Retrospective Study
Copyright ©The Author(s) 2025.
World J Crit Care Med. Mar 9, 2025; 14(1): 100486
Published online Mar 9, 2025. doi: 10.5492/wjccm.v14.i1.100486
Table 1 Demographic and clinical data according to D-dimer level, n (%)

Total (n = 3004)
Normal D-dimer level (n = 1027)
Abnormal D-dimer level (n = 1977)
P value
Gender< 0.001
Female1605 (53.43)504 (49.1)1101 (55.7)
Age (year)< 0.001
Mean (SD)50.17 (16.92)47.19 (15.53)51.72 (17.40)
Median (interquartile range)48.00 (24.00)45.00 (21.00)51.00 (26.00)
Quartile 1, quartile 338.00, 62.0037.00, 58.0038.00, 64.00
Minimum, maximum2.00, 101.002.00, 99.002.00, 101.00
Year< 0.001
2020612 (20.37)222 (21.62)390 (19.73)
2021523 (17.41)143 (13.92)380 (19.22)
2022482 (16.05)147 (14.31)335 (16.94)
20231387 (46.17)515 (50.15)872 (44.11)
Severity of coronavirus disease 2019


< 0.001
Severe1425 (47.44)294 (28.63)1131 (57.21)
Table 2 Logistics regression of factors associated with severity of coronavirus disease 2019

Univariable OR (95%CI)
P value
Multivariable OR (95%CI)
P value
Gender
Female vs male0.74 (0.64-0.85)< 0.0010.70 (0.60-0.82)< 0.001
Age (year)1.01 (1.01-1.02)< 0.0011.01 (1.01-1.01)< 0.001
Year
2021 vs 20200.25 (0.19-0.32)< 0.0010.18 (0.14-0.24)< 0.001
2022 vs 20200.29 (0.22-0.37)< 0.0010.24 (0.18-0.31)< 0.001
2023 vs 20200.22 (0.18-0.27)< 0.0010.19 (0.15-0.24)< 0.001
Abnormal D-dimer level
D-dimer level vs normal D-dimer level3.33 (2.84-3.92)< 0.0013.89 (3.27-4.66)< 0.001