Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Subgroup | Coefficient (95% CI) | t | P value |
|---|---|---|---|
| Testing method | 2.835 (−0.681, 6.352) | 1.97 | 0.096 |
| Ethnicity | −0.225 (−2.909, 2.459) | −0.20 | 0.845 |
| Sample material | −1.521 (−3.347, 0. 305) | −2.04 | 0.088 |
