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Table 3 Comparison of non-ICU and ICU patients according to three different diagnoses

From: Epidemiology of mechanically ventilated patients treated in ICU and non-ICU settings in Japan: a retrospective database study

  Heart failure Sepsis Aspiration pneumonia
Non-ICU   ICU   P Non-ICU   ICU   P Non-ICU   ICU   P
Number of patients 2489   2524    506   928    1005   691   
Age 76.6   75.9   0.037 74.0   72.9   0.134 79.8   75.5   < 0.001
Male 1341 53.9% 1477 58.5% 0.001 302 59.7% 565 60.9% 0.692 626 62.3% 428 61.9% 0.919
Emergency admission 2119 85.1% 2409 95.4% < 0.001 445 87.9% 854 92.0% 0.014 904 90.0% 660 95.5% < 0.001
Hospital stay, days 26.9   26.5   < 0.001 26.5   26.6   0.978 27.8   26.3   0.061
Number of days of ventilation 11.0   8.3   < 0.001 11.6   11.3   0.658 12.3   10.6   0.001
In-hospital deaths 608 24.4% 556 22.0% 0.045 343 67.8% 546 58.8% 0.001 542 53.9% 253 36.6% < 0.001
Treatments
 Arterial line 300 12.1% 1226 48.6% < 0.001 188 37.2% 721 77.7% < 0.001 61 6.1% 295 42.7% < 0.001
 Central venous catheter 796 32.0% 1293 51.2% < 0.001 421 83.2% 852 91.8% < 0.001 460 45.8% 347 50.2% 0.75
 Catecholamines 1115 44.8% 1547 61.3% < 0.001 431 85.2% 858 92.5% < 0.001 506 50.3% 370 53.5% 0.199
 Renal replacement therapy 162 6.5% 323 12.8% < 0.001 171 33.8% 436 47.0% < 0.001 24 2.4% 25 3.6% 0.143
 Sedation 715 28.7% 1361 53.9% < 0.001 350 69.2% 756 81.5% < 0.001 416 41.4% 446 64.5% < 0.001
 Opioids 207 8.3% 514 20.4% < 0.001 135 26.7% 394 42.5% < 0.001 42 4.2% 118 17.1% < 0.001
 Muscle relaxant 96 3.9% 383 15.2% < 0.001 159 31.4% 380 40.9% < 0.001 58 5.8% 137 19.8% < 0.001
 Enteral nutrition 244 9.8% 683 27.1% < 0.001 149 29.4% 534 57.5% < 0.001 334 33.2% 372 53.8% < 0.001
 Mechanical ventilation without stress ulcer prevention (≥ 3 days) 1785 71.7% 1352 53.6% < 0.001 233 46.0% 328 35.3% < 0.001 671 66.8% 364 52.7% < 0.001