Table 4.

Post hocs multiple comparisons) (Bonferroni test) for measured electrolytes, urea and creatinine at different period of time (N = 238).

Dependent Variable			Mean Difference	Std. Error	Sig.	95% Confidence Interval
						Lower Bound	Upper Bound
Chloride	Period 1	Period 2	−1.319	0.558	0.058	−2.670	0.032
		Period 3	−1.299∗	0.529	0.046	−2.582	−0.016
	Period 2	Period 3	0.20	0.409	1.000	−0.971	1.011
Potassium	Period 1	Period 2	0.015	0.054	1.000	−0.116	0.147
		Period 3	−0.085	0.044	0.161	−0.191	0.021
	Period 2	Period 3	−0.101	0.047	0.098	−0.213	0.012
Sodium	Period 1	Period 2	−3.471∗∗∗	0.366	0.0001	−4.358	−2.584
		Period 3	−3.971∗∗∗	0.340	0.0001	−4.794	−3.148
	Period 2	Period 3	−0.500	0.344	0.444	−1.333	0.333
Urea	Period 1	Period 2	0.629∗	0.226	0.018	0.081	1.178
		Period 3	0.826∗∗∗	0.173	0.0001	0.408	1.245
	Period 2	Period 3	0.197	0.172	0.761	−0.219	0.613
Creatinine	Period 1	Period 2	9.538∗∗∗	1.964	0.0001	4.778	14.298
		Period 3	13.083∗∗∗	1.780	0.0001	8.768	17.398
	Period 2	Period 3	−3.545∗	1.341	0.027	−6.795	−0.295

∗: P < 0.05, ∗∗∗: P < 0.001.