Table 3.
Comparison of type of surgery received among patients with surgery data in both registry and insurance claims stratified by key characteristics
| Claims BCS, Registry BCS | Claims BCS, Registry Mast | Claims Mast, Registry BCS | Claims Mast, Registry Mast | Sensitivity (95% CI)a | PPV (95% CI)a | Specificity (95% CI)a | NPV (95% CI)a | Kappa (95% CI) | |
|---|---|---|---|---|---|---|---|---|---|
| Overall | 13,118 | 561 | 436 | 9,002 | 95.9% (95.3%, 96.6%) | 96.8% (96.5%, 97.1%) | 95.4% (94.9%, 95.8% | 94.1% (93.7%, 94.6%) | 0.91 (0.90, 09.2) |
| Key populations | |||||||||
| Rural | 2,810 | 113 | 93 | 2,097 | 96.1% (95.4%, 96.8%) | 96.8% (96.1%, 97.3%) | 95.8% (94.8%, 96.6%) | 94.9% (93.9%, 95.7%) | 0.92 (0.91, 0.93) |
| Black Patients | 2,031 | 82 | 79 | 1,436 | 96.1% (95.2%, 96.9%) | 96.3% (95.4%, 97.0%) | 94.8% (93.5%, 95.8%) | 94.6% (79.6%, 95.6%) | 0.91 (0.89, 0.92) |
| Insurance typeb | |||||||||
| Commercial | 2,968 | 107 | 107 | 2,217 | 96.5% (95.8%, 97.1%) | 96.5% (95.8%, 97.1%) | 95.4% (94.5%, 96.2%) | 95.4% (107.4%, 96.0%) | 0.92 (0.91, 0.93) |
| Medicaid | 237 | 26 | 28 | 311 | 90.1% (85.8%, 93.4%) | 89.4% (95.6%, 92.4%) | 91.7% (88.3%, 94.4%) | 92.3 (28.3%, 94.5%) | 0.82 (0.77, 0.86) |
| Medicare | 8,966 | 366 | 262 | 5,548 | 96.1% (95.7%, 96.5%) | 97.2% (96.8%, 97.5%) | 95.5% (94.9%, 96.0%) | 93.8% (262.8%, 94.4%) | 0.91 (0.91, 0.92) |
| Year of diagnosis | |||||||||
| 2003–2005 | 713 | 61 | 72 | 685 | 92.1% (90.0%, 93.9%) | 90.8% (88.2%, 92.5%) | 90.5% (88.2%, 92.5%) | 91.8% (72.8%, 93.5%) | 0.87 (0.85, 0.89) |
| 2006–2009 | 2,765 | 156 | 116 | 2,291 | 94.7% (93.8%. 95.5%) | 96.0% (95.2%, 96.6%) | 95.2% (94.2%, 96.0%) | 93.6% (116.6%, 92.7%) | 0.90 (0.89, 0.91) |
| 2010–2013 | 5,117 | 198 | 165 | 3,665 | 96.3% (95.7%, 96.8%) | 96.9% (96.4%, 97.3%) | 95.7% (95.0%, 96.3%) | 94.9% (165.9%, 95.5%) | 0.92 (0.91, 0.93) |
| 2014–2017 | 4,523 | 146 | 112 | 2,361 | 96.9% (96.3%, 97.3%) | 97.6% (97.1%, 98.0%) | 95.5% (94.6%, 96.3%) | 94.2% (112.2%, 95.0%) | 0.92 (0.91, 0.93) |
aSensitivity is defined as the probability of having a BCS identified in the registry given that there is an insurance claim for BCS. Positive Predictive Value (PPV) is defined as the probability of having an insurance claim for BCS given a flag for BCS in the registry. Specificity is defined as the probability of having mastectomy identified in the registry given that there is an insurance claim for mastectomy. Negative Predictive Value (PPV) is defined as the probability of having an insurance claim for mastectomy given a flag for mastectomy in the registry
bMedicare and commercial claims available 2003–2017, Medicaid claims available 2003–2013
PPV Positive predictive value, NPV negative predictive value