Table 4 Test of a U-shaped relationship...

Table 4

Test of a U-shaped relationship between SEWi and EO

Description	Result
Data range	[1.00, 5.00]
Estimated turning point	2.566
95% CI – Fieller method	[1.18, 2.82]
95% CI – Delta method	[2.10, 3.02]
Slope at the lower bound of data range	b = −0.537, p = 0.002
Slope at the upper bound of data range	b = 0.851, p < 0.001
Overall test of U-shape	t = 2.960, p = 0.002

Description	Result
Data range	[1.00, 5.00]
Estimated turning point	2.566
95% CI – Fieller method	[1.18, 2.82]
95% CI – Delta method	[2.10, 3.02]
Slope at the lower bound of data range	b = −0.537, p = 0.002
Slope at the upper bound of data range	b = 0.851, p < 0.001
Overall test of U-shape	t = 2.960, p = 0.002

Source(s): Created by authors

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