Table 1 Criteria used to find records for HIV-positive women reported to NSHPC and UK CHIC
Criteria used to find records (All pairs of records have the same DOB) | Records matched (n = 2063) | |||
|---|---|---|---|---|
N | % | Cumulative% | ||
Exact CD4 date | CD4 ± 10 cells/mm3 | 1492 | 72.3 | 72.3 |
HIV diagnosis date/site | 39 | 1.9 | 74.2 | |
CD4 date ±30 days | CD4 ± 10 cells/mm3 | 251 | 12.2 | 86.4 |
HIV diagnosis date/site | 59 | 2.9 | 89.2 | |
ART drug start and stop dates | Exact dates | 64 | 3.1 | 92.3 |
Dates ±7 days | 48 | 2.3 | 94.7 | |
Manual | Site match | 58 | 2.8 | 97.5 |
Diagnosis date ±30 days | 4 | 0.2 | 97.7 | |
Drug start or stop dates | 2 | 0.1 | 97.8 | |
Soundex | 7 | 0.3 | 98.1 | |
ART profile | 39 | 1.9 | 100.0 | |