Table 5.
Multivariate logistic regression analysis of difficult-to-transport cases among all patients (pediatric patients, pregnant women, elderly patients, and vulnerable population as a variable).
| Pediatric Patients as a Variable | |||||
|---|---|---|---|---|---|
| Odds Ratio | 95%CI | p-Value | |||
| Year | |||||
| 2019 | Reference | ||||
| 2021 | 1.39 | 1.37 | – | 1.40 | <0.001 |
| Female (compared with male) | 0.91 | 0.89 | – | 0.93 | <0.001 |
| Month | |||||
| June | Reference | ||||
| January | 1.87 | 1.78 | – | 1.98 | <0.001 |
| February | 1.52 | 1.44 | – | 1.61 | <0.001 |
| March | 1.24 | 1.17 | – | 1.32 | <0.001 |
| April | 1.64 | 1.56 | – | 1.74 | <0.001 |
| May | 1.59 | 1.50 | – | 1.68 | <0.001 |
| July | 1.00 | 0.94 | – | 1.06 | 0.963 |
| August | 1.28 | 1.21 | – | 1.35 | <0.001 |
| September | 1.27 | 1.20 | – | 1.35 | <0.001 |
| October | 1.01 | 0.95 | – | 1.07 | 0.851 |
| November | 1.01 | 0.95 | – | 1.07 | 0.773 |
| December | 1.06 | 1.00 | – | 1.13 | 0.04 |
| Weekends (compared with weekdays) | 1.19 | 1.16 | – | 1.22 | <0.001 |
| Nighttime (17:00–09:00) (compared with daytime) | 2.55 | 2.49 | – | 2.61 | <0.001 |
| Children (compared with adult > 15 y) | 0.33 | 0.31 | – | 0.35 | <0.001 |
| COVID-19 (including suspected cases) | 1.38 | 1.29 | – | 1.46 | <0.001 |
| Pregnant women as a variable | |||||
| Odds ratio | 95%CI | p-value | |||
| Year | |||||
| 2019 | Reference | ||||
| 2021 | 1.39 | 1.38 | – | 1.41 | <0.001 |
| Female (compared with male) | 0.93 | 0.91 | – | 0.95 | <0.001 |
| Month | |||||
| June | Reference | ||||
| January | 1.91 | 1.81 | – | 2.01 | <0.001 |
| February | 1.55 | 1.47 | – | 1.65 | <0.001 |
| March | 1.27 | 1.20 | – | 1.34 | <0.001 |
| April | 1.66 | 1.57 | – | 1.75 | <0.001 |
| May | 1.60 | 1.51 | – | 1.69 | <0.001 |
| July | 1.01 | 0.95 | – | 1.07 | 0.752 |
| August | 1.31 | 1.23 | – | 1.38 | <0.001 |
| September | 1.29 | 1.22 | – | 1.37 | <0.001 |
| October | 1.02 | 0.96 | – | 1.09 | 0.448 |
| November | 1.03 | 0.97 | – | 1.09 | 0.365 |
| December | 1.08 | 1.02 | – | 1.15 | 0.008 |
| Weekends (compared with weekdays) | 1.18 | 1.16 | – | 1.21 | <0.001 |
| Nighttime (17:00–09:00) (compared with daytime) | 2.53 | 2.47 | – | 2.59 | <0.001 |
| Pregnant women | 0.48 | 0.34 | – | 0.69 | <0.001 |
| COVID-19 (including suspected cases) | 1.44 | 1.35 | – | 1.53 | <0.001 |
| Elderly patients as a variable | |||||
| Odds ratio | 95%CI | p-value | |||
| Year | |||||
| 2019 | Reference | ||||
| 2021 | 1.39 | 1.38 | – | 1.41 | <0.001 |
| Female (compared with male) | 0.93 | 0.91 | – | 0.95 | <0.001 |
| Month | |||||
| June | Reference | ||||
| January | 1.91 | 1.81 | – | 2.01 | <0.001 |
| February | 1.55 | 1.47 | – | 1.65 | <0.001 |
| March | 1.27 | 1.20 | – | 1.34 | <0.001 |
| April | 1.66 | 1.57 | – | 1.75 | <0.001 |
| May | 1.60 | 1.51 | – | 1.69 | <0.001 |
| July | 1.01 | 0.95 | – | 1.07 | 0.755 |
| August | 1.31 | 1.23 | – | 1.38 | <0.001 |
| September | 1.29 | 1.22 | – | 1.37 | <0.001 |
| October | 1.02 | 0.96 | – | 1.09 | 0.453 |
| November | 1.03 | 0.97 | – | 1.09 | 0.373 |
| December | 1.08 | 1.02 | – | 1.15 | 0.008 |
| Weekends (compared with weekdays) | 1.18 | 1.16 | – | 1.21 | <0.001 |
| Nighttime (17:00–09:00) (compared with daytime) | 2.53 | 2.47 | – | 2.59 | <0.001 |
| Old (compared with young <65 y) | 1.01 | 0.99 | – | 1.03 | 0.403 |
| COVID-19 (including suspected cases) | 1.44 | 1.35 | – | 1.53 | <0.001 |
| Vulnerable patients as a variable | |||||
| Odds ratio | 95%CI | p-value | |||
| Year | |||||
| 2019 | Reference | ||||
| 2021 | 1.40 | 1.38 | – | 1.41 | <0.001 |
| Female (compared with male) | 0.94 | 0.92 | – | 0.96 | <0.001 |
| Month | |||||
| June | Reference | ||||
| January | 1.93 | 1.83 | – | 2.03 | <0.001 |
| February | 1.56 | 1.48 | – | 1.65 | <0.001 |
| March | 1.27 | 1.20 | – | 1.35 | <0.001 |
| April | 1.66 | 1.57 | – | 1.75 | <0.001 |
| May | 1.60 | 1.51 | – | 1.69 | <0.001 |
| July | 1.01 | 0.95 | – | 1.07 | 0.867 |
| August | 1.29 | 1.22 | – | 1.37 | <0.001 |
| September | 1.29 | 1.22 | – | 1.37 | <0.001 |
| October | 1.02 | 0.96 | – | 1.09 | 0.457 |
| November | 1.03 | 0.97 | – | 1.10 | 0.328 |
| December | 1.09 | 1.02 | – | 1.15 | 0.006 |
| Weekends (compared with weekdays) | 1.18 | 1.16 | – | 1.21 | <0.001 |
| Nighttime (17:00–09:00) (compared with daytime) | 2.47 | 2.41 | – | 2.53 | <0.001 |
| Vulnerable patients (compared with non-vulnerable) | 0.81 | 0.80 | – | 0.83 | <0.001 |
| COVID-19 (including suspected cases) | 1.41 | 1.32 | – | 1.50 | <0.001 |