Construct/ item

Mean

SD

Cronbach’s alpha

Cluster 1

(Cost)

Cluster 2

(Quality)

Cluster 3

(Availability)

CP: Cost Practices

3.2742

0.904

CP1

3.9348

1.23652

0.845

0.756

0.109

−0.006

CP2

3.4783

1.47180

0.755

0.851

0.067

0.021

CP3

3.5652

1.42442

0.653

0.693

−0.040

0.015

CP4

3.2609

1.65240

0.881

0.647

0.037

0.213

CP5

2.3913

1.55604

0.891

0.648

0.055

0.001

CP6

2.5217

1.36201

0.733

0.883

0.0143

−0.052

CP7

2.5652

1.48552

0.866

0.687

0.026

0.102

CP8

2.4783

1.58800

0.821

0.651

0.132

0.154

CP9

2.6304

1.65138

0.666

0.759

0.003

0.204

CP10

2.9130

1.58921

0.823

0.634

0.249

0.008

CP11

4.2609

1.21901

0.799

0.749

0.079

−0.069

CP12

3.5652

1.51514

0.855

0.845

0.009

0.091

CP13

3.7826

1.47442

0.869

0.768

0.188

0.270

QP: Quality Practices

3.7891

0.888

0.774

QP1

4.1522

1.28179

0.721

−0.009

0.824

−0.015

QP2

3.9348

1.27196

0.801

−0.058

0.835

0.206

QP3

4.0000

1.19257

0.811

0.188

0.852

−0.085

QP4

3.7174

1.40891

0.799

0.237

0.666

0.139

QP5

3.7826

1.34846

0.761

0.091

0.648

0.178

QP6

3.6304

1.40410

0.777

0.014

0.722

0.002

QP7

3.5870

1.42324

0.769

0.009

0.620

−0.023

QP8

3.9783

1.34146

0.859

0.238

0.711

0.273

QP9

3.9348

1.35650

0.719

−0.101

0.839

0.049

QP10

3.1739

1.53918

0.694

−0.002

0.701

0.209

AP: Availability Practices

3.7663

0.866

AP1

3.9565

1.33261

0.728

0.257

0.086

0.861

AP2

3.4348

1.52974

0.729

0.006

0.077

0.798

AP3

3.8913

1.46406

0.806

0.093

−0.098

0.823

AP4

3.7826

1.38103

0.801

−0.087

−0.018

0.715

Eigenvalue

5.822

4.121

2.431

Percentage of variance explained

34.0%

25.5%

19.1%

Cumulative percentage of total variance explained

34.0%

59.5%

78.6%