Table 2 Subgroup comparison of 7-day estimated mortality obtained using RL-oxygen algorithm and critical care physician decision guidance
From: Reinforcement learning assisted oxygen therapy for COVID-19 patients under intensive care
Subgroups | Estimated mortality (%) | Average oxygen (L/min) | ||
|---|---|---|---|---|
RL-oxygen | Physician | RL-oxygen | Physician | |
Overall | 5.37 (0.22) | 7.94 (0.27) | 19.24 (0.07)* | 20.52 (0.07) |
Male | 6.13 (0.12)* | 8.53 (0.14) | 21.20 (0.09)* | 22.66 (0.09) |
Female | 2.18 (0.11)* | 2.99 (0.12) | 6.33 (0.07) | 6.41 (0.07) |
Age | ||||
50–65 | 1.19 (0.08)* | 1.74 (0.09) | 25.54 (0.12)* | 22.27 (0.12) |
65–75 | 4.13 (0.14)* | 5.43 (0.16) | 19.63 (0.12)* | 22.73 (0.12) |
75–80 | 14.76 (0.3)* | 20.39 (0.34) | 19.79 (0.14)* | 21.45 (0.16) |
≥ 80 | 15.86 (0.57)* | 21.73 (0.65) | 14.28 (0.18)* | 18.96 (0.26) |
Body mass index (kg/m2) | ||||
< 25 | 7.74 (0.18)* | 11.10 (0.21) | 19.27 (0.11)* | 20.58 (0.12) |
25–30 | 7.38 (0.19)* | 9.21 (0.21) | 23.39 (0.13)* | 24.5 (0.14) |
30–35 | 2.72 (0.15)* | 5.30 (0.21) | 22.91 (0.16)* | 21.42 (0.17) |
≥ 35 | 5.35 (0.28)* | 5.44 (0.28) | 19.53 (0.18)* | 22.78 (0.21) |
Hyperlipidemia | 7.43 (0.13)* | 9.47 (0.14) | 20.11 (0.09)* | 20.94 (0.09) |
Coronary artery disease | 8.55 (0.18)* | 11.39 (0.21) | 18.13 (0.12)* | 20.04 (0.11) |
Heart failure | 11.25 (0.23)* | 12.59 (0.25) | 18.35 (0.11) | 18.22 (0.13) |
Hypertension | 6.96 (0.11)* | 8.79 (0.13) | 21.2 (0.08) | 21.25 (0.08) |
Diabetes | 7.73 (0.15)* | 8.25 (0.15) | 25.22 (0.11)* | 20.31 (0.1) |
Asthma or chronic obstructive pulmonary | 11.98 (0.32)* | 17.67 (0.38) | 15.57 (0.15)* | 19.68 (0.18) |
Dementia | 10.71 (0.46)* | 15.82 (0.56) | 15.57 (0.23)* | 14.19 (0.23) |
Stroke | 9.15 (0.31)* | 12.95 (0.37) | 21.78 (0.15)* | 15.94 (0.19) |