False-negative rate Kappa value Mean kappa
All grade 1 NSQIP complications
 DC Summary 11 + 2 + 1- 63 - 3 - 4 - 2/66 (3.0%) 7/18 (3.9%) 0.646 0.717
 Chart Review 11 + 2 + 1 + 63 - 3 - 4 + 3/66 (4.5%) 3/18 (16.7%) 0.788
 Prospective 11 + 2 - 1- 63 - 3 + 4 + NA NA NA NA
All grade 2 NSQIP complications
 DC Summary 11 + NA 72 - 1- 0/72 (0%) 1/12 (8.3%) 0.950 0.975
 Chart Review 11 + NA 72 - 1+ 0/72 (0%) 0/12 (0%) 1.000
 Prospective 11 + NA 72 - 1+ NA NA NA NA
All grade 3 to 5 NSQIP complications
 DC Summary 1+ NA 83 - NA 0/83 (0%) 0/1 (0%) 1 1
 Chart Review 1+ NA 83 - NA 0/83 (0%) 0/1 (0%) 1
 Prospective 1+ NA 83 - NA NA NA NA NA
*

Numbers indicate the number of patients with the particular pattern in those categories.