Table 3.

Comparison of metals between different grades of COVID-19 cases and controls on the baseline sample

		Magnesium	Copper	Zinc
Control	N	50	50	50
	Median	2.24	150.66	60.50
	25th percentile	2.13	118.85	48.22
	75th percentile	2.36	140.96	74.59
Mild COVID-19	N	50	50	50
	Median	2.26	145.41	56.705
	25th percentile	1.93	133.1	48.84
	75th percentile	2.39	164.41	72.95
Moderate COVID-19	N	50	50	50
	Median	2.28	135.755	50.595
	25th percentile	2.17	125.66	39.08
	75th percentile	2.42	158.38	69.12
Severe COVID-19	N	50	50	50
	Median	2.23	148.22	42.89
	25th percentile	1.91	121.66	39.65
	75th percentile	2.53	167.29	47.53
	p value	0.3727	0.0308	0.0001

Statistical test: Kruskal–Wallis

All bold values signifies p<0.05