Assessment of subclinical renal dysfunction in post COVID-19 patients

Figures & data

Table 1. Comparison between the different studied periods according to S.Creatinine (n = 10).

Creatinine	Before	30 min	1 hr	2hrs	3hrs	4hrs
Min. – Max.	0.71–1.0	0.69–0.98	0.64–0.95	0.58–0.89	0.60–0.91	0.64–0.94
Mean ± SD.	0.93 ± 0.09	0.88 ± 0.09	0.83 ± 0.10	0.77 ± 0.10	0.80 ± 0.10	0.84 ± 0.09
Median (IQR)	0.94 (0.91–1.0)	0.90 (0.83–0.93)	0.83 (0.75–0.90)	0.78 (0.70–0.84)	0.80 (0.74–0.89)	0.84 (0.79–0.92)
F(p)	98.038* (<0.001*)
p1		0.003*	<0.001*	<0.001*	<0.001*	<0.001*
		<0.001*	<0.001*		<0.001*	<0.001*

F: F test (ANOVA) with repeated measures, Sig. bet. periods was done using Post Hoc Test (Bonferroni).

p: p value for comparing between the studied periods

p₁: p value for comparing between before and each other periods.

p₂: p value for comparing between 2 hrs and each other periods.

*Statistically significant at p ≤ 0.05.

IQR: Inter quartile range SD: Standard deviation.

Table 2. Comparison between the two studied groups according to GFR.

		Cases (n = 31)	Control (n = 31)	Test of sig.	p
GFR	1^st
	Min. – Max.	91.0–119.0	103.0–119.0	U = 384.50	0.174
	Mean ± SD.	111.5 ± 7.16	114.5 ± 4.0
	Median (IQR)	114.0 (109–116)	115.0 (112–118)
	2^nd
	Min. – Max.	112.0–145.0	140.0–150.0	U = 22.0*	<0.001*
	Mean ± SD.	126.58 ± 8.70	145.94 ± 3.28
	Median (IQR)	124.0 (121.5–135)	147.0 (143–149)
	p1	<0.001^*	<0.001^*

U: Mann Whitney test.

t: Student t-test

p: p value for comparing between cases and control.

p₁: p value for Paired t-test or Wilcoxon signed ranks test for comparing between 1^st and 2^nd.

*Statistically significant at p ≤ 0.05.

IQR: Inter quartile range SD: Standard deviation.

GFR = Glomerular Filtration Rate.

Table 3. Comparison between the two studied groups according to RFR.

	Cases (n = 31)	Control (n = 31)	Test of sig.	p
RFR
Min. – Max.	5.0–25.0	21.0–37.0	U = 26.0*	<0.001*
Mean ± SD.	11.19 ± 4.76	25.81 ± 4.42
Median (IQR)	10.0 (8.0–14.0)	25.0 (22.0–27.50)

t: Student t test, U: Mann Whitney test.

p: p value for comparing between cases and control.

*Statistically significant at p ≤ 0.05.

IQR: Inter quartile range SD: Standard deviation.

RFR= Renal Functional Reserve.

Figure 1. Comparison between the different studied periods according to S.Creatinine (n = 10).

Figure 2. Comparison between the two studied groups according to GFR.

Figure 3. Comparison between the two studied groups according to RFR.