Table 2.
Comparison of true polycystic ovary syndrome (PCOS) on chart review in women with PCOS determined using ICD-9 codes or using an algorithm incorporating natural language processing and codified data
| Method | ICD-9 Code | PCOS Algorithm-definite | PCOS algorithm-probable | P value* |
|---|---|---|---|---|
| Number of Charts | 200 | 150 | 41 | |
| Chart Reviewed Definite PCOS (%) | 132 (66) | 98 (65) | 25 (61) | 0.2* |
| Chart Reviewed Probable PCOS (%) | 29 (14.5) | 33 (22) | 7 (17) | 0.2 |
| Not PCOS (%) | 17 (8.5) | 10 (7) | 8 (20) | 0.9 |
| Unable to Determine (%) | 22 (11) | 9 (6) | 1 (2) | 0.04 |
For the algorithm PCOS diagnoses, Definite or Probable were defined by probability cutoff levels. Chart reviewed definite PCOS had at least two confirmatory diagnostic criteria to support the diagnosis and probable had at least one confirmatory criterion
*The p value for the algorithm was calculated using both the definite and probable categories