Supplementary Table 1.
Sensitivity Analyses of Incidence Rates and Incidence Rate Ratios for In-Hospital Death excluding 152 Patients Who Were Transferred to Other Departments or Hospitals
| Admission Date | Death (%) | Model 1, IR, % (95% CI) | Model 2, IR, % (95% CI) | Model 1, IRR (95% CI) | Model 2, IRR (95% CI) | Model 3, IRR (95% CI) |
|---|---|---|---|---|---|---|
| March (n = 173) | 54 (31.2) | 31.0 (0.216, 0.338) | 29.7 (0.209, 0.331) | Ref | Ref | Ref |
| April (n = 669) | 129 (19.3) | 19.6 (0.153, 0.207) | 18.8 (0.146, 0.196) | 0.62 (0.45, 0.85)∗ | 0.68 (0.49, 0.95)† | 0.69 (0.49, 0.97)† |
| May (n = 486) | 52 (10.7) | 10.5 (0.073, 0.122) | 10.5 (0.076, 0.121) | 0.30 (0.21, 0.45)‡ | 0.36 (0.24, 0.53)‡ | 0.37 (0.25, 0.56)‡ |
| June (n = 244) | 21 (8.6) | 8.7 (0.046, 0.108) | 8.3 (0.049, 0.104) | 0.24 (0.15, 0.41)‡ | 0.31 (0.18, 0.52)‡ | 0.32 (0.19, 0.55)‡ |
| July (n = 61) | 2 (3.3) | 3.6 (0.000, 0.080) | 2.0 (0.012, 0.026) | 0.11 (0.03, 0.46)∗ | 0.14 (0.03, 0.57)∗ | 0.14 (0.04, 0.59)∗ |
| P trend | <.001 |
Ref, referent.
Incidence rate (IR).
Model 1 standardized by age and sex.
Model 2 standardized by age and sex and vital signs [temperature, systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse rate, and saturation].
Incidence rate ratio (IRR): each admission month vs March.
Model 1 adjusted for age and sex and hospital.
Model 2 adjusted for age and sex and vital signs (temperature, SBP, DBP, pulse rate, and saturation) and hospital.
Model 3 adjusted for age and sex and vital signs (temperature, SBP, DBP, pulse rate and saturation), and medications [use of angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blockers (ARBs), β-blocking agents, calcium channel blockers, diuretics, statins, low-molecular-weight heparin, non–vitamin K antagonist oral anticoagulants, warfarin, antiplatelets, nonsteroidal anti-inflammatory drugs, glucocorticoids, and antibiotics] and hospital.
P < .01.
P < .05.
P < .001.