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Table 2 Innovation and labour productivity

From: Labour productivity among small- and medium-scale enterprises in Uganda: the role of innovation

Variables Model 1
OLS
Model 2
25th percentile
Model 3
50th percentile
Model 4
75th percentile
Innov
 Innovation 1 0.181
(0.445)
0.026
(0.917)
0.181
(0.445)
− 0.345
(0.163)
 Innovation_2 − 0.258
(0.292)
0.190
(0.456)
− 0.258
(0.292)
− 0.711***
(0.006)
 Innovation_3 0.217
(0.309)
0.405*
(0.069)
0.217
(0.309)
− 0.482**
(0.030)
 Innovation_4 0.641***
(0.001)
0.968***
(0.000)
0.641***
(0.001)
− 0.040
(0.845)
Firm age 0.056**
(0.011)
− 0.004
(0.854)
0.056**
(0.011)
− 0.020
(0.375)
Firm age squared − 0.880**
(0.029)
0.201
(0.631)
− 0.880**
(0.030)
1.111***
(0.007)
Manager’s years’ experience 0.007
(0.506)
0.049***
(0.000)
0.007
(0.506)
0.005
(0.633)
Certification (1 = yes) 0.077
(0.710)
− 0.424*
(0.050)
0.077
(0.710)
− 0.502**
(0.021)
Exporter (1 = yes) 0.703**
(0.019)
1.460***
(0.000)
0.703**
(0.019)
1.301***
(0.000)
Use ICT (1 = yes) 1.534***
(0.000)
1.315***
(0.000)
1.534***
(0.000)
1.496***
(0.000)
Gender (1 = yes) 0.150
(0.364)
− 0.208
(0.228)
0.150
(0.364)
0.033
(0.849)
Tax rate burden (1 = yes) − 0.553***
(0.000)
− 0.619***
(0.000)
− 0.553***
(0.000)
− 0.762***
(0.000)
Transport burden (1 = yes) − 0.202
(0.172)
− 0.217
(0.159)
− 0.202
(0.172)
0.619***
(0.000)
Land access (1 = yes) − 0.084
(0.566)
− 0.022
(0.885)
− 0.084
(0.566)
− 0.096
(0.533)
Corruption (1 = yes) 0.102
(0.513)
− 0.083
(0.606)
0.102
(0.513)
− 0.621***
(0.000)
Labour education (1 = yes) − 0.283*
(0.075)
− 0.073
(0.659)
− 0.283*
(0.075)
− 0.493***
(0.003)
Electricity burden (1 = yes) − 0.0641
(0.649)
0.033
(0.822)
− 0.064
(0.649)
− 0.023
(0.874)
Credit access (1 = yes) 0.320**
(0.041)
− 0.169
(0.302)
0.320**
(0.042)
0.467***
(0.005)
Sectoral fixed effects Yes Yes Yes Yes
Regional fixed effects Yes Yes Yes Yes
Constant 15.350***
(0.000)
15.340***
(0.000)
15.350***
(0.000)
17.940***
(0.000)
Observations 347 347 347 347
R 2 0.138 0.118 0.138 0.161
  1. p value in parentheses ***p < 0.01, **p < 0.05, *p < 0.1