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.
Parameter estimation and testing of PEV and BUEV
| Parameter | Value | Error | t-Statistic | |
|---|---|---|---|---|
| PEV | AR{1} | 0.995535 | 0.00972474 | 102.371 |
| MA{1} | −0.883045 | 0.0328523 | −26.8792 | |
| BUEV | AR{1} | 0.997307 | 0.00903517 | 110.381 |
| MA{1} | −0.931795 | 0.028666 | −32.5053 |
PEV prenatal examination visits, BUEV B-ultrasound examination visitors
