Table 2.
Unadjusted and adjusted logistic regression of complete vital signs assessments.
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | |
| Age Group | ||||
| Adult | Ref | -- | Ref | -- |
| Neonate | 0.02 (0.02 – 0.03) | <0.001 | 0.02 (0.02 – 0.03) | <0.001 |
| Infant | 0.05 (0.05 – 0.05) | <0.001 | 0.04 (0.03 – 0.04) | <0.001 |
| Toddler | 0.08 (0.08 – 0.09) | <0.001 | 0.07 (0.06 – 0.07) | <0.001 |
| Early childhood | 0.16 (0.15 – 0.18) | <0.001 | 0.13 (0.12 – 0.15) | <0.001 |
| Middle childhood | 0.47 (0.41 – 0.54) | <0.001 | 0.54 (0.46 – 0.63) | <0.001 |
| Adolescent | 1.11 (0.95 – 1.31) | <0.176 | 1.40 (1.18 – 1.66) | <0.001 |
| Demographics | ||||
| Male sex | 0.87 (0.84 – 0.91) | <0.001 | 0.93 (0.89 – 0.97) | 0.001 |
| Height (inches) | 1.08 (1.07 – 1.08) | <0.001 | ||
| Weight (kg) | 1.01 (1.01 – 1.01) | <0.001 | ||
| Race/ethnicity | ||||
| White/Non-Hispanic | Ref | -- | Ref | -- |
| White/Hispanic | 1.00 (0.76 – 1.33) | 0.984 | 1.12 (0.81 – 1.54) | 0.488 |
| Black/Non-Hispanic | 1.16 (1.10 – 1.23) | <0.001 | 1.45 (1.37 – 1.55) | <0.001 |
| Black/Hispanic | 1.16 (0.73 – 1.86) | 0.526 | 1.46 (0.86 – 2.46) | 0.160 |
| Other/Unknown | 1.45 (1.39 – 1.52) | <0.001 | 1.71 (1.61 – 1.80) | <0.001 |
| Medical category | ||||
| Medical | Ref | -- | Ref | -- |
| Trauma | 0.79 (0.75 – 0.84) | <0.001 | 0.75 (0.70 – 0.80) | <0.001 |
| Respiratory | 1.04 (0.96 – 1.13) | 0.301 | 0.78 (0.71 – 0.85) | <0.001 |
| Allergy | 1.13 (0.85 – 1.51) | 0.409 | 1.26 (0.92 – 1.73) | 0.156 |
| GI/Abdominal | 1.27 (1.16 – 1.39) | <0.001 | 0.88 (0.80 – 0.97) | 0.010 |
| Cardiac | 2.45 (2.15 – 2.80) | <0.001 | 0.72 (0.62 – 0.83) | <0.001 |
| Neurology | 1.23 (1.12 – 1.35) | <0.001 | 0.86 (0.78 – 0.96) | 0.004 |
| Psychiatry | 0.19 (0.18 – 0.20) | <0.001 | 0.18 (0.17 – 0.20) | <0.001 |
| Toxicology | 2.97 (2.49 – 3.55) | <0.001 | 2.14 (1.77 – 2.59) | <0.001 |
| Dizziness/Syncope | 1.98 (1.72 – 2.28) | <0.001 | 0.87 (0.75 – 1.01) | 0.071 |
| Other | 0.23 (0.21 – 0.24) | <0.001 | 0.31 (0.29 – 0.33) | <0.001 |
| Unknown | 0.26 (0.22 – 0.30) | <0.001 | 0.43 (0.34 – 0.53) | <0.001 |
| Day period | ||||
| 00:00–05:59 | Ref | -- | Ref | -- |
| 06:00–11:59 | 1.03 (0.97 – 1.10) | 0.323 | 1.07 (1.00 – 1.16) | 0.057 |
| 12:00–17:59 | 0.93 (0.88 – 1.00) | 0.035 | 1.01 (0.94 – 1.08) | 0.789 |
| 18:00–23:59 | 0.99 (0.92 – 1.06) | 0.713 | 1.08 (1.00 – 1.16) | 0.037 |
| Year | ||||
| 2013 | Ref | -- | Ref | -- |
| 2014 | 0.84 (0.79 – 0.90) | <0.001 | 0.77 (0.72 – 0.83) | <0.001 |
| 2015 | 0.78 (0.73 – 0.84) | <0.001 | 0.70 (0.65 – 0.75) | <0.001 |
| 2016 | 0.81 (0.76 – 0.87) | <0.001 | 0.71 (0.66 – 0.76) | <0.001 |
| Response characteristics | ||||
| Advanced Life Support | 5.74 (5.42 – 6.08) | <0.001 | 3.12 (2.91 – 3.35) | <0.001 |
| Lights and siren use | 1.59 (1.50 – 1.68) | <0.001 | 1.19 (1.11 – 1.27) | <0.001 |
| Mileage | 1.00 (1.00 – 1.00) | 0.910 | ||
| Response time | 0.98 (0.98 – 0.98) | <0.001 | 1.00 (0.99 – 1.00) | 0.034 |
| Scene time | 1.01 (1.01 – 1.01) | <0.001 | 0.99 (0.99 – 0.99) | <0.001 |
| Transport time | 0.99 (0.99–0.99) | <0.001 | 1.00 (1.00 – 1.01) | <0.001 |
| Intravenous access | 6.02 (5.65 – 6.42) | <0.001 | 2.83 (2.60 – 3.08) | <0.001 |
| Monitor used | 4.04 (3.83 – 4.26) | <0.001 | 1.82 (1.69 – 1.95) | <0.001 |
| Glasgow Coma Score obtained | 1.08 (1.07 – 1.09) | <0.001 | 1.14 (1.12 – 1.15) | <0.001 |
OR, odds ratio; CI, confidence interval