Table 3.
Laboratory tests upon admission between groups before and after propensity score matching
| All cohort | Propensity score matched cohort | |||||||
|---|---|---|---|---|---|---|---|---|
| ASA | No ASA | Mean difference | p value | ASA | No ASA | Mean difference | p value | |
| PaO2/FiO2, median [IQR] | 290.7 [235–347.6] | 300 [242.9–358.5] | − 9.3 | < 0.001 | 290.7 [235–347.6] | 289.5 [233–347.2] | + 1.2 | 0.595 |
| Lymphocytes × 106/l, median [IQR] | 900 [600–1232] | 950 [690–1300] | − 50 | < 0.001 | 900 [600–1232] | 900 [610–1280] | 0 | 0.195 |
| CRP mg/l, median [IQR] | 72 [27.7–139] | 64 [21.5–130] | + 8 | < 0.001 | 72 [27.7–139] | 69.2 [23.8–138] | + 2.8 | 0.151 |
| LDH U/l, median [IQR] | 335 [251–463] | 325 [248–440.9] | + 10 | 0.005 | 335 [251–463] | 331 [248.5–454] | + 4 | 0.602 |
| Ferritin mcg/l, median [IQR] | 630 [222–1328.1] | 751.1 [273.5–1450.2] | − 121.1 | < 0.001 | 630 [222–1328.1] | 653.8 [221.5–1331.8] | − 23.8 | 0.883 |
| Ddimer ng/ml, median [IQR] | 920 [454–2200] | 631 [315–1400] | + 289 | < 0.001 | 920 [454–2200] | 846 [411–2072] | + 74 | 0.034 |
| Hemoglobin g/dl, median [IQR] | 13.2 [11.9–14.6] | 13.9 [12.7–15] | − 0.7 | < 0.001 | 13.2 [11.9–14.6] | 13.3 [12–14.6] | − 0.1 | 0.077 |
| Platelets × 109/l, median [IQR] | 184 [142–246] | 192 [149–250] | − 8 | < 0.001 | 184 [142–246] | 187 [145–244] | − 3 | 0.332 |
| Creatinine mg/dl, median [IQR] | 1.06 [0.82–1.45] | 0.9 [0.72–1.13] | + 0.7 | < 0.001 | 1.06 [0.82–1.45] | 1.03 [0.81–1.45] | + 0.3 | 0.179 |
| Albumin g/dl, median [IQR] | 3.6 [3.17–4] | 3.7 [3.3–4.1] | − 0.1 | < 0.001 | 3.6 [3.2–4] | 3.6 [3.2–3.9] | 0 | 0.676 |
| ALT U/l, median [IQR] | 26 [17–42] | 30 [19–49] | − 4 | < 0.001 | 26 [17–42] | 26 [17–42] | 0 | 0.568 |
ASA Acetylsalicylic acid, ALT alanine transferase. CRP C-reactive protein, LDH lactate dehydrogenase, IQR interquartile range