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Table 8 Robustness tests using unmatched samples

From: Platform heterogeneity, platform governance and complementors’ product performance: an empirical study of the mobile application industry

Variable Model 7 Model 8
Full samples Multi-homing samples
store − 6.9284c
(0.9958)
− 5.9248b
(1.8819)
in-app 2.2083 c
(0.5961)
2.8909c
(0.9802)
HHI −0.0200 c
(0.0033)
−0.0129b
(0.0054)
in-app × store 1.6115 b
(0.6979)
2.2888a
(1.2729)
HHI × store 0.0120 c
(0.0044)
0.0135
(0.0093)
apps 0.1502
(0.1126)
0.0390
(0.3582)
type 0.8235b
(0.3928)
0.5985
(0.4331)
downloads 0.3250c
(0.0645)
0.3193c
(0.1110)
size 0.3058a
(0.1570)
0.1710
(0.4201)
languages 0.1700
(0.2051)
−0.0239
(0.3193)
updates − 0.5951c
(0.1522)
−0.4850b
(0.2269)
constant 4.2433c
(1.0890)
3.4701b
(1.4950)
N 2356 477
  1. Notes. The values in brackets indicate the standard error of the estimated coefficient. a, b, c indicate statistical significance at the 10%, 5% and 1% levels, respectively