Table 2 Latency until first outbound call to a nonfamily plan member.

Dependent variable = hours until first outbound call to nonfamily plan member	Coef.	SD	Lower 2.5% CI	Upper 97.5% CI	N_eff	Rhat
(1) Ego and family all unembedded	−26.562	4.834	−36.139	−17.217	15987	1.000
(2) Ego and family all embedded	55.705	4.758	46.359	64.924	16055	1.000
Earthquake intensity group (1 = severe)	−16.582	4.723	−25.860	−7.295	16590	1.000
(1) X Earthquake intensity group	−14.358	5.015	−24.258	−4.506	16895	1.000
(2) X Earthquake intensity group	13.890	4.666	4.679	22.994	16106	1.000
ln(Degree centrality of ego)	−56.805	4.351	−65.345	−48.366	13819	1.000
ln(Total call frequency of ego)	−34.806	3.720	−41.939	−27.701	12139	1.000
ln(Total text frequency of ego)	−20.910	3.213	−27.242	−14.715	15452	1.000
ln(Internet usage frequency of ego)	2.933	2.976	−2.916	8.682	12377	1.000
ln(Phone retail price in Yuan)	−4.618	2.901	−10.125	0.999	11380	1.000
ln(Total WeChat frequency)	−3.423	3.501	−10.289	3.325	14675	1.000
ln(Total frequency of other instant messaging)	−11.889	3.138	−18.166	−5.767	12061	1.000
Roaming dummy (1 = traveling outside of prefecture)	19.607	4.818	10.413	28.968	17453	1.000
Rural dummy (1 = rural)	14.648	4.702	5.469	23.678	16445	1.000
Damage dummy (1 = cell towers damaged in neighborhood)	−1.800	4.928	−11.441	7.914	15578	1.000
Prior intra-family outbound call share	24.572	4.892	14.878	34.197	15516	1.000
(Intercept)	1.141	4.952	−8.533	10.740	16486	1.000

Notes: number of obs. = 18,958; model controls for random effects of families; Bayesian estimations produce credible intervals (CI), which are the intervals within which the parameter values fall at some particular probability.
Model 2 tests if higher earthquake intensity affects the relationship between family embeddedness structure and how long it took egos to contact a nonfamily plan member (i.e., “friend”). A negative interaction term with (1) showed that at higher earthquake intensity, completely unembedded family structures were significantly faster in calling friends; a positive interaction term with (2) shows that at higher earthquake intensity levels, fully embedded family structures were significantly slower in calling friends. In other words, at higher earthquake intensity, people in completely unembedded families exhibited greater relative urgency in reaching out to friends, while people in fully embedded families were relatively less urgent.

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