Table 5.
Backward Regression analysis model outcome.
| Part (I) Variables with Positive Coefficients in the Backward Model | |||||||
|---|---|---|---|---|---|---|---|
| Variables | Sub-categories | Coefficients | OR | p-value | 95% CI | ||
| Gender | Male | 0.11 | 1.11 | <0.001 | 0.09, 0.13 | ||
| Years | 2019 | 0.15 | 1.17 | <0.001 | 0.11, 0.20 | ||
| 2020 | 0.40 | 1.50 | <0.001 | 0.35, 0.46 | |||
| 2021 | 0.56 | 1.75 | <0.001 | 0.51, 0.61 | |||
| 2022 | 0.48 | 1.62 | <0.001 | 0.43, 0.54 | |||
| Months | August | 0.21 | 1.23 | <0.001 | 0.14, 0.28 | ||
| December | 0.26 | 1.30 | <0.001 | 0.20, 0.32 | |||
| July | 0.12 | 1.13 | <0.001 | 0.06, 0.17 | |||
| June | 0.08 | 1.08 | <0.001 | 0.04, 0.12 | |||
| May | 0.08 | 1.08 | <0.001 | 0.04, 0.12 | |||
| November | 0.31 | 1.36 | <0.001 | 0.24, 0.38 | |||
| October | 0.21 | 1.23 | <0.001 | 0.14, 0.28 | |||
| September | 0.31 | 1.36 | <0.001 | 0.24, 0.38 | |||
| Nationalities categories | Other GCC | 0.15 | 1.16 | <0.001 | 0.08, 0.22 | ||
| Qatar | 0.18 | 1.19 | <0.001 | 0.13, 0.23 | |||
| South Asia | 0.25 | 1.28 | <0.001 | 0.20, 0.30 | |||
| Sub-Saharan Africa | 0.24 | 1.27 | <0.001 | 0.19, 0.30 | |||
| Chief complaints (Call-taking protocols) | Back Pain (Protocol 5) | 0.21 | 1.23 | <0.001 | 0.14, 0.27 | ||
| Units’ categories | Bravo | 1.3 | 3.72 | <0.001 | 1.3, 1.4 | ||
| Event | 0.24 | 1.27 | <0.001 | 0.14, 0.34 | |||
| Provisional diagnoses categories | Anaphylaxis | 1.3 | 3.61 | <0.001 | 0.86, 1.7 | ||
| Burns | 1.0 | 2.82 | <0.001 | 0.86, 1.2 | |||
| Cardiovascular | 0.27 | 1.31 | 0.002 | 0.10, 0.44 | |||
| CMC | 0.48 | 1.62 | <0.001 | 0.32, 0.65 | |||
| Diabetic Problem | 0.93 | 2.54 | <0.001 | 0.76, 1.1 | |||
| Epistaxis | 0.68 | 1.98 | <0.001 | 0.48, 0.89 | |||
| Febrile Illness | 0.94 | 2.57 | <0.001 | 0.79, 1.1 | |||
| GIGU | 0.91 | 2.49 | <0.001 | 0.76, 1.1 | |||
| HazMat | 0.41 | 1.51 | <0.001 | 0.19, 0.63 | |||
| Heat-Related | 1.4 | 3.93 | <0.001 | 1.2, 1.6 | |||
| Minor Trauma | 1.3 | 3.79 | <0.001 | 1.2, 1.5 | |||
| Neurological | 0.78 | 2.19 | <0.001 | 0.63, 0.94 | |||
| Not Recorded | 1.9 | 6.67 | <0.001 | 0.98, 2.8 | |||
| Pain | 0.98 | 2.66 | <0.001 | 0.83, 1.1 | |||
| Respiratory | 0.80 | 2.23 | <0.001 | 0.65, 0.96 | |||
| Shock | 2.0 | 7.56 | <0.001 | 1.6, 2.5 | |||
| Sick Person | 0.75 | 2.11 | 0.004 | 0.24, 1.2 | |||
| Trauma | 1.1 | 3.14 | <0.001 | 0.98, 1.3 | |||
| Response time durations | T1 (“Pending_Creation”) | 3.06 × 10−3 | 1.00 | 0.003 | 0.00, 0.01 | ||
| Part (II) Regression Analysis Models’ Comparison | |||||||
| Resid. Df | Resid. Dev | Df | DV | Cp | AIC | Pr (>Chi) | |
| Model 1 | 236,498 | 249,941 | 0 | −1.71 | 250,173 | 250,200 | 0.63 |
| Model 2 | 236,501 | 249,943 | 0 | 0 | 250,173 | 250,169 | |
| Deviance Residuals: | Min | 1Q | Median | 3Q | Max | ||
| Model 1 | −1.944 | −0.861 | −0.5248 | 1.0219 | 2.8513 | ||
| Model 2 | −1.945 | −0.861 | −0.5246 | 1.0217 | 2.8508 | ||
Model 1 (Full variables model): Decision~Zone + Priority + Gender + Year + Month + AgeCategories + NAT_Categories + ChiefComplaint_CAT + Unit_Categories + P.Diagnosis_CAT + CFS Creation_Pending dispatch_MIN (T1) + Pending _Active dispatch_MIN (T2) + CFS creation_Assigned available_MIN (T3). Model 2 (Backward model): Decision~Zone + Gender + Year + Month + AgeCategories + NAT_Categories +ChiefComplaint_CAT + Unit_Categories + P.Diagnosis_CAT + CFS creation_Assigned available_MIN (T3) + CFS Creation_Pending dispatch_MIN (T1).