(1) (2) (3) (4) (5)
VARIABLES Value-added Value-added with competition Value-added with competition, interactions Value-added with institution Value-added with institution interactions
Number of political contacts, ln 0.288** 0.281** 0.243** 0.291** 0.244**
(0.113) (0.112) (0.113) (0.114) (0.105)
Number of political contacts (ln) * Moderate competition from other non-state informal enterprises (Yes=1) -0.386** (0.162)
Capital, ln 0.0549** 0.0578** 0.0653*** 0.0552** 0.0632***
(0.0249) (0.0246) (0.0238) (0.0248) (0.0241)
Labor, ln 0.399*** 0.398*** 0.422*** 0.397*** 0.398***
(0.0363) (0.0362) (0.0353) (0.0372) (0.0356)
Age of firm (years of operation), ln 0.133 (0.227) 0.134 (0.225) 0.0779 (0.213) 0.106 (0.225) 0.192 (0.232)
Age of firm (years of operation), ln, squared -0.120 (0.0798) -0.118 (0.0788) -0.105 (0.0751) -0.112 (0.0788) -0.124 (0.0799)
Year 2013 (Yes=1) 0.106** 0.100** 0.141*** 0.110** 0.110***
(0.0444) (0.0443) (0.0427) (0.0474) (0.0424)
Year 2015 (Yes=1) 0.322*** 0.313*** 0.329*** 0.303*** 0.297***
(0.0719) (0.0715) (0.0698) (0.0729) (0.0714)
Moderate competition from other non-state informal enterprises (Yes=1) -0.0727** (0.0369) 0.287** (0.142) -0.0707* (0.0369) -0.0793** (0.0372)
Relatively low PCI: PCI from 54 to less than 56 -0.338** (0.149) 0.232 (0.210)
Medium PCI (medium-institution group): PCI from 56 to less than 57 -0.200 (0.123)
Rather-good PCI (good-institution group): PCI from 57 to less than 60 -0.0543 (0.127)
Good PCI: PCI from 60 to less than 62 -0.143 (0.151)
Number of political contacts (ln) * Relatively low PCI (PCI from 54 to less than 56) -0.373* (0.224)
Observations 1,500 1,500 1,500 1,500 1,500
R-squared 0.090 0.102 0.173 0.099 0.151
Number of firms 500 500 500 500 500
Hansen J statistic 12.09 12.17 26.24 11.43 27.11
p-value of Hansen statistic 0.795 0.790 0.710 0.833 0.617
F statistic 29.56 26.56 24.83 18.01 21.84
LM test statistic for under-identification (Anderson or Kleibergen-Paap) 27.52 27.74 43.71 28.01 34.30
p-value of under-identification LM statistic 0.0697 0.0662 0.0812 0.0619 0.312
F statistic for weak identification (Cragg-Donald or Kleibergen-Paap) 2.008 2.023 1.657 1.870 1.464
LM statistic for instrument redundancy 18.22 18.48 66.93 19.46 55.34
p-value of LM statistic for instrument redundancy 0.251 0.238 0.312 0.245 0.646
centered R-squared 0.0896 0.102 0.173 0.0992 0.151