Function

Estimate

S.E.

P value

Network dynamics

1. Rate: rate friendship

12.2900

(0.4620)

<1e−4

2. Eval: outdegree (density)

−3.4228

(0.0370)

<1e−4

3. Eval: reciprocity

2.3341

(0.0664)

<1e−4

4. Eval: transitive triplets

0.4957

(0.0268)

<1e−4

5. Eval: same sex

0.0580

(0.0451)

0.1984

6. Eval: same grade

0.5417

(0.0501)

<1e−4

7. Eval: BMI similarity

0.3901

(0.1807)

0.0309

Behavior dynamics

8. Rate: rate BMI period 1

4.1708

(0.3577)

<1e−4

9. Eval: BMI linear shape

0.1571

(0.0275)

<1e−4

10. Eval: BMI quadratic shape

0.0144

(0.0066)

0.0291

11. Eval: BMI similarity

13.9074

(3.7561)

0.0002