Table 4

Robustness checks

DVΔ in-degree centralityΔ out-degree centralityΔ ego network density
Year201120132011201320112013
Model 7Model 8Model 9Model 10Model 11Model 12
Earthquake−3.303** (1.256)−8.734*** (2.203)−2.719** (0.904)−4.182** (1.436)−0.983* (0.400)−0.155 (0.389)
In-degree centrality1.105*** (0.096)0.586** (0.188)0.156* (0.073)0.042 (0.104)−0.022 (0.016)−0.013 (0.015)
Out-degree centrality−0.050 (0.099)−0.583* (0.234)−0.274** (0.089)−0.209 (0.145)0.046 (0.028)0.006 (0.023)
Ego network density0.071 (0.197)0.126 (0.347)0.201 (0.158)0.262 (0.291)−0.682** (0.213)−0.428* (0.193)
Log assets4.389* (1.793)2.474 (2.370)−0.336 (0.969)3.671* (1.753)0.601 (0.643)−0.087 (0.424)
Log employees−0.350 (0.905)2.154 (1.459)0.383 (0.629)−0.078 (0.964)0.791* (0.312)0.491 (0.298)
Log inventory−0.373 (1.138)1.047 (1.505)0.308 (0.789)1.059 (1.526)−1.510 (0.725)−0.497 (0.261)
Return-on-assets0.091 (0.130)0.268 (0.275)−0.299* (0.122)−0.529 (0.227)−0.004 (0.051)−0.019 (0.047)
COGS-to-sales−3.071 (3.510)6.673 (6.159)−16.431*** (3.080)−15.637** (4.526)3.766* (1.831)3.298* (1.297)
Cash-to-assets5.322 (7.048)−1.220 (10.208)2.491 (5.081)0.083 (0.718)−2.119 (1.543)0.970 (02.187)
Leverage1.822 (1.400)1.664 (1.516)2.077* (1.029)−0.349 (0.240)−0.133 (0.136)−0.322* (0.131)
Sector dummyIncludedIncludedIncludedIncludedIncludedIncluded
Constant−80.790** (25.629)−88.106* (39.513)−7.049 (17.353)−50.924 (29.400)1.319 (6.049)6.780 (6.322)
R-squared0.9200.6100.4440.2110.4590.255
Observations152152152152152152

Note(s): Robust standard errors in parenthesis. p < 0.1, *p < 0.05, **p < 0.01, ***p < 0.001

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