Table 3.
Weighted performance measurements for postpartum migraine headache based on data sources before and after implementation of the International Classification of Diseases, 10th revision, Clinical Modification codes in the Kaiser Permanente Southern California system in 2015 (n=200).
| Weighted performance measurements (%) |
Overall | 2012-2014 | 2017-2019 | ||||||||
|
|
ICD-CM-9/10a Dxb | Rxc | ICD-CM-9/10 Dx or Rx | ICD-CM-9/10 Dx | Rx | ICD-CM-9/10 Dx or Rx | ICD-CM-9/10 Dx | Rx | ICD-CM-9/10 Dx or Rx | ||
| Sensitivity (95% CI) | 82.7 (77.7-87.8) | 57.5 (48.5-66.5) | 100 (100-100) | 83.4 (76.5-90.3) | 55.4 (42.7-68) | 100 (100-100) | 82 (74.6-89.5) | 59.8 (46.7-72.9) | 100 (100-100) | ||
| Specificity (95% CI) | 99.8 (99.6-100) | 100 (99.9-100) | 99.7 (99.5-99.9) | 99.9 (99.8-100) | 100 (99.9-100) | 99.9 (99.7-100) | 99.6 (99.2-100) | 100 (99.9-100) | 99.6 (99.2-100) | ||
| PPVd (95% CI) | 93.5 (88.3-98.6) | 98.8 (97-100) | 93.9 (89.5-98.2) | 97.8 (93.5-100) | 98.8 (96.3-100) | 97.5 (93.7-100) | 89.1 (79.8-98.3) | 98.8 (96.3-100) |
90.3 (82.5-98.1) | ||
| NPVe (95% CI) | 99.3 (99-99.6) | 98.3 (97.6,99) | 100 (100-100) | 99.3 (98.9-99.7) | 98.1 (97-99.2) | 100 (100-100) | 99.3 (98.9-99.7) | 98.4 (97.5-99.4) | 100 (100-100) | ||
| F-scoref | 87.8 | 72.7 | 96.9 | 90 | 71 | 98.7 | 85.4 | 74.5 | 94.9 | ||
| Youden J statisticf |
82.5 | 57.5 | 99.7 | 83.3 | 55.4 | 99.9 | 81.6 | 59.8 | 99.6 | ||
aICD-CM-9/10: International Classification of Diseases, Clinical Modification, 9th/10th revision.
bDx: diagnosis codes.
cRx: pharmacy records.
dPPV: positive predictive value.
eNPV: negative predictive value.
fF-score and Youden J statistic are statistics that capture the overall performance of a dichotomous diagnostic test.