Table 1 Baseline characteristics of the participants

Age (years)

47.8 (9.50)

47.21 (8.47)

48.35 (10.50)

0.78

Height (cm)

163.47 (7.35)

164.25 (8.14)

163.95 (8.15)

0.43

Gender

Male

29 (48.34)

14 (46.66)

17 (56.66)

0.15

Female

31 (51.66)

16 (53.34)

13 (43.34)

Weight (kg)

72.47(8.75)

70.68(8.34)

74.38(8.92)

0.43

Ethnic, No (%)

Fars

13(21.67%)

7(23.33%)

6(20%)

0.58

Lor/Bakhtiari

19(31.66%)

9(30%)

10(33.33%)

Arab

28(46.67%)

14(46.67)

14(44.67%)

Duration of COVID-19 (days)

9.52(2.46)

9.90(3.40)

9.10(2.14)

0.74

The duration of having symptoms until positive test (days)

5.62 (2.45)

5.74 (2.68)

5.48 (2.21)

0.68

Acute COVID-19 symptoms, No. (%)

Dyspnea

47(78.33%)

24(80%)

23(76.66%)

0.85

Cough

41(68.33%)

17(56.66%)

24(80%)

0.04

Sputum

6(10%)

2(6.66%)

4(13.33%)

0.31

Fatigue

25(41.67%)

15(50%)

10(33.34%)

0.04

Diarrhea

17(28.33%)

8(26.66%)

9(0.30)

0.51

Sore throat

30(50%)

14(46.67%)

16(53.32%)

0.31

Duration of hospitalization (days)

7.3(4.10)

7.32(5.07)

7.28(4.65)

0.84

Body temperature

36.68(0.38)

36.60(0.35)

36.76(0.37)

0.73

Lung involvement with COVID-19(%)

Mild

23(38.33%)

13(43.34)

10(33.34)

0.31

Moderate

28(46.67%)

13(43.34)

15(50)

Severe

9(15%)

4 (13.32)

5 (16.66)

Calorie (kcal/day)

1827.34 ± 390.44

1843.18 ± 436.25

1812.52 ± 373.51

0.65

Carbohydrate (%)

54.62 ± 6.19

54.35 ± 6.47

55.83 ± 7.76

0.74

Protein (%)

15.04 ± 3.85

14.73 ± 3.65

15.12 ± 4.12

0.61

Fat (%)

29.43 ± 4.77

29.36 ± 4.53

29.65 ± 5.12

0.55

Vitamin E (mg)

9.36(3.70,15.73)

9.25(3.32,14.32)

10.68(4.48,18.75)

0.43

Vitamin C (mg)

58.19(30.19,103.55)

53.29(32.25,96.76)

63.79(40.69,102.33)

0.22

Vitamin A (mg)

543.27 ± 279.92

537.23 ± 283.93

548.19 ± 265.62

0.63

Magnesium (mg)

360.17 ± 105.90

357.87 ± 110.20

368.32 ± 107.18

0.42