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. 2023 Jul 11;23:473. doi: 10.1186/s12903-023-03208-3

Table 4.

Hematological data

Variable COVID-19 Severity Mean ± Standard Deviation (number of available data) ANCOVAa
Periodontitis Severity Group Element b P Value
HP MP SP Total
Complete Blood Count (patients excluded = 4)
Max WBC (#/μL) MC 9156 ± 4468 (27) 10,292 ± 4922 (26) 14,809 ± 3260 (11) 10,589 ± 4855 (64) COVID-19 0.178
SC 14,170 ± 8518 (10) 11,177 ± 4746 (13) 13,600 ± 5751 (31) 13,122 ± 6116 (54) Periodontitis 0.116
Total 10,511 ± 6136 (37) 10,587 ± 4820 (42) 13,917 ± 5204 (43) 11,748 ± 5589 (118)

COVID-19

x

Periodontitis

0.161
Min WBC (#/μL) MC 6556 ± 2864 (27) 6077 ± 2075 (26) 10,209 ± 4487 (11) 6989 ± 3244 (64) COVID-19 0.273
SC 9650 ± 5653 (10) 7369 ± 3705 (13) 8297 ± 3631 (31) 8324 ± 4068 (54) Periodontitis 0.037 *
Total 7392 ± 3982 (37) 6508 ± 2747 (42) 8798 ± 3909 (43) 7600 ± 3689 (118)

COVID-19

x

Periodontitis

0.032 *

Average WBC

(#/μL)

MC 7822 ± 3398 (27) 8230 ± 3222 (26) 12,388 ± 3718 (11) 8772 ± 3724 (64) COVID-19 0.174
SC 11,900 ± 6843 (10) 9189 ± 3845 (13) 10,779 ± 4223 (31) 10,604 ± 4714 (54) Periodontitis 0.065
Total 8924 ± 4839 (37) 8550 ± 3422 (42) 11,200 ± 4115 (43) 9610 ± 4286 (118)

COVID-19

x

Periodontitis

0.059
Max Neutrophils (%) MC 81.76 ± 12.96 (27) 83.50 ± 7.76 (26) 87.64 ± 4.41 (11) 83.48 ± 10.03 (64) COVID-19 0.409
SC 87.00 ± 8.78 (10) 84.46 ± 8.69 (13) 87.13 ± 9.67 (31) 86.46 ± 9.19 (54) Periodontitis 0.545
Total 83.17 ± 12.09 (37) 83.82 ± 7.98 (42) 87.26 ± 8.56 (43) 84.84 ± 9.73 (118)

COVID-19

x

Periodontitis

0.653
Min Neutrophils (%) MC 70.83 ± 14.03 (27) 72.38 ± 7.78 (26) 73.82 ± 13.17 (11) 71.97 ± 11.57 (64) COVID-19 0.492
SC 77.80 ± 8.00 (10) 70.38 ± 11.27 (13) 73.32 ± 11.16 (31) 73.44 ± 10.77 (54) Periodontitis 0.678
Total 72.71 ± 12.96 (37) 71.72 ± 8.99 (42) 73.45 ± 11.55 (43) 72.65 ± 11.19 (118)

COVID-19

x

Periodontitis

0.237
Average Neutrophils (%) MC 76.96 ± 12.30 (27) 78.21 ± 7.02 (26) 80.54 ± 6.95 (11) 78.09 ± 9.55 (64) COVID-19 0.256
SC 82.22 ± 8.27 (10) 78.90 ± 8.51 (13) 81.36 ± 8.35 (31) 80.92 ± 8.30 (54) Periodontitis 0.695
Total 78.38 ± 11.49 (37) 78.44 ± 7.44 (42) 81.14 ± 7.93 (43) 79.38 ± 9.08 (118)

COVID-19

x

Periodontitis

0.633
Max Lymphocytes (%) MC 22.89 ± 13.62 (27) 21.92 ± 7.04 (26) 19.64 ± 8.73 (11) 21.94 ± 10.47 (64) COVID-19 0.275
SC 16.30 ± 8.55 (10) 22.69 ± 9.79 (13) 18.68 ± 8.55 (31) 19.20 ± 8.96 (54) Periodontitis 0.442
Total 21.11 ± 12.69 (37) 22.18 ± 7.94 (42) 18.93 ± 8.50 (43) 20.69 ± 9.86 (118)

COVID-19

x

Periodontitis

0.287
Min Lymphocytes (%) MC 14.03 ± 11.10 (27) 12.77 ± 6.20 (26) 9.00 ± 3.79 (11) 12.65 ± 8.46 (64) COVID-19 0.485
SC 9.60 ± 7.63 (10) 12.69 ± 7.42 (13) 9.26 ± 8.44 (31) 10.15 ± 8.05 (54) Periodontitis 0.365
Total 12.84 ± 10.37 (37) 12.74 ± 6.53 (42) 9.19 ± 7.46 (43) 11.51 ± 8.33 (118)

COVID-19

x

Periodontitis

0.598
Average Lymphocytes (%) MC 18.39 ± 11.96 (27) 17.15 ± 5.64 (26) 14.22 ± 4.65 (11) 17.17 ± 8.79 (64) COVID-19 0.234
SC 12.95 ± 8.15 (10) 16.59 ± 7.67 (13) 13.69 ± 7.55 (31) 14.25 ± 7.66 (54) Periodontitis 0.467
Total 16.92 ± 11.22 (37) 16.97 ± 6.29 (42) 13.83 ± 6.86 (43) 15.84 ± 8.39 (118)

COVID-19

x

Periodontitis

0.467
Max RBC (× 106/μL) MC 4.47 ± 0.95 (27) 4.72 ± 0.85 (26) 4.92 ± 1.00 (11) 4.65 ± 0.92 (64) COVID-19 0.952
SC 4.65 ± 0.99 (10) 4.71 ± 1.12 (13) 4.72 ± 1.09 (31) 4.70 ± 1.06 (54) Periodontitis 0.982
Total 4.52 ± 0.95 (37) 4.72 ± 0.93 (42) 4.77 ± 1.06 (43) 4.67 ± 0.98 (118)

COVID-19

x

Periodontitis

0.933
Min RBC (× 106/μL) MC 4.16 ± 0.90 (27) 4.13 ± 0.75 (26) 4.34 ± 1.10 (11) 4.18 ± 0.87 (64) COVID-19 0.456
SC 4.04 ± 1.00 (10) 4.16 ± 1.26 (13) 3.99 ± 1.21 (31) 4.04 ± 1.17 (54) Periodontitis 0.862
Total 4.13 ± 0.92 (37) 4.14 ± 0.93 (42) 4.09 ± 1.18 (43) 4.12 ± 1.01 (118)

COVID-19

x

Periodontitis

0.844
Average RBC (× 106/μL) MC 4.31 ± 0.92 (27) 4.39 ± 0.75 (26) 4.61 ± 1.02 (11) 4.40 ± 0.86 (64) COVID-19 0.671
SC 4.35 ± 0.92 (10) 4.41 ± 1.15 (13) 4.35 ± 1.08 (31) 4.36 ± 1.05 (54) Periodontitis 0.884
Total 4.32 ± 0.90 (37) 4.40 ± 0.89 (42) 4.42 ± 1.06 (43) 4.38 ± 0.95 (118)

COVID-19

x

Periodontitis

0.925
Max Hemoglobin (g/dL) MC 12.53 ± 2.80 (27) 13.55 ± 2.52 (26) 14.29 ± 2.89 (11) 13.25 ± 2.75 (64) COVID-19 0.552
SC 13.05 ± 2.88 (10) 13.05 ± 2.27 (13) 13.25 ± 3.15 (31) 13.17 ± 2.86 (54) Periodontitis 0.949
Total 12.67 ± 2.79 (37) 13.39 ± 2.42 (42) 13.52 ± 3.08 (43) 13.21 ± 2.79 (118)

COVID-19

x

Periodontitis

0.854
Min Hemoglobin (g/dL) MC 11.66 ± 2.66 (27) 11.83 ± 2.12 (26) 12.29 ± 2.85 (11) 11.83 ± 2.46 (64) COVID-19 0.164
SC 11.11 ± 2.97 (10) 11.32 ± 2.74 (13) 11.00 ± 3.27 (31) 11.10 ± 3.05 (54) Periodontitis 0.708
Total 11.51 ± 2.72 (37) 11.66 ± 2.32 (42) 11.34 ± 3.18 (43) 11.50 ± 2.76 (118)

COVID-19

x

Periodontitis

0.940
Average Hemoglobin (g/dL) MC 12.09 ± 2.72 (27) 12.57 ± 2.17 (26) 13.22 ± 2.66 (11) 12.48 ± 2.49 (64) COVID-19 0.298
SC 12.09 ± 2.67 (10) 12.11 ± 2.30 (13) 12.10 ± 3.00 (31) 12.10 ± 2.74 (54) Periodontitis 0.769
Total 12.09 ± 2.67 (37) 12.42 ± 2.20 (42) 12.39 ± 2.93 (43) 12.31 ± 2.60 (118)

COVID-19

x

Periodontitis

0.957
Max Hematocrit (%) MC 38.40 ± 8.07 (27) 41.57 ± 6.99 (26) 43.21 ± 7.64 (11) 40.51 ± 7.69 (64) COVID-19 0.684
SC 39.60 ± 7.87 (10) 40.67 ± 7.93 (13) 40.80 ± 9.65 (31) 40.55 ± 8.81 (54) Periodontitis 0.973
Total 38.73 ± 7.92 (37) 41.27 ± 7.23 (42) 41.43 ± 9.14 (43) 40.53 ± 8.19 (118)

COVID-19

x

Periodontitis

0.948
Min Hematocrit (%) MC 36.08 ± 7.64 (27) 36.33 ± 6.41 (26) 38.24 ± 8.18 (11) 36.55 ± 7.18 (64) COVID-19 0.309
SC 35.31 ± 9.47 (10) 35.95 ± 8.91 (13) 34.42 ± 10.04 (31) 34.95 ± 9.52 (54) Periodontitis 0.672
Total 35.87 ± 8.04 (37) 36.20 ± 7.22 (42) 35.42 ± 9.64 (43) 35.82 ± 8.34 (118)

COVID-19

x

Periodontitis

0.843
Average Hematocrit (%) MC 36.86 ± 8.18 (27) 38.59 ± 6.37 (26) 37.80 ± 9.50 (11) 37.73 ± 7.66 (64) COVID-19 0.899
SC 36.96 ± 7.41 (10) 38.14 ± 7.91 (13) 37.54 ± 9.20 (31) 37.58 ± 8.46 (54) Periodontitis 0.568
Total 36.89 ± 7.88 (37) 38.44 ± 6.82 (42) 37.61 ± 9.16 (43) 37.66 ± 8.00 (118)

COVID-19

x

Periodontitis

0.913
Max Platelets (× 103/μL) MC 216.3 ± 62.9 (27) 227.3 ± 80.9 (26) 300.7 ± 115.2 (11) 235.3 ± 85.2 (64) COVID-19 0.315
SC 251.3 ± 60.2 (10) 224.2 ± 107.3 (13) 213.3 ± 100.6 (31) 222.9 ± 95.7 (54) Periodontitis 0.114
Total 225.8 ± 63.3 (37) 226.3 ± 89.1 (42) 236.2 ± 110.2 (43) 229.6 ± 90.0 (118)

COVID-19

x

Periodontitis

0.008 *
Min Platelets (× 103/μL) MC 176.7 ± 65.9 (27) 165.0 ± 56.8 (26) 239.2 ± 94.7 (11) 182.7 ± 72.1 (64) COVID-19 0.150
SC 206.4 ± 40.8 (10) 162.2 ± 91.6 (13) 148.2 ± 89.9 (31) 162.4 ± 85.1 (54) Periodontitis 0.068
Total 184.8 ± 61.1 (37) 164.1 ± 69.1 (42) 172.0 ± 98.7 (43) 173.4 ± 78.6 (118)

COVID-19

x

Periodontitis

0.001 *
Average Platelets (× 103/μL) MC 196.37 ± 61.80 (27) 197.41 ± 62.80 (26) 270.61 ± 100.41 (11) 209.55 ± 74.35 (64) COVID-19 0.164
SC 226.03 ± 42.60 (10) 192.56 ± 95.46 (13) 178.46 ± 91.41 (31) 190.66 ± 86.17 (54) Periodontitis 0.085
Total 204.39 ± 58.23 (37) 195.79 ± 74.01 (42) 202.59 ± 101.26 (43) 200.91 ± 80.18 (118)

COVID-19

x

Periodontitis

0.002 *

MCV

(fL)

MC 86.55 ± 5.02 (27) 88.36 ± 6.85 (26) 89.03 ± 8.52 (11) 87.71 ± 6.45 (64) COVID-19 0.348
SC 85.19 ± 3.97 (10) 87.29 ± 4.55 (13) 86.88 ± 9.74 (31) 86.67 ± 7.85 (54) Periodontitis 0.760
Total 86.18 ± 4.74 (37) 88.00 ± 6.14 (42) 87.45 ± 9.38 (43) 87.23 ± 7.11 (118)

COVID-19

x

Periodontitis

0.945

MCH

(pg)

MC 28.13 ± 1.80 (27) 28.75 ± 2.80 (26) 28.89 ± 3.65 (11) 28.51 ± 2.59 (64) COVID-19 0.273
SC 27.74 ± 1.98 (10) 27.79 ± 1.88 (13) 28.05 ± 4.32 (31) 27.93 ± 3.47 (54) Periodontitis 0.903
Total 28.02 ± 1.83 (37) 28.43 ± 2.55 (42) 28.27 ± 4.13 (43) 28.24 ± 3.02 (118)

COVID-19

x

Periodontitis

0.947

MCHC

(g/dL)

MC 32.38 ± 1.28 (27) 32.44 ± 1.44 (26) 32.39 ± 1.80 (11) 32.41 ± 1.42 (64) COVID-19 0.439
SC 32.55 ± 1.54 (10) 31.81 ± 1.20 (13) 32.14 ± 1.75 (31) 32.14 ± 1.59 (54) Periodontitis 0.375
Total 32.43 ± 1.34 (37) 32.23 ± 1.38 (42) 32.21 ± 1.74 (43) 32.28 ± 1.50 (118)

COVID-19

x

Periodontitis

0.637
Average ESR (mm) MC 48.35 ± 36.62 (24) 42.62 ± 30.90 (25) 46.83 ± 37.72 (9) 45.64 ± 33.91 (58) COVID-19 0.230
SC 63.70 ± 34.80 (10) 54.30 ± 46.14 (13) 48.16 ± 37.38 (30) 52.604 ± 38.94 (53) Periodontitis 0.965
Total 52.86 ± 36.27 (34) 46.61 ± 36.62 (28) 47.85 ± 36.96 (39) 48.96 ± 36.40 (111)

COVID-19

x

Periodontitis

0.570
Venous Blood Gas
pH MC 7.401 ± 0.086 (24) 7.394 ± 0.053 (26) 7.379 ± 0.060 (9) 7.394 ± 0.069 (59) COVID-19 0.972
SC 7.382 ± 0.046 (8) 7.412 ± 0.046 (14) 7.392 ± 0.084 (29) 7.396 ± 0.070 (51) Periodontitis 0.872
Total 7.396 ± 0.078 (32) 7.400 ± 0.051 (40) 7.389 ± 0.079 (38) 7.395 ± 0.069 (110)

COVID-19

x

Periodontitis

0.707
pCO2 (mmHg) MC 39.61 ± 11.15 (24) 36.98 ± 14.56 (26) 39.87 ± 7.62 (9) 38.49 ± 12.27 (59) COVID-19 0.619
SC 35.99 ± 10.17 (8) 35.57 ± 9.66 (14) 39.43 ± 9.99 (29) 37.83 ± 9.90 (51) Periodontitis 0.821
Total 38.71 ± 10.87 (32) 36.49 ± 12.94 (40) 39.53 ± 9.38 (38) 38.18 ± 11.19 (110)

COVID-19

x

Periodontitis

0.665

pO2

(mmHg)

MC 31.48 ± 12.88 (24) 37.53 ± 12.80 (26) 36.14 ± 14.96 (9) 34.86 ± 13.25 (59) COVID-19 0.022 *
SC 39.04 ± 10.52 (8) 52.56 ± 25.50 (14) 41.16 ± 17.39 (29) 43.96 ± 19.57 (51) Periodontitis 0.108
Total 33.37 ± 12.62 (32) 42.79 ± 19.35 (40) 39.97 ± 16.79 (38) 39.08 ± 17.03 (110)

COVID-19

x

Periodontitis

0.452
TCO2 (mmol/L) MC 25.32 ± 4.49 (24) 23.22 ± 7.80 (26) 24.75 ± 3.87 (9) 24.31 ± 6.11 (59) COVID-19 0.614
SC 22.57 ± 6.22 (8) 23.38 ± 6.04 (13) 25.28 ± 6.44 (29) 24.35 ± 6.28 (50) Periodontitis 0.739
Total 24.63 ± 5.02 (32) 23.27 ± 7.18 (39) 25.15 ± 5.89 (38) 24.33 ± 6.16 (109)

COVID-19

x

Periodontitis

0.476
HCO3 (mmol/L) MC 24.13 ± 4.28 (24) 22.08 ± 7.39 (26) 23.53 ± 3.72 (9) 23.13 ± 5.80 (59) COVID-19 0.630
SC 21.53 ± 6.00 (8) 22.29 ± 5.84 (13) 24.09 ± 6.24 (29) 23.21 ± 6.07 (50) Periodontitis 0.729
Total 23.48 ± 4.80 (32) 22.15 ± 6.84 (39) 23.95 ± 5.70 (38) 23.17 ± 5.90 (109)

COVID-19

x

Periodontitis

0.476

SO2

(%)

MC 64.28 ± 15.48 (18) 67.81 ± 15.63 (24) 72.96 ± 14.63 (7) 67.25 ± 15.39 (49) COVID-19 0.191
SC 68.18 ± 17.69 (8) 79.72 ± 11.38 (13) 75.18 ± 14.76 (25) 75.25 ± 14.63 (46) Periodontitis 0.418
Total 65.48 ± 15.93 (26) 72.00 ± 15.24 (37) 74.70 ± 14.53 (32) 71.12 ± 15.48 (95)

COVID-19

x

Periodontitis

0.422
Coagulation (patients excluded = 4)

Max PT

(s)

MC 13.19 ± 2.17 (26) 13.15 ± 1.92 (26) 13.44 ± 1.75 (10) 13.22 ± 1.98 (62) COVID-19 0.013 *
SC 18.60 ± 16.59 (10) 13.65 ± 1.92 (13) 18.87 ± 10.26 (30) 17.54 ± 10.59 (53) Periodontitis 0.089
Total 14.69 ± 8.95 (36) 13.32 ± 1.91 (39) 17.51 ± 9.20 (40) 15.21 ± 7.61 (115)

COVID-19

x

Periodontitis

0.276

Min PT

(s)

MC 12.91 ± 1.36 (26) 12.99 ± 1.45 (26) 13.44 ± 1.75 (10) 13.03 ± 1.45 (62) COVID-19 0.016*
SC 15.67 ± 8.34 (10) 12.88 ± 1.37 (13) 16.03 ± 5.06 (30) 15.19 ± 5.34 (53) Periodontitis 0.047 *
Total 13.68 ± 4.56 (36) 12.95 ± 1.41 (39) 15.38 ± 4.58 (40) 14.03 ± 3.91 (115)

COVID-19

x

Periodontitis

0.204

Average PT

(s)

MC 13.07 ± 1.76 (26) 13.06 ± 1.62 (26) 13.44 ± 1.75 (10) 13.13 ± 1.68 (62) COVID-19 0.010 *
SC 17.16 ± 12.54 (10) 13.22 ± 1.47 (13) 17.15 ± 6.60 (30) 16.19 ± 7.41 (53) Periodontitis 0.056
Total 14.21 ± 6.79 (36) 13.11 ± 1.55 (39) 16.22 ± 5.98 (40) 14.54 ± 5.38 (115)

COVID-19

x

Periodontitis

0.214
Max INR MC 1.148 ± 0.193 (26) 1.140 ± 0.174 (26) 1.170 ± 0.134 (10) 1.148 ± 0.174 (62) COVID-19 0.014 *
SC 1.749 ± 1.953 (10) 1.195 ± 0.192 (13) 1.656 ± 0.934 (30) 1.561 ± 1.096 (53) Periodontitis 0.114
Total 1.315 ± 1.040 (36) 1.158 ± 0.180 (39) 1.535 ± 0.836 (40) 1.338 ± 0.779 (115)

COVID-19

x

Periodontitis

0.280
Min INR MC 1.116 ± 0.094 (26) 1.121 ± 0.119 (26) 1.170 ± 0.134 (10) 1.127 ± 0.111 (62) COVID-19 0.026 *
SC 1.391 ± 0.918 (10) 1.122 ± 0.114 (13) 1.397 ± 0.510 (30) 1.328 ± 0.555 (53) Periodontitis 0.089
Total 1.193 ± 0.489 (36) 1.121 ± 0.116 (39) 1.340 ± 0.455 (40) 1.220 ± 0.397 (115)

COVID-19

x

Periodontitis

0.288
Average INR MC 1.135 ± 0.146 (26) 1.129 ± 0.135 (26) 1.169 ± 0.134 (10) 1.138 ± 0.138 (62) COVID-19 0.014 *
SC 1.555 ± 1.387 (10) 1.153 ± 0.138 (13) 1.503 ± 0.637 (30) 1.427 ± 0.767 (53) Periodontitis 0.089
Total 1.252 ± 0.739 (36) 1.137 ± 0.135 (39) 1.420 ± 0.572 (40) 1.271 ± 0.548 (115)

COVID-19

x

Periodontitis

0.260

Max PTT

(s)

MC 29.63 ± 5.03 (26) 31.22 ± 14.41 (26) 29.82 ± 4.54 (10) 30.33 ± 9.95 (62) COVID-19 0.016 *
SC 39.87 ± 24.57 (10) 37.05 ± 17.12 (13) 37.80 ± 20.60 (30) 38.00 ± 20.24 (53) Periodontitis 0.896
Total 32.48 ± 13.96 (36) 33.16 ± 15.39 (39) 35.80 ± 18.23 (40) 33.87 ± 15.96 (115)

COVID-19

x

Periodontitis

0.885

Min PTT

(s)

MC 29.33 ± 4.95 (26) 30.55 ± 14.40 (26) 29.82 ± 4.54 (10) 29.92 ± 9.92 (62) COVID-19 0.480
SC 30.76 ± 5.12 (10) 32.22 ± 12.14 (13) 29.34 ± 5.97 (30) 30.32 ± 7.74 (53) Periodontitis 0.572
Total 29.73 ± 4.96 (36) 31.10 ± 13.55 (39) 29.46 ± 5.60 (40) 30.10 ± 8.95 (115)

COVID-19

x

Periodontitis

0.911
Average PTT (s) MC 29.48 ± 4.95 (26) 30.89 ± 14.31 (26) 29.82 ± 4.54 (10) 30.13 ± 9.87 (62) COVID-19 0.054
SC 35.26 ± 12.16 (10) 34.10 ± 12.14 (13) 32.63 ± 9.84 (30) 33.49 ± 10.71 (53) Periodontitis 0.809
Total 31.09 ± 7.90 (36) 31.96 ± 13.55 (39) 31.93 ± 8.85 (40) 31.67 ± 10.36 (115)

COVID-19

x

Periodontitis

0.893
Kidney and Electrolytes (patients excluded = 16)
Max Urea (mg/dL) MC 32.48 ± 7.72 (23) 38.92 ± 12.94 (24) 44.18 ± 12.34 (11) 37.36 ± 11.70 (58) COVID-19  < 0.001 *
SC 65.67 ± 55.31 (9) 51.83 ± 30.91 (12) 68.26 ± 35.48 (27) 63.67 ± 38.59 (48) Periodontitis 0.243
Total 41.81 ± 32.58 (32) 43.22 ± 21.18 (36) 61.29 ± 32.37 (38) 49.27 ± 30.23 (106)

COVID-19

x

Periodontitis

0.436
Min Urea (mg/dL) MC 25.65 ± 6.14 (23) 26.21 ± 10.53 (24) 36.18 ± 10.86 (11) 27.88 ± 9.82 (58) COVID-19 0.098
SC 41.67 ± 42.69 (9) 29.83 ± 10.27 (12) 36.56 ± 18.81 (27) 35.83 ± 23.38 (48) Periodontitis 0.161
Total 30.16 ± 23.47 (32) 27.42 ± 10.44 (36) 36.45 ± 16.75 (38) 31.48 ± 17.69 (106)

COVID-19

x

Periodontitis

0.280

Average Urea

(mg/dL)

MC 29.24 ± 6.29 (23) 32.22 ± 11.05 (24) 40.24 ± 10.49 (11) 32.56 ± 9.98 (58) COVID-19 0.003 *
SC 54.52 ± 51.50 (9) 38.65 ± 13.60 (12) 51.22 ± 24.61 (27) 48.69 ± 29.42 (48) Periodontitis 0.122
Total 36.35 ± 29.08 (32) 34.36 ± 12.16 (36) 48.04 ± 21.92 (38) 39.87 ± 22.51 (106)

COVID-19

x

Periodontitis

0.272
Max Creatinine (mg/dL) MC 0.974 ± 0.171 (23) 1.067 ± 0.199 (24) 1.182 ± 0.322 (11) 1.052 ± 0.227 (58) COVID-19 0.042 *
SC 1.778 ± 2.270 (9) 1.104 ± 0.179 (12) 1.467 ± 1.042 (27) 1.435 ± 1.239 (48) Periodontitis 0.349
Total 1.200 ± 1.219 (32) 1.079 ± 0.191 (36) 1.384 ± 0.899 (38) 1.225 ± 0.867 (106)

COVID-19

x

Periodontitis

0.276
Min Creatinine (mg/dL) MC 0.852 ± 0.165 (23) 0.859 ± 0.174 (24) 0.964 ± 0.186 (11) 0.876 ± 0.175 (58) COVID-19 0.121
SC 1.356 ± 1.744 (9) 0.892 ± 0.183 (12) 0.999 ± 0.479 (27) 1.039 ± 0.824 (48) Periodontitis 0.321
Total 0.994 ± 0.926 (32) 0.870 ± 0.175 (36) 0.989 ± 0.413 (38) 0.950 ± 0.572 (106)

COVID-19

x

Periodontitis

0.258
Average Creatinine (mg/dL) MC 0.918 ± 0.162 (23) 0.959 ± 0.178 (24) 1.071 ± 0.250 (11) 0.964 ± 0.192 (58) COVID-19 0.068
SC 1.565 ± 2.020 (9) 0.987 ± 0.153 (12) 1.230 ± 0.757 (27) 1.232 ± 1.026 (48) Periodontitis 0.330
Total 1.100 ± 1.076 (32) 0.968 ± 0.169 (36) 1.184 ± 0.652 (38) 1.085 ± 0.714 (106)

COVID-19

x

Periodontitis

0.274
Max Sodium (mEq/dL) MC 140.5 ± 3.0 (23) 141.6 ± 3.8 (24) 140.8 ± 2.9 (11) 141.0 ± 3.3 (58) COVID-19 0.009 *
SC 138.3 ± 3.8 (9) 140.3 ± 2.8 (12) 139.2 ± 3.6 (27) 139.3 ± 3.5 (48) Periodontitis 0.232
Total 139.9 ± 3.3 (32) 141.2 ± 3.5 (36) 139.7 ± 3.5 (38) 140.3 ± 3.5 (106)

COVID-19

x

Periodontitis

0.881
Min Sodium (mEq/dL) MC 137.8 ± 2.7 (23) 137.2 ± 4.9 (24) 136.4 ± 2.8 (11) 137.3 ± 3.7 (58) COVID-19  < 0.001 *
SC 133.2 ± 1.9 (9) 135.1 ± 4.1 (12) 134.1 ± 3.7 (27) 134.2 ± 3.6 (48) Periodontitis 0.536
Total 136.5 ± 3.2 (32) 136.5 ± 4.7 (36) 134.8 ± 3.6 (38) 135.9 ± 3.9 (106)

COVID-19

x

Periodontitis

0.494
Average Sodium (mEq/dL) MC 139.2 ± 2.1 (23) 139.5 ± 3.9 (24) 138.5 ± 2.0 (11) 139.2 ± 3.0 (58) COVID-19  < 0.001 *
SC 136.0 ± 2.4 (9) 137.7 ± 2.1 (12) 136.8 ± 3.0 (27) 136.9 ± 2.7 (48) Periodontitis 0.277
Total 138.3 ± 2.6 (32) 138.9 ± 3.5 (36) 137.3 ± 2.9 (38) 138.1 ± 3.1 (106)

COVID-19

x

Periodontitis

0.738
Max Potassium (mEq/dL) MC 4.25 ± 0.47 (23) 4.34 ± 0.52 (24) 4.38 ± 0.32 (11) 4.31 ± 0.46 (58) COVID-19 0.029 *
SC 4.64 ± 0.42 (9) 4.48 ± 0.36 (12) 4.49 ± 0.53 (27) 4.51 ± 0.47 (48) Periodontitis 0.487
Total 4.36 ± 0.48 (32) 4.39 ± 0.47 (36) 4.46 ± 0.48 (38) 4.40 ± 0.48 (106)

COVID-19

x

Periodontitis

0.695
Min Potassium (mEq/dL) MC 3.95 ± 0.50 (23) 3.75 ± 0.36 (24) 4.08 ± 0.46 (11) 3.89 ± 0.45 (58) COVID-19 0.066
SC 3.80 ± 0.32 (9) 3.73 ± 0.47 (12) 3.71 ± 0.46 (27) 3.73 ± 0.44 (48) Periodontitis 0.454
Total 3.91 ± 0.45 (32) 3.74 ± 0.39 (36) 3.82 ± 0.49 (38) 3.82 ± 0.45 (106)

COVID-19

x

Periodontitis

0.422
Average Potassium (mEq/dL) MC 4.10 ± 0.46 (23) 4.02 ± 0.39 (24) 4.22 ± 0.39 (11) 4.09 ± 0.42 (58) COVID-19 0.653
SC 4.22 ± 0.30 (9) 4.09 ± 0.30 (12) 4.11 ± 0.45 (27) 4.13 ± 0.39 (48) Periodontitis 0.501
Total 4.14 ± 0.42 (32) 4.05 ± 0.36 (36) 4.14 ± 0.43 (38) 4.11 ± 0.40 (106)

COVID-19

x

Periodontitis

0.801
Average Calcium (mg/dL) MC 8.50 ± 0.86 (9) 8.74 ± 0.84 (6) 7.90 ± 1.42 (4) 8.45 ± 0.98 (19) Number of missing data exceeding analysis threshold
SC 8.80 ± 0.85 (2) 7.90 ± 0.67 (6) 7.77 ± 0.77 (14) 7.90 ± 0.77 (22)
Total 8.55 ± 0.83 (11) 8.32 ± 0.85 (12) 7.80 ± 0.90 (18) 8.15 ± 0.91 (41)
Average Phosphorous (mg/dL) MC 3.34 ± 0.74 (8) 3.09 ± 0.81 (6) 3.00 ± 1.01 (3) 3.19 ± 0.77 (17) Number of missing data exceeding analysis threshold
SC 4.35 ± 1.91 (2) 3.76 ± 1.27 (5) 2.95 ± 1.12 (11) 3.33 ± 1.27 (18)
Total 3.54 ± 1.01 (10) 3.40 ± 1.05 (11) 2.96 ± 1.06 (14) 3.26 ± 1.04 (35)
Average Magnesium (mg/dL) MC 1.76 ± 0.12 (6) 1.98 ± 0.13 (5) 2.13 ± 0.32 (3) 1.92 ± 0.23 (14) Number of missing data exceeding analysis threshold
SC 2.45 ± 0.64 (2) 1.88 ± 0.30 (4) 2.09 ± 0.70 (8) 2.08 ± 0.59 (14)
Total 1.93 ± 0.41 (8) 1.94 ± 0.22 (9) 2.10 ± 0.61 (11) 2.00 ± 0.45 (28)
Liver and Enzymes (patients excluded = 4)
Max AST (IU/L) MC 60.7 ± 185.8 (26) 31.6 ± 19.6 (27) 39.5 ± 24.0 (11) 44.8 ± 118.9 (64) COVID-19 0.120
SC 101.3 ± 193.0 (10) 37.2 ± 36.5 (13) 274.8 ± 709.9 (30) 183.8 ± 547.0 (53) Periodontitis 0.131
Total 71.9 ± 186.0 (36) 33.4 ± 25.9 (40) 211.7 ± 613.7 (41) 107.7 ± 382.9 (117)

COVID-19

x

Periodontitis

0.660
Min AST (IU/L) MC 36.0 ± 65.3 (26) 24.5 ± 18.2 (27) 32.6 ± 21.2 (11) 30.6 ± 43.9 (64) COVID-19 0.284
SC 28.9 ± 14.3 (10) 26.7 ± 17.5 (13) 192.7 ± 681.6 (30) 121.1 ± 515.8 (53) Periodontitis 0.172
Total 34.0 ± 55.7 (36) 25.2 ± 17.8 (40) 149.8 ± 584.9 (41) 71.6 ± 349.8 (117)

COVID-19

x

Periodontitis

0.829
Average AST (IU/L) MC 50.1 ± 134.0 (26) 28.0 ± 17.8 (27) 36.1 ± 21.9 (11) 38.3 ± 86.2 (64) COVID-19 0.204
SC 55.1 ± 69.4 (10) 31.9 ± 23.1 (13) 226.8 ± 684.1 (30) 146.6 ± 520.2 (53) Periodontitis 0.155
Total 51.5 ± 118.6 (36) 29.2 ± 19.5 (40) 175.6 ± 588.8 (41) 87.4 ± 358.1 (117)

COVID-19

x

Periodontitis

0.748
Max ALT (IU/L) MC 53.3 ± 120.0 (26) 42.9 ± 33.9 (27) 43.1 ± 30.7 (11) 47.2 ± 79.8 (64) COVID-19 0.125
SC 108.3 ± 214.4 (10) 30.7 ± 21.8 (13) 211.8 ± 509.8 (30) 147.8 ± 398.9 (53) Periodontitis 0.158
Total 68.6 ± 150.8 (36) 38.9 ± 30.7 (40) 166.5 ± 440.9 (41) 92.8 ± 278.1 (117)

COVID-19

x

Periodontitis

0.566
Min ALT (IU/L) MC 43.2 ± 77.2 (26) 32.7 ± 28.9 (27) 32.0 ± 14.5 (11) 36.8 ± 52.6 (64) COVID-19 0.218
SC 58.9 ± 82.2 (10) 26.2 ± 14.9 (13) 155.1 ± 461.6 (30) 105.3 ± 351.3 (53) Periodontitis 0.319
Total 47.5 ± 77.7 (36) 30.5 ± 25.2 (40) 122.0 ± 396.9 (41) 67.8 ± 240.9 (117)

COVID-19

x

Periodontitis

0.731
Average ALT (IU/L) MC 48.6 ± 100.7 (26) 37.4 ± 29.6 (27) 36.6 ± 19.9 (11) 41.8 ± 66.9 (64) COVID-19 0.171
SC 77.8 ± 128.5 (10) 28.4 ± 17.9 (13) 173.7 ± 469.6 (30) 120.0 ± 360.6 (53) Periodontitis 0.203
Total 56.7 ± 108.0 (36) 34.5 ± 26.5 (40) 137.0 ± 404.7 (41) 77.2 ± 249.5 (117)

COVID-19

x

Periodontitis

0.666
Max Alkaline Phosphatase (IU/L) MC 200.6 ± 51.4 (26) 242.3 ± 116.1 (27) 216.9 ± 163.3 (11) 221.0 ± 105.9 (64) COVID-19 0.255
SC 260.0 ± 239.5 (10) 248.5 ± 141.7 (13) 254.9 ± 136.7 (30) 254.3 ± 158.1 (53) Periodontitis 0.846
Total 217.1 ± 131.8 (36) 244.3 ± 123.2 (40) 244.7 ± 143.2 (41) 236.1 ± 132.6 (117)

COVID-19

x

Periodontitis

0.735
Min Alkaline Phosphatase (IU/L) MC 196.4 ± 54.6 (26) 230.9 ± 122.5 (27) 205.4 ± 162.9 (11) 212.5 ± 108.9 (64) COVID-19 0.455
SC 239.2 ± 244.8 (10) 241.0 ± 147.8 (13) 219.0 ± 112.2 (30) 228.2 ± 150.2 (53) Periodontitis 0.642
Total 208.3 ± 133.8 (36) 234.2 ± 129.4 (40) 215.4 ± 125.7 (41) 219.6 ± 128.9 (117)

COVID-19

x

Periodontitis

0.907
Average Alkaline Phosphatase (IU/L) MC 198.6 ± 52.4 (26) 236.8 ± 118.5 (27) 211.1 ± 162.5 (11) 216.9 ± 106.8 (64) COVID-19 0.342
SC 250.1 ± 241.7 (10) 243.9 ± 145.3 (13) 237.0 ± 118.3 (30) 241.1 ± 151.0 (53) Periodontitis 0.751
Total 212.9 ± 132.4 (36) 239.1 ± 126.0 (40) 230.0 ± 129.9 (41) 227.9 ± 128.7 (117)

COVID-19

x

Periodontitis

0.825
Average Albumin (g/dL) MC 3.52 ± 0.54 (7) 3.60 ± 0.88 (6) 3.35 ± 0.35 (2) 3.53 ± 0.65 (15) Number of missing data exceeding analysis threshold
SC 3.13 ± 0.33 (4) 3.21 ± 0.30 (7) 2.79 ± 0.58 (14) 2.96 ± 0.50 (25)
Total 3.38 ± 0.50 (11) 3.39 ± 0.64 (13) 2.86 ± 0.58 (16) 3.18 ± 0.62 (40)
Average Direct Bilirubin (mg/dL) MC 0.367 ± 0.306 (3) 0.285 ± 0.158 (8) 0.280 ± 0.179 (5) 0.299 ± 0.184 (16) Number of missing data exceeding analysis threshold
SC 0.167 ± 0.058 (3) 0.680 ± 0.726 (3) 0.423 ± 0.323 (6) 0.423 ± 0.424 (13)
Total 0.267 ± 0.225 (6) 0.393 ± 0.396 (11) 0.358 ± 0.265 (11) 0.352 ± 0.310 (28)
Average Total Bilirubin (mg/dL) MC 0.717 ± 0.340 (3) 0.612 ± 0.256 (8) 0.660 ± 0.527 (5) 0.647 ± 0.349 (16) Number of missing data exceeding analysis threshold
SC 0.467 ± 0.115 (3) 1.320 ± 1.316 (3) 1.102 ± 0.863 (6) 0.998 ± 0.876 (13)
Total 0.592 ± 0.265 (6) 0.592 ± 0.265 (11) 0.901 ± 0.733 (11) 0.797 ± 0.642 (28)
Markers
Max LDH (IU/L) MC 593.8 ± 526.7 (26) 442.5 ± 209.1 (24) 442.8 ± 211.3 (11) 507.0 ± 381.4 (61) COVID-19 0.003 *
SC 938.4 ± 785.0 (10) 701.4 ± 327.9 (13) 689.3 ± 475.2 (29) 740.2 ± 517.3 (52) Periodontitis 0.239
Total 689.5 ± 617.4 (36) 533.5 ± 281.9 (37) 621.5 ± 431.3 (40) 614.3 ± 462.0 (113)

COVID-19

x

Periodontitis

0.826
Min LDH (IU/L) MC 571.1 ± 537.4 (26) 401.1 ± 190.5 (24) 433.7 ± 209.3 (11) 479.4 ± 384.7 (61) COVID-19 0.035 *
SC 695.1 ± 555.5 (10) 594.0 ± 215.8 (13) 629.2 ± 456.1 (29) 633.1 ± 425.2 (52) Periodontitis 0.550
Total 605.5 ± 537.4 (36) 468.9 ± 217.8 (37) 575.5 ± 410.3 (40) 550.1 ± 409.3 (113)

COVID-19

x

Periodontitis

0.951
Average LDH (IU/L) MC 583.6 ± 530.6 (26) 422.3 ± 196.2 (24) 438.3 ± 209.8 (11) 493.9 ± 381.5 (61) COVID-19 0.010 *
SC 812.0 ± 636.8 (10) 639.6 ± 224.1 (13) 657.3 ± 461.8 (29) 682.6 ± 452.3 (52) Periodontitis 0.350
Total 647.1 ± 562.2 (36) 498.6 ± 228.9 (37) 597.1 ± 417.4 (40) 580.8 ± 424.3 (113)

COVID-19

x

Periodontitis

0.985
Max CK-MB (IU/L) MC 85.5 ± 162.9 (14) 25.4 ± 18.3 (15) 26.3 ± 7.6 (7) 48.9 ± 104.3 (36) Number of missing data exceeding analysis threshold
SC 24.5 ± 17.7 (2) 24.4 ± 14.2 (10) 182.0 ± 730.1 (22) 126.4 ± 587.4 (34)
Total 77.8 ± 153.2 (16) 25.0 ± 16.5 (25) 144.4 ± 635.9 (29) 86.5 ± 414.8 (70)

*Statistically significant

aAll analyses adjusted for age, sex, and comorbidities

b“COVID-19” and “Periodontitis” are main effects; “COVID-19 × Periodontitis” is the interaction