Table 1.
| Baseline Characteristics Before and After Propensity-Score Matching
| Characteristics | All Cases (n=1737) |
Unmatched Cohort | After Propensity Score Matching | ||||
|---|---|---|---|---|---|---|---|
| WND (n=1101) |
ND (n= 636) |
P value (WND vs ND) |
WND (n= 581) |
ND (n= 581) |
P value (WND vs ND) |
||
| Age, years | 67 (55,77) | 66(54,74) | 68 (56,77) | 0.002 | 68 (57,76) | 67 (55,76) | 0.43 |
| Gender | |||||||
| Male | 1216 (70.0%) | 759 (68.9%) | 457 (71.9%) | 0.211 | 412 (70.9%) | 415 (71.4%) | 0.85 |
| Female | 521 (30.0%) | 342 (31.1%) | 179 (28.1%) | 0.211 | 169 (29.1%) | 166 (28.6%) | 0.85 |
| Pneumonia type | |||||||
| CAP | 1051 (60.5%) | 675 (61.3%) | 376 (59.1%) | <0.001 | 351 (60.4%) | 349 (60.1%) | 0.41 |
| HAP | 419 (24.1%) | 285 (25.9%) | 134 (21.1%) | 136 (23.4%) | 123 (21.2%) | ||
| VAP | 267 (15.4%) | 141 (12.8%) | 126 (19.8%) | 94 (16.2%) | 109 (18.8%) | ||
| ngs_to_intime | 3 (2,7) | 3 (2,6) | 4 (2,8) | 0.016 | 3 (2,7) | 3 (2,8) | 0.095 |
| Ventilator mode | |||||||
| IMV | 1510 (86.9%) | 930 (84.4%) | 580 (91.2%) | <0.001 | 53 1 (91.4%) | 525 (90.4%) | 0.49 |
| NIV | 52 (3.0%) | 37 (3.3%) | 15 (2.4%) | 18 (3.1%) | 15 (2.6%) | ||
| Other | 175 (10.1%) | 134 (12.1%) | 41 (6.4%) | 32 (5.5%) | 41 (7.1%) | ||
| Comorbidities | |||||||
| Any | 1220 (70.2%) | 795 (72.2%) | 425 (66.8%) | 0.019 | 412 (67.9%) | 407 (67.1%) | 0.76 |
| Immunosuppression | 430 (24.7%) | 330 (29.9%) | 100 (15.7%) | <0.001 | 112 (19.3%) | 99 (17.0%) | 0.32 |
| Diabetes | 427 (24.5%) | 260 (23.6%) | 167 (26.2%) | 0.225 | 148 (25.5%) | 145 (25.0%) | 0.84 |
| MI | 103 (5.9%) | 71 (6.4%) | 32 (5.0%) | 0.247 | 37 (6.4%) | 32 (5.5%) | 0.53 |
| CPD | 350 (24.1%) | 243 (22.0%) | 107 (16.8%) | 0.009 | 112 (19.3%) | 104 (17.9%) | 0.55 |
| Liver disease | 118 (6.7%) | 82 (7.4%) | 36 (5.6%) | 0.166 | 32 (5.5%) | 35 (6.0%) | 0.71 |
| CKD | 219 (12.6%) | 142 (12.8%) | 77 (12.1%) | 0.653 | 69 (11.9%) | 70 (12.1%) | 0.93 |
| Solid_tumor | 261 (15.0%) | 177 (16.0%) | 84 (13.2%) | 0.109 | 88 (15.2%) | 81 (13.9%) | 0.56 |
| HM | 91 (5.2%) | 71 (6.4%) | 20 (3.1%) | 0.003 | 21 (3.6%) | 20 (3.4%) | 0.87 |
| CTD | 74 (4.2%) | 55 (4.9%) | 19 (2.9%) | 0.049 | 18 (3.1%) | 19 (3.3%) | 0.87 |
| Transplantation | 88 (5.0%) | 72 (6.5%) | 16 (2.5%) | 0.000 | 14 (2.4%) | 16 (2.8%) | 0.71 |
| CBD | 279 (16.0%) | 141 (12.8%) | 138 (21.6%) | 0.000 | 110 (18.9%) | 98 (16.9%) | 0.36 |
Abbreviations: CAP, Community-Acquired Pneumonia; HAP, Nosocomial pneumonia; VAP, Ventilator-associated pneumonia; IMV, Invasive mechanical ventilation; NIV, Non-Invasive Ventilation; MI, Myocardial Infarction; CPD Chronic pulmonary disease; CKD, Chronic kidney disease; HM Hematological Malignances; CTD, Connective tissue disease; CBD, Cerebrovascular disease.