Table 7 Negative binomial mixed-effects... | Emerald Publishing

Table 7

Negative binomial mixed-effects models predicting inaccuracy in human–robot collaborative order picking

	Dependent variable: Inaccuracy (total errors per 20 min)
	Scenarios model (M3a)		Behavioral model (M3b)		Interaction model (M3c)
Independent variable	Estimate	Std. error	Estimate	Std. error	Estimate	Std. error
Constant	4.088	1.714	4.206	1.901	5.161	2.112
Base performance: Medium	−0.386	0.331	−0.403	0.352	−0.414	0.353
Base performance: High	0.316	0.362	0.303	0.372	0.283	0.373
Order picking experience	−0.050	0.036	−0.050	0.036	−0.053	0.036
Order set #2	0.210	0.311	0.210	0.311	0.182	0.314
Order set #3	0.540	0.300	0.537	0.301	0.549	0.301
Scenario sequence	−0.289	0.249	−0.288	0.249	−0.287	0.249
Correct total order lines picked in 20 min	−0.075	0.029	−0.074	0.029	−0.071	0.029
Scenario: Human leading	0.662	0.263	0.657	0.264	−1.341	1.960
Prevention focus			−0.038	0.268	−0.305	0.374
(Scenario: Human leading) * (Prevention focus)					0.472	0.459
Log-likelihood	−131.09		−131.08		−130.55
Number of subjects	60		60		60
Number of rounds	120		120		120

	Dependent variable: Inaccuracy (total errors per 20 min)
	Scenarios model (M3a)		Behavioral model (M3b)		Interaction model (M3c)
Independent variable	Estimate	Std. error	Estimate	Std. error	Estimate	Std. error
Constant	4.088	1.714	4.206	1.901	5.161	2.112
Base performance: Medium	−0.386	0.331	−0.403	0.352	−0.414	0.353
Base performance: High	0.316	0.362	0.303	0.372	0.283	0.373
Order picking experience	−0.050	0.036	−0.050	0.036	−0.053	0.036
Order set #2	0.210	0.311	0.210	0.311	0.182	0.314
Order set #3	0.540	0.300	0.537	0.301	0.549	0.301
Scenario sequence	−0.289	0.249	−0.288	0.249	−0.287	0.249
Correct total order lines picked in 20 min	−0.075	0.029	−0.074	0.029	−0.071	0.029
Scenario: Human leading	0.662	0.263	0.657	0.264	−1.341	1.960
Prevention focus			−0.038	0.268	−0.305	0.374
(Scenario: Human leading) * (Prevention focus)					0.472	0.459
Log-likelihood	−131.09		−131.08		−130.55
Number of subjects	60		60		60
Number of rounds	120		120		120

Note(s): Italic type = significant at p < 0.05