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.
Changes to Preexisting Ties
| Co-Participation | |
|---|---|
| Past Tie (PT) | 4.73*** (0.07) |
| All Group Co-Part | 1.65*** (0.06) |
| All Group Co-Part2 | −0.20*** (0.01) |
| All Group Co-Part * PT | −0.88*** (0.05) |
| AIC | −125,240.50 |
| BIC | −125,143.80 |
p < 0.01.
Note: Each model shown in Table 3 also contains control variables (first seven rows) shown in Table 1.
