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. 2024 Jun 6;10(12):e32519. doi: 10.1016/j.heliyon.2024.e32519

Table 6.

Mediating Factors and FDI Spillover effect: System GMM Estimation.

Depvar: ltfpijt
Interaction with HS
Interaction with BS
Interaction with FS
Independent variables All firms (i) Domestic firms (ii) Foreign firms (iii) All firms (iv) Domestic firms (v) Foreign firms (vi) All firms (vii) Domestic firms (viii) Foreign firms (ix)
ltfpijt-1 0.621*** 0.689*** 0.771*** 0.759*** 0.818*** 0.682*** 0.595*** 0.691*** 0.680***
(0.102) (0.040) (0.089) (0.074) (0.029) (0.099) (0.108) (0.041) (0.131)
Horizontal FDI (HS) −2.405*** −3.366*** 1.149 0.131 −0.987*** 2.573*** 0.067 −0.993*** 2.567***
(0.754) (0.495) (0.788) (0.259) (0.293) (0.422) (0.252) (0.270) (0.478)
Backward FDI (BS) 2.524*** 2.917*** 3.496** 0.227 1.125 −2.236 2.179*** 2.620*** 3.330**
(0.684) (0.743) (1.562) (1.156) (0.908) (2.663) (0.728) (0.740) (1.671)
Forward FDI (FS) −0.184 0.293 −1.755 −3.828*** −1.994 −2.632 −9.929*** −8.084*** −9.083**
(1.625) (1.347) (3.129) (1.381) (1.445) (2.867) (2.256) (1.525) (4.168)
HHI 0.738 −0.081 −0.583 −0.341 −0.342 −1.269 0.531 0.013 −1.122
(0.819) (0.709) (1.405) (0.726) (0.742) (1.401) (0.732) (0.708) (1.467)
HS*AGE 0.092*** 0.077*** 0.047**
(0.026) (0.012) (0.023)
HS*EXPINT 0.005* 0.011** 0.005
(0.003) (0.005) (0.005)
HS*IMPINT −0.704*** −0.783*** −0.596
(0.162) (0.134) (2.643)
HS*RDINT −8.255* −7.644** −10.605
(4.499) (3.989) (27.050)
HS*ADINT −6.531 −9.945 −4.699
(7.613) (11.431) (5.038)
BS*AGE 0.118*** 0.101*** 0.196***
(0.041) (0.022) (0.077)
BS*EXPINT 0.012* 0.026** 0.017
(0.007) (0.011) (0.022)
BS*IMPINT −9.192 −18.186** 9.820
(9.173) (8.092) (8.289)
BS*RDINT −9.654 −20.958 −40.663
(22.877) (26.333) (29.106)
BS*ADINT 5.610 0.813 35.578
(19.737) (69.811) (31.318)
FS*AGE 0.396*** 0.285*** 0.264*
(0.117) (0.048) (0.153)
FS*EXPINT 0.029 0.068*** 0.009
(0.019) (0.023) (0.015)
FS*IMPINT −2.263*** −2.682*** 14.616
(0.569) (0.425) (15.451)
FS*RDINT −46.251** −38.992* 183.206
(21.436) (21.799) (165.635)
FS*ADINT −29.100 −44.911 11.214
(30.014) (33.578) (27.481)
Constant
Observations 5244 3960 1284 5244 3960 1284 5244 3960 1284
Number of firms 437 330 107 437 330 107 437 330 107
F-statistic 188.87 188.45 105.01 236.55 246.18 58.85 180.25 226.42 67.39
Hansen (p-value) 0.174 0.252 0.221 0.164 0.239 0.18 0.196 0.291 0.546
AR(2) (p-value) 0.064 0.125 0.389 0.304 0.143 0.424 0.069 0.124 0.291

Notes: Robust standard errors are given in the parentheses and *, **, and *** show significance at the 10 per cent, 5 per cent, and 1 per cent levels, respectively. Here HS stands for horizontal spillover, BS for backward spillover and FS for forward spillover effects respectively.

Source: Authors' calculation.