Comparisons of area under curves (AUCs) between patients with length of hospital stay (LOS) ≤6 and >6 days, respectively, based on two-sample t-test
| Parameters and thresholds | LOS ≤6 days (n=61) | LOS >6 days (n=41) | P value | ||
| AUC >0 (n) | AUC median (Q1–Q3) (unit*min) | AUC >0 (n) | AUC median (Q1–Q3) (unit*min) | ||
| MAP <50 mm Hg | 14 | 11 (5–25) | 23 | 26 (9–53) | 0.4 |
| MAP <60 mm Hg | 29 | 15 (4–36) | 32 | 43 (23–144) | 0.2 |
| MAP <70 mm Hg | 44 | 83 (34–227) | 41 | 291 (130–441) | 0.06 |
| MAP >100 mm Hg | 51 | 200 (42–517) | 39 | 324 (100–656) | 0.2 |
| MAP >110 mm Hg | 41 | 123 (56–265) | 36 | 154 (82–501) | 0.08 |
| MAP >120 mm Hg | 36 | 82 (29–171) | 33 | 113 (52–338) | 0.047 |
| Temp <35°C | 22 | 43 (6–94) | 22 | 34 (16–46) | 0.5 |
| Temp <35.5°C | 40 | 51 (9–144) | 30 | 63 (17–129) | 0.3 |
| Temp <36°C | 50 | 106 (42–184) | 35 | 118 (55–245) | 0.2 |
| Temp >37°C | 14 | 17 (6–31) | 15 | 37 (6–54) | 0.6 |
| Temp >37.5°C | 4 | 21 (9–32) | 4 | 4 (2–5) | 0.05 |
| Temp >38°C | 1 | NA | 0 | NA | NA |
| SpO2 <90% | 5 | 8 (2–53) | 5 | 32 (32–928) | 0.3 |
| SpO2 <95% | 7 | 16 (2–94) | 9 | 41 (1–45) | 0.3 |
| HR <40 bpm | 0 | NA | 2 | 1452 (1–2904) | NA |
| HR <50 bpm | 15 | 35 (1–100) | 9 | 21 (11–518) | 0.2 |
| HR <60 bpm | 35 | 211 (32–1107) | 18 | 313 (22–1180) | 0.5 |
| HR >90 bpm | 9 | 128 (18–264) | 14 | 351 (210–508) | 0.2 |
| HR >100 bpm | 7 | 90 (7–189) | 11 | 142 (39–164) | 0.3 |
| HR >110 bpm | 6 | 49 (15–58) | 8 | 36 (8–65) | 0.8 |
| PI <0.5 | 19 | 6 (1–10) | 21 | 4 (0.3–23) | 0.6 |
| PI <1 | 38 | 14 (3–76) | 27 | 40 (8–130) | 0.1 |
| PI >6 | 14 | 5 (0.3–35) | 11 | 3 (1–22) | 0.1 |
| PI >10 | 3 | 97 (0.2–217) | 0 | NA | NA |
| iVt <5 mL/kg | 61 | 421 (340–552) | 40 | 566 (443–816) | 0.0001 |
| iVt <6 mL/kg | 61 | 666 (535–904) | 40 | 868 (732–1241) | 0.0003 |
| iVt >8 mL/kg | 0 | NA | 1 | NA | NA |
| iVt >9 mL/kg | 0 | NA | 1 | NA | NA |
| iVt >10 mL/kg | 0 | NA | 0 | NA | NA |
| aVt <5 mL/kg | 45 | 8 (3–44) | 34 | 11 (5–72) | 0.4 |
| aVt <6 mL/kg | 55 | 98 (8–213) | 39 | 116 (15–335) | 0.3 |
| aVt >8 mL/kg | 18 | 1 (1–3) | 14 | 3 (1–24) | 0.2 |
| aVt >9 mL/kg | 10 | 1 (0.3–4) | 9 | 0.1 (0.04–7) | 0.3 |
| aVt >10 mL/kg | 8 | 0.07 (0.03–4) | 3 | 53 (2–59) | 0.01 |
| Ppeak <10 cmH2O | 27 | 5 (1–10) | 19 | 8 (3–14) | 0.3 |
| Ppeak <15 cmH2O | 39 | 17 (5–55) | 29 | 19 (7–152) | 0.2 |
| Ppeak >25 cmH2O | 20 | 12 (2–161) | 12 | 28 (3–177) | 0.5 |
| Ppeak >30 cmH2O | 8 | 10 (2–51) | 4 | 71 (23–106) | 0.8 |
| Ppeak >35 cmH2O | 1 | NA | 3 | 8 (2–18) | 0.3 |
| PEEP <3 cmH2O | 32 | 5 (2–74) | 21 | 3 (1–9) | 0.6 |
| PEEP >7 cmH2O | 11 | 5 (1–59) | 6 | 31 (12–295) | 0.1 |
| PEEP >10 cmH2O | 3 | 9 (0.1–31) | 3 | 2 (1–3) | 0.3 |
| EtCO2 >25 mm Hg | 22 | 16 (7–36) | 17 | 11 (8–27) | 0.5 |
| EtCO2 >30 mm Hg | 34 | 21 (5–29) | 28 | 25 (12–57) | 0.3 |
| EtCO2 >40 mm Hg | 39 | 50 (10–212) | 24 | 81 (13–349) | 0.9 |
| EtCO2 >45 mm Hg | 21 | 12 (3–153) | 13 | 52 (18–138) | 0.6 |
| FiO2 <0.35 | 3 | 4 (0.2–245) | 3 | 1524 (11–2532) | 0.2 |
| FiO2 <0.45 | 13 | 78 (60–157) | 8 | 52 (12–1674) | 0.1 |
| FiO2 >0.75 | 57 | 1189 (242–3539) | 39 | 1715 (672–4212) | 0.8 |
| FiO2 >0.85 | 52 | 460 (89–2206) | 34 | 706 (411–2431) | 0.8 |
| SctO2 <50% | 1 | NA | 5 | 74 (74–213) | 0.7 |
| SctO2 <55% | 4 | 26 (6–260) | 9 | 32 (16–232) | 0.5 |
| SctO2 <60% | 11 | 161 (28–246) | 16 | 69 (20–492) | 0.5 |
| SctO2 >75% | 45 | 92 (7–235) | 23 | 202 (46–505) | 0.1 |
| SctO2 >80% | 24 | 19 (6–46) | 13 | 11 (2–88) | 0.3 |
| SctO2 >85% | 4 | 21 (6–36) | 4 | 59 (13–140) | 0.2 |
| SctO2 >90% | 0 | NA | 2 | 3 (2–5) | NA |
| SstO2 <50% | 8 | 59 (1–2632) | 8 | 90 (12–1186) | 0.4 |
| SstO2 <55% | 11 | 130 (29–2328) | 11 | 23 (16–1682) | 0.4 |
| SstO2 <60% | 15 | 213 (54–1388) | 17 | 41 (18–675) | 0.3 |
| SstO2 >75% | 50 | 926 (198–1903) | 37 | 1130 (343–2297) | 0.7 |
| SstO2 >80% | 40 | 337 (95–971) | 31 | 595 (97–1071) | 0.5 |
| SstO2 >85% | 23 | 109 (11–463) | 22 | 191 (20–478) | 0.7 |
| SstO2 >90% | 5 | 4 (1–5) | 4 | 25 (15–65) | 0.1 |
Only patients whose AUCs were >0 were included in analysis.
NA, not assessable; Q1, first quantile; Q3, third quantile.