Table 1 Parameter estimates from ERGMs in each year, with standard errors in brackets. CMP stands for Conway-Maxwell-Poisson distribution; see main text for description of terms

CMP

0.923 (0.013)

0.783 (0.010)

0.914 (0.058)

0.743 (0.012)

0.958 (0.012)

0.600 (0.082)

Non-zero

−7.109 (0.436)

−6.389 (0.192)

−4.287 (0.282)

−6.622 (0.231)

−5.805 (0.476)

−6.377 (0.176)

Transitive ties

1.954 (0.208)

1.373 (0.090)

0.654 (0.136)

1.571 (0.113)

1.508 (0.230)

1.323 (0.077)

Sex

−0.096 (0.024)

0.059 (0.017)

−0.092 (0.109)

−0.019 (0.015)

−0.107 (0.028)

−0.073 (0.042)

Node-match by sex

−0.411 (0.030)

−0.399 (0.036)

−0.685 (0.162)

−0.339 (0.023)

−0.430 (0.035)

−0.020 (0.081)

Emergence location

0.390 (0.036)

0.391 (0.066)

0.269 (0.113)

0.594 (0.0425)

0.143 (0.055)

0.679 (0.199)