Asian Journal of Sustainability and Social Responsibility

Table 5 Regressions: Pollution Prevention and Pollution Control^a,b

From: Supply chain uncertainty and environmental management

	Pollution Prevention				Pollution Control
	Model 3.1	Model 3.2	Model 3.3	Model 3.4	Model 4.1	Model 4.2	Model 4.3	Model 4.4
Plant size^c	.022	.025	.011	.021	−.020	−.029	−.013	−.024
Company size^c	−.233**	−.055	−.060	−.054	.016	.066	.071	.065
Province^d	.143*	.037	.067	.046	−.036	−.044	−.079	−.054
ISO 14001^e		−.076	−.078	−.089		.091	.092	.106
% capital budget		−.087	−.071	−.082		.103	.084	.097
Management systems		−.541**	−.543**	−.527**		−.346**	−.345**	−.364**
Demand uncertainty			−.148**				.176**
Supply uncertainty				−.142**				.169**
R-square	.075**	.372**	.392**	.173**	.002	.114**	.143**	.142**
F- Statistics	5.678	20.502	19.084	19.032	0.112	4.467	4.942	4.905
∆ R-square		.297**	.021**	.020**		.113**	.029**	.028**

^aStandardized betas reported. Number of observations: 215
^b** = p-value < .01; * = p-value < .05; ^† = p-value < .10
^cThe company and plant size were computed by taking the natural logarithmic transformation of the number of employees
^dThis is a dummy variable where 0 is Ontario and 1 is Quebec
^eThis is a dummy variable where 0 is a plant that is not ISO 14001 certified and 1 is a certified plant

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