Table 3 Imbalance of patient characteristics before and after propensity score matching in the assessment of 30-day mortality
Item n | Unmatched | SMD | Matched | SMD | ||||
|---|---|---|---|---|---|---|---|---|
Non-statins | Statins | SMD | − 0.1 | Non-statins | Statins | SMD | − 0.1 | |
1241 | 1484 | 882 | 882 | |||||
Age (year) | 69.46 (11.77) | 73.12 (9.80) | 0.338 | > 0.1 | 71.83 (11.33) | 71.76 (9.87) | 0.006 | < 0.1 |
SBP (mmHg) | 116.61 (15.63) | 117.41 (16.35) | 0.05 | < 0.1 | 117.40 (15.67) | 117.50 (16.32) | 0.006 | < 0.1 |
DBP(mmHg) | 63.14 (10.99) | 60.91 (10.59) | 0.207 | > 0.1 | 62.43 (10.97) | 62.24 (10.85) | 0.017 | < 0.1 |
HR (beats/min) | 87.74 (16.36) | 84.37 (14.75) | 0.216 | > 0.1 | 86.25 (16.04) | 85.81 (15.29) | 0.028 | < 0.1 |
RR (beats/min) | 19.91 (3.87) | 19.76 (3.48) | 0.041 | < 0.1 | 19.75 (3.67) | 19.90 (3.54) | 0.042 | < 0.1 |
SpO2 (%) | 96.16 (2.34) | 96.18 (2.20) | 0.008 | < 0.1 | 96.18 (2.20) | 96.15 (2.18) | 0.013 | < 0.1 |
CHF | 422 (34.0) | 794 (53.5) | 0.401 | > 0.1 | 374 (42.4) | 377 (42.7) | 0.007 | < 0.1 |
Asthma | 55 ( 4.4) | 59 ( 4.0) | 0.023 | < 0.1 | 36 ( 4.1) | 46 (5.2) | 0.054 | < 0.1 |
Diabetes | 315 (25.4) | 623 (42.0) | 0.357 | > 0.1 | 273 (31.0) | 281 (31.9) | 0.02 | < 0.1 |
Liver disease | 219 (17.6) | 95 ( 6.4) | 0.351 | > 0.1 | 74 ( 8.4) | 86 (9.8) | 0.047 | < 0.1 |
Renal disease | 215 (17.3) | 477 (32.1) | 0.349 | > 0.1 | 193 (21.9) | 190 (21.5) | 0.008 | < 0.1 |
Malignant cancer | 255 (20.5) | 191 (12.9) | 0.207 | > 0.1 | 158 (17.9) | 143 (16.2) | 0.045 | < 0.1 |
HGB(g/L) | 11.46 (2.26) | 11.26 (2.10) | 0.094 | < 0.1 | 11.37 (2.21) | 11.47 (2.14) | 0.046 | < 0.1 |
WBC(10^9/L) | 15.01 (14.11) | 14.51 (7.95) | 0.043 | < 0.1 | 14.74 (10.07) | 15.03 (8.22) | 0.032 | < 0.1 |
Glucose (mg/dl) | 169.56 (96.72) | 177.37 (104.89) | 0.077 | < 0.1 | 170.17 (100.76) | 172.59 (99.14) | 0.024 | < 0.1 |
Sodium (mmol/L) | 139.55 (5.27) | 139.73 (4.64) | 0.036 | < 0.1 | 139.64 (5.04) | 139.64 (4.51) | < 0.001 | < 0.1 |
Potassium (mmol/L) | 4.68 (0.90) | 4.70 (0.83) | 0.023 | < 0.1 | 4.67 (0.89) | 4.69 (0.80) | 0.017 | < 0.1 |
Anion gap (mmol/L) | 16.50 (4.65) | 16.26 (4.35) | 0.054 | < 0.1 | 16.16 (4.29) | 16.22 (4.35) | 0.014 | < 0.1 |
Glucocorticoid | 483 (38.9) | 485 (32.7) | 0.13 | > 0.1 | 330 (37.4) | 321 (36.4) | 0.021 | < 0.1 |
Antibiotic | 1073 (86.5) | 1207 (81.3) | 0.14 | > 0.1 | 741 (84.0) | 742 (84.1) | 0.003 | < 0.1 |
Vasopressin | 114 (9.2) | 170 (11.5) | 0.075 | < 0.1 | 89 (10.1) | 82 (9.3) | 0.027 | < 0.1 |
Epinephrine | 56 (4.5) | 74 (5.0) | 0.022 | < 0.1 | 44 (5.0) | 43 (4.9) | 0.005 | < 0.1 |
Norepinephrine | 238 (19.2) | 337 (22.7) | 0.087 | < 0.1 | 181 (20.5) | 171 (19.4) | 0.028 | < 0.1 |
ACEI.ARB | 122 (9.8) | 294 (19.8) | 0.284 | > 0.1 | 109 (12.4) | 119 (13.5) | 0.034 | < 0.1 |
β-blocker | 545 (43.9) | 892 (60.1) | 0.328 | > 0.1 | 462 (52.4) | 464 (52.6) | 0.005 | < 0.1 |
CCI | 6.98 (2.62) | 7.82 (2.47) | 0.33 | > 0.1 | 7.28 (2.65) | 7.28 (2.47) | < 0.001 | < 0.1 |
SAPII | 40.39 (14.03) | 39.28 (11.58) | 0.087 | < 0.1 | 39.57 (12.52) | 39.78 (12.46) | 0.017 | < 0.1 |
OASIS | 35.51 (9.39) | 33.29 (8.46) | 0.249 | > 0.1 | 34.46 (8.84) | 34.48 (8.79) | 0.002 | < 0.1 |
Los-ICU | 6.01 (6.45) | 5.10 (5.45) | 0.152 | > 0.1 | 5.48 (5.85) | 5.42 (5.69) | 0.01 | < 0.1 |