Table 3.
Service Delivery Network Evolution: Stochastic Actor Oriented Model Results
| β | SE | |
|---|---|---|
| Referrals | ||
| Exogenous effects | ||
| Revenue (ego) | −0.005 | 0.014 |
| Award (ego) | −0.010 | 0.129 |
| Service similarity | 0.163 | 0.138 |
| Trust | 0.141 | 0.052** |
| Endogenous effects | ||
| Reciprocity | 0.286 | 0.219 |
| Transitive triplets | 0.036 | 0.030 |
| Outdegree-activity | 0.052 | 0.018*** |
| Staff Expertise-multiplexity | 0.214 | 0.673 |
| Staff Expertise Sharing | ||
| Exogenous Effects | ||
| Revenue (ego) | 0.016 | 0.015 |
| Award (ego) | −0.183 | 0.131 |
| Service similarity | 0.264 | 0.100** |
| Trust | 0.076 | 0.053 |
| Endogenous Effects | ||
| Reciprocity | 0.651 | 0.278* |
| Transitive triplets | 0.008 | 0.043 |
| Outdegree-activity | 0.091 | 0.016*** |
| Referrals-multiplexity | 0.912 | 0.410* |
| Other Parameters | ||
| Density (referrals) | −1.402 | 0.205*** |
| Density (staff expertise) | −2.427 | 0.347*** |
| Rate (referrals) | 17.786 | 0.237*** |
| Rate (staff expertise) | 28.698 | 5.800*** |
***
p < .001,
**
p < .01,
*
p < .05