1 Repeat Positive: eligible study individuals who had additional confirmatory Western blots (WB) tests obtained ≥90 days after initial diagnosis. Each positive WB obtained after ≥90
days was considered a separate result. No Repeat Positive: eligible study individuals who had confirmatory Western blot tests all obtained <90 days after initial diagnosis. All
considered a single test for analysis purposes.
2 Adjusted associations are only reported for the final model. Gender, place of residence, and vital status were not significant in adjusted models and not included in the final model.
3 RR indicates relative risk of having a repeat positive Western blot > 90 days after the initial diagnosis. CI indicates confidence interval.
4 Race/Ethnicity: Other includes Asian, Native Hawaiian/Pacific Islander, legacy Asian/Pacific Islander, American Indian/Alaska Native, and multiracial individuals.
5 Residence is missing for 1,959 observations.
6 Risk Category: Other modes of exposure, including an adult receiving clotting factor, transfusion, or transplant, were excluded from the analysis due to small numbers (n=26). IDU:
intravenous drug use; NIR/NRR: no identified risk/no risk factor reported.
7 Disease Stage: Intermediate Diagnosis was defined as the development of AIDS >1 year after the first positive HIV test; Late Diagnosis was defined as the development of AIDS <1
year after the first positive HIV test; and Early Diagnosis was defined as no AIDS diagnosis over the study period.
8 Source of report (facility type that ordered the testing) of initial HIV diagnosis: CHD = County health department; Group/MD = Group practice/private physician; State facility
includes Dept. of Mental Health and state prisons; Other includes blood banks, for insurance purposes, etc.