Table 4 Purchasing manager sample: OLS... | Emerald Publishing

Table 4

Purchasing manager sample: OLS Regressions of choice with heteroskedastic standard errors

Variables	Model 1		Model 2
Variables	β coefficients (std. errors)	95% CI	β coefficients (std. errors)	95% CI
Intercept	0.871**** (0.01)	[0.84, 0.89]	2.134 (3.89)	[−5.37, 9.63]
RPA	0.025 (0.02)	[−0.03, 0.08]	0.019 (0.02)	[−0.04, 0.07]
SIS	0.016 (0.02)	[−0.04, 0.07]	0.016 (0.02)	[−0.04, 0.07]
Gender	0.050 (0.02) *p = 0.065	[0.00, 0.10]	0.058 (0.02) **p = 0.040	[0.03, 0.12]
RPA* SIS	0.039 (0.05)	[−0.07, 0.15]	0.058 (0.05)	[−0.05, 0.17]
RPA * Gender	−0.105 (0.05) *p = 0.052	[−0.21, −0.00]	−0.111 (0.05) **p = 0.044	[−0.22, −0.00]
SIS * Gender	0.046 (0.05)	[−0.06, 0.15]	0.048 (0.05)	[−0.06, 0.16]
RPA * SIS * Gender	−0.133 (0.10)	[−0.35, 0.08]	−0.128 (0.11)	[-0.35, 0.10]
Organization type (other)			0.154 (0.05) ****p = 0.002	[0.056, 0.25]
Other controls (date of data collection, years of purchasing experience, age, level of management, DOSPERT, time to complete the experiment)			included not significant (n.s.)
Sample size	612		612
R-squared	0.0183		0.0392
F-statistic	1.609		1.272

Variables	Model 1		Model 2
Variables	β coefficients (std. errors)	95% CI	β coefficients (std. errors)	95% CI
Intercept	0.871**** (0.01)	[0.84, 0.89]	2.134 (3.89)	[−5.37, 9.63]
RPA	0.025 (0.02)	[−0.03, 0.08]	0.019 (0.02)	[−0.04, 0.07]
SIS	0.016 (0.02)	[−0.04, 0.07]	0.016 (0.02)	[−0.04, 0.07]
Gender	0.050 (0.02) *p = 0.065	[0.00, 0.10]	0.058 (0.02) **p = 0.040	[0.03, 0.12]
RPA* SIS	0.039 (0.05)	[−0.07, 0.15]	0.058 (0.05)	[−0.05, 0.17]
RPA * Gender	−0.105 (0.05) *p = 0.052	[−0.21, −0.00]	−0.111 (0.05) **p = 0.044	[−0.22, −0.00]
SIS * Gender	0.046 (0.05)	[−0.06, 0.15]	0.048 (0.05)	[−0.06, 0.16]
RPA * SIS * Gender	−0.133 (0.10)	[−0.35, 0.08]	−0.128 (0.11)	[-0.35, 0.10]
Organization type (other)			0.154 (0.05) ****p = 0.002	[0.056, 0.25]
Other controls (date of data collection, years of purchasing experience, age, level of management, DOSPERT, time to complete the experiment)			includednot significant (n.s.)
Sample size	612		612
R-squared	0.0183		0.0392
F-statistic	1.609		1.272

Note(s): *p-value <0.10.; **p-value <0.05.; ***p-value <0.01; ****p-value <0.001

Source(s): Authors’ own work