Cost Effectiveness and Resource Allocation

Table 7 Spearman rank correlation (model internal validity test—total productivity)

From: Total productivity change of Health Centers in Greece in 2016–2018: a Malmquist index data envelopment analysis application for the primary health system of Greece

	tfpch (M0)	tfpch (M1)	tfpch (M2)	tfpch (M3)
tfpch (M0)	1.000	0.896^**	0.951^**	0.766^**
tfpch (M1)	0.896^**	1.000	0.862^**	0.814^**
tfpch (M2)	0.951^**	0.862^**	1.000	0.708^**
tfpch (M3)	0.766^**	0.814^**	0.708^**	1.000

^**Correlation is significant at the 0.01 level (2-tailed). N: 155

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