Table 5.

Descriptive analysis

TPM	Median	IQR
We dedicate regular inspections to keeping the machines in operation	4.23*	1.48
We have a daily maintenance sound system to prevent machine failures	4.09*	1.71
Operators are trained to keep the machines in operation	4.11*	1.67
We highlight the excellent maintenance system as a strategy to achieve quality compliance	4.13*	1.58
QS
Some working groups seek to make model changes more efficient and reduce preparation times	4.32*	1.37
Machines and tools facilitate rapid changeovers	4.29*	1.47
The procedure for model changes is standardized	4.29*	1.48
OEE
Is the production department highly productive?	4.25*	1.44
Is the production target met on time, and does it always meet the required quality?	4.17*	1.44
No significant stops in the production process?	4.16*	1.56
No waste in the production process?	4.08*	1.66
OPF
Is a production batch only produced if you have the customer's purchase order?	4.34*	1.38
Is only the specific quantity requested by the customer produced?	4.29*	1.42
Is production at a particular job based on the demand for its subsequent job?	4.28*	1.35
Are workstations making good use of the pull system?	4.27*	1.53
Is the Kanban system used to authorize production?	4.21*	1.51
ESU
Reduction of production costs	4.39*	1.30
Reduction of administrative penalties for environmental mishaps	4.35*	1.35
Reduction of energy costs	4.32*	1.35
Reduction of waste treatment costs	4.32*	1.38
Reducing the costs of rejects and reworks	4.24*	1.44

*The median has been calculated using group midpoints