Table 3 Weighted absolute mean difference between dates on the case report and the medical record
From: Assessing the validity of tuberculosis surveillance data in California
Dates | Weighted Absolute Mean Difference (days) | Coefficient of Variation (C.V.) % |
|---|---|---|
Month/day/year dates | ||
Birth date | 48.4 | 39.9 |
Treatment start | 2.6 | 17.0 |
Isolate collection for drug susceptibility testing | 13.0 | 26.1 |
First positive culture | 6.1 | 31.0 |
First consistently negative culture | 25.0 | 15.1 |
Treatment stop | 19.2 | 11.3 |
Isolate collection for final susceptibility testing | 110.9* | 44.5 |
Dates | Weighted Absolute Mean Difference (months) | Coefficient of Variation (C.V.) % |
Month/year dates | ||
Case reported to local health department | 0.74 | 10.0 |
Entry into U.S. | 11.5 | 20.2 |