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. 2021 Aug 2;17(4):375–384. doi: 10.1007/s12519-021-00440-1

Table 2.

Blood routine results of children with coronavirus disease 2019

Variables All patients (n = 217) < 1 y patients (n = 40) 1–6 y patients (n = 58) 7–10 y patients (n = 65) 11–15 y patients (n = 54) P
White blood cell count (× 109/L) Normal range (age adjusted) 6.0–15.5 5.0–15.5 4.5–13.5 4.5–13.0
 Mean ± SD 6.86 ± 0.17 8.21 ± 0.50 7.47 ± 0.31 6.21 ± 0.27 5.98 ± 0.24
 Below normal, n (%) 65 (30.0) 7 (17.5) 10 (17.2) 27 (41.5) 21 (38.9) 0.009
 Normal, n (%) 146 (67.3) 30 (75.0) 47 (81.0) 37 (56.9) 32 (59.3)
 Above normal, n (%) 6 (2.8) 3 (7.5) 1 (1.7) 1 (1.5%) 1 (1.9)
Neutrophil count (× 109/L) Normal range (age adjusted) 1.5–8.5 1.5–8.0 1.5–8.5 1.8–8.0
 Mean ± SD 2.91 ± 0.11 2.39 ± 0.27 2.83 ± 0.24 3.05 ± 0.18 3.23 ± 0.18
 Below normal, n (%) 17 (7.8) 8 (20.0) 6 (10.3) 3 (4.6) 0 (0.0) 0.019
 Normal, n (%) 187 (86.2) 29 (72.5) 48 (82.8) 59 (90.8) 51 (94.4)
 Above normal, n (%) 13 (6.0) 3 (7.5) 4 (6.9) 3 (4.6) 3 (5.6)
Lymphocyte count (× 109/L) Normal range (age adjusted) 4.0–10.5 2.0–8.0 1.5–6.5 1.2–5.2
 Mean ± SD 3.24 ± 0.12 4.89 ± 0.37 3.87 ± 0.24 2.56 ± 0.13 2.16 ± 0.82
 Below normal, n (%) 14 (6.5) 4 (10.0) 4 (6.9) 3 (4.6) 3 (5.6)  < 0.001
 Normal, n (%) 182 (83.9) 24 (60.0) 46 (79.3) 62 (95.4) 50 (92.6)
 Above normal, n (%) 21 (9.7) 12 (30.0) 8 (13.8) 0 (0.0) 1 (1.9)
Hemoglobin (g/L) Normal range (age adjusted) 113–141 115–140 115–155 120–160
 Mean ± SD 126 ± 0.92 113 ± 1.99 124 ± 1.18 127 ± 1.25 136 ± 1.82
 Below normal, n (%) 32 (14.7) 19 (47.5) 5 (8.6) 5 (7.7) 3 (5.6)  < 0.001
 Normal, n (%) 157 (72.4) 21 (52.5 51 (87.9) 55 (84.6) 30 (55.6)
 Above normal, n (%) 28 (12.9) 0 (0.0) 2 (3.4) 5 (7.7) 21 (38.9)
Platelet count (× 109/L) Normal range (age adjusted) 150–400 100–378 100–378 100–378
 Mean ± SD 305 ± 7.09 389 ± 22.81 303 ± 11.37 286 ± 10.07 268 ± 10.53
 Below normal, n (%) 1 (0.5) 0 (0.0) 0 (0.0) 0 (0.0) 1 (1.9)  < 0.001
 Normal, n (%) 171 (78.8) 18 (45.0) 45 (77.6) 58 (89.2) 50 (92.6)
 Above normal, n (%) 45 (20.7) 22 (55.0) 13 (22.4) 7 (10.8) 3 (5.6)
Monocyte (× 109 g/L) Normal range (age adjusted) 0.26–1.7 0.26–0.4 0.26–0.4 0.26–0.4
 Mean ± SD 0.47 ± 0.01 0.56 ± 0.42 0.48 ± 0.03 0.41 ± 0.02 0.44 ± 0.02
 Below normal, n (%) 21 (9.7) 1 (2.5) 2 (3.4) 11 (16.9) 7 (13.0) 0.022
 Normal, n (%) 83 (38.2) 11 (27.5) 28 (48.3) 25 (38.5) 19 (35.2)
 Above normal, n (%) 113 (52.1) 28 (70.0) 28 (48.3) 29 (44.6) 28 (51.9)

Normal range (age-adjusted) of each item has been shown in bold. SD standard deviation