Table 2 Sex-stratified study parameters and comparison of acute COVID-19 infection (acute) and FU1–FU2.

From: Laboratory parameters related to disease severity and physical performance after reconvalescence of acute COVID-19 infection

 

Gender

Acute

FU1

FU2

Median (IQR)

p-value*

meDian (IQR)

p-value **

Median (IQR)

Neopterin [nmol/L]

Male

26.3 (17.7–44.4)

 < 0.001

8.9 (8.0–13.0)

n.s

7.8 (7.1–9.3)

Female

41.1 (18.3–45.7)

0.038

12.5 (9.1–18.9)

0.069

6.5 (5.8–8.9)

Kyn [µmol/L]

Male

3.1 (2.3–3.8)

0.049

2.3 (1.8–3.0)

n.s

2.5 (2.2–2.7)

Female

3.5 (3.1–4.0)

0.051

2.4 (2.2–2.5)

n.s

2.3 (2.0–3.1)

Trp [µmol/L]

Male

45.4 (40.8–52.4)

0.040

52.8 (48.2–59.8)

0.061

62.0 (58.8–69.3)

Female

41.2 (35.7–51.5)

n.s

54.4 (40.8–54.9)

0.012

65.9 (60.9–70.6)

Phe [µmol/L]

Male

125.3 (114.2–134.8)

 < 0.001

69.9 (64.4–87.2)

n.s

84.1 (73.4–92.5)

Female

129.9 (113.7–157.1)

0.008

60.9 (56.4–69.3)

0.025

73.3 (68.7–95.1)

Tyr [µmol/L]

Male

66.3 (58.9–72.5)

n.s

58.3 (54.0–67.2)

0.020

81.0 (66.8–92.2)

Female

62.6 (57.9–73.4)

n.s

59.8 (57.3–72.9)

0.012

78.3 (68.3–91.0)

Kyn/Trp [µmol/mmol]

Male

63.8 (51.2–83.4)

0.006

39.3 (33.7–55.5)

n.s

37.6 (36.3–44.1)

Female

82.6 (61.4–96.9)

0.028

45.5 (41.0–56.8)

0.025

36.0 (32.3–44.5)

Phe/Tyr [µmol/µmol]

Male

1.9 (1.7–2.1)

 < 0.001

1.2 (1.0–1.4)

0.088

1.0 (0.9–1.1)

Female

2.0 (1.6–2.3)

0.008

1.0 (1.0–1.1)

n.s

1.0 (0.9–1.0)

Nitrite [µmol/L]

Male

23.3 (13.8–45.4)

n.s

29.6 (11.8–55.6)

0.005

8.8 (8.4–17.2)

Female

22.4 (13.3–33.2)

n.s

16.5 (10.7–52.4)

0.036

7.7 (5.7–14.9)

Folate [µg/L]

Male

10.3 (5.3–11.9)

0.048

5.6 (4.5–8.3)

0.028

7.7 (6.1–10.8)

Female

15.4 (13.1–17.6)

n.s

7.5 (4.9–16.6)

n.s

16.9 (10.3–20.0)

Vitamin B12 [pmol/mL]

Male

376 (268–493)

0.026

234 (188–327)

n.s

282 (217–395)

Female

604 (374–826)

n.s

352 (311–535)

n.s

383 (302–581)

WBC [G/L]

Male

6.0 (3.6–7.4)

n.s

6.3 (5.3–7.4)

n.s

6.9 (5.9–7.7)

Female

6.5 (6.1–10.4)

n.s

7.1 (6.5–8.4)

0.018

5.7 (5.3–7.2)

Hemoglobin [g/L]

Male

124 (119–137)

n.s

134 (123–145)

 < 0.001

156 (139–161)

Female

116 (112–136)

n.s

124 (122–134)

0.063

133 (128–137)

MCV [fL]

Male

89.0 (86.4–91.3)

 < 0.001

90.8 (89.4–94.6)

0.022

89.6 (88.1–92.1)

Female

91.2 (87.5–93.3)

0.017

93.5 (91.7–93.9)

0.018

88.5 (86.4–90.0)

MCH [pg]

Male

30.9 (30.2–31.5)

n.s

30.5 (29.8–31.6)

0.018

31.1 (30.8–31.6)

Female

30.8 (29.3–31.9)

n.s

30.9 (29.9–32.0)

0.028

29.9 (28.1–31.4)

Lymphocytes [% of WBC]

Male

15.8 (10.0–23.9)

0.001

25.2 (21.0–29.8)

0.027

31.6 (26.7–35.2)

Female

10.7 (9.4–34.3)

n.s

29.4 (18.8–33.3)

n.s

31.6 (25.4–35.0)

CRP [mg/dL]

Male

9.41 (3.5–17.06)

 < 0.001

0.20 (0.06–0.56)

n.s

0.15 (0.06–0.30)

Female

3.42 (1.94–21.53)

0.018

0.13 (0.08–0.63)

n.s

0.25 (0.09–0.82)

IL-6 [ng/L]

Male

85.8 (32.6–205.4)

 < 0.001

3.1 (1.5–7.3)

n.s

1.5 (1.5–4.3)

Female

28.5 (12.3–171.8)

0.012

3.2 (1.5–6.5)

0.068

1.5 (1.5–2.6)

LDH [U/L]

Male

352 (252–400)

 < 0.001

206 (193–224)

n.s

195 (171–220)

Female

314 (238–382)

0.093

221 (213–251)

n.s

201 (189–238)

Total serum iron [µmol/L]

Male

4.2 (3.1–5.7)

 < 0.001

15.4 (8.7–20.1)

n.s

15.2 (12.8–21.0)

Female

4.3 (2.4–15.8)

0.012

16.3 (11.4–17.7)

n.s

14.0 (8.0–18.2)

Ferritin [µg/L]

Male

1420 (572–2053)

 < 0.001

280 (137–469)

0.004

160 (112–272)

Female

632 (469–973)

0.018

193 (91–305)

0.063

91 (50–170)

Transferrin saturation [%]

Male

13.0 (10.0–17.0)

0.004

26.0 (13.0–37.0)

n.s

24.0 (20.0–32.0)

Female

10.0 (9.0–33.0)

0.063

25.5 (19.0–31.0)

n.s

22.0 (12.0–33.5)

  1. Median values and IQR of study parameters and longitudinal comparison between groups.
  2. *p value comparing parameters during acute COVID-19 infection (acute) and first follow-up (FU1); **p-value comparing parameters at FU1 and FU2; bold indicates significant differences; no significant difference (n.s.). white blood count (WBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH).