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. 2021 May 13;11(5):1396. doi: 10.3390/ani11051396

Table 4.

Variables used in cluster analysis to identify value-creating strategies.

Variables K–W Test Ecological (1) Single-Product (2) Innovative (3) Traditional (4) Dunn’s Test
No. firms 11 9 8 21
Sales of fresh milk (%) *** 15.1 95.4 5.2 1.7 ***: 1–2, 2–3, 2–4
Sales of products with PDO (%) *** 2.8 0.0 5.2 48.0 ***: 2–4/**: 1–4
Sales of organic products (%) *** 99.3 13.2 4.0 3.2 ***: 1–2, 1–3, 1–4
Product innovation *** −0.120 0.621 1.526 −0.559 ***: 2–4, 3–4
Number of references *** 5.00 3.00 11.50 4.00 ***: 2–3, 3–4/**: 1–3

Notes: for the values expressed in percentages the mean is shown and the median for the rest. ***, **, indicate statistical significance at the 1%, and 5% level, respectively.