Table 3.
OR estimates and Wald CIs for logistic regression models for the outcome of presentation to VEMD contributing hospitals versus presentation to non-VEMD contributing hospitals
| (1) Baseline model | (2) Baseline model+serious injury | (3) Baseline model+cause | (4) Baseline model+intent | (5) Baseline model+activity | |
| Outcome of interest (n/N, %) | 497 788/515 769 (96.51%) | ||||
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Financial year | |||||
| 2014/2015 | 0.86 (0.82 to 0.91) | 0.85 (0.81 to 0.90) | 0.87 (0.82 to 0.91) | 0.87 (0.82 to 0.92) | 0.86 (0.82 to 0.91) |
| 2015/2016 | 0.79 (0.75 to 0.83) | 0.78 (0.74 to 0.83) | 0.79 (0.75 to 0.83) | 0.79 (0.75 to 0.83) | 0.79 (0.75 to 0.83) |
| 2016/2017 | 0.71 (0.67 to 0.74) | 0.70 (0.67 to 0.74) | 0.71 (0.67 to 0.74) | 0.71 (0.67 to 0.74) | 0.71 (0.67 to 0.74) |
| 2017/2018 | 0.72 (0.69 to 0.76) | 0.72 (0.69 to 0.76) | 0.72 (0.69 to 0.76) | 0.72 (0.69 to 0.76) | 0.72 (0.69 to 0.76) |
| 2018/2019 | Reference | Reference | Reference | Reference | Reference |
| Female gender | 0.88 (0.85 to 0.91) | 0.88 (0.86 to 0.91) | 0.88 (0.85 to 0.91) | 0.87 (0.84 to 0.9) | 0.87 (0.84 to 0.89) |
| SEIFA | |||||
| Decile 1–2 | 2.01 (1.88 to 2.14) | 2.01 (1.88 to 2.14) | 2.02 (1.89 to 2.15) | 2.00 (1.87 to 2.13) | 1.99 (1.87 to 2.12) |
| Decile 3–4 | 3.59 (3.37 to 3.82) | 3.60 (3.38 to 3.83) | 3.61 (3.39 to 3.85) | 3.58 (3.36 to 3.81) | 3.56 (3.34 to 3.79) |
| Decile 5–6 | 2.51 (2.36 to 2.66) | 2.52 (2.38 to 2.67) | 2.52 (2.38 to 2.67) | 2.49 (2.35 to 2.64) | 2.48 (2.34 to 2.63) |
| Decile 7–8 | 3.91 (3.68 to 4.15) | 3.91 (3.68 to 4.15) | 3.97 (3.73 to 4.21) | 3.96 (3.73 to 4.20) | 3.9 0 (3.67 to 4.14) |
| Decile 9–10 | Reference | Reference | Reference | Reference | Reference |
| Age group (year) | |||||
| 0–14 | 4.68 (3.52 to 6.21) | 4.77 (3.59 to 6.33) | 5.44 (4.10 to 7.23) | 5.28 (3.97 to 7.01) | 4.71 (3.55 to 6.26) |
| 15–24 | 1.61 (1.33 to 1.95) | 1.62 (1.34 to 1.96) | 1.51 (1.25 to 1.82) | 1.53 (1.26 to 1.85) | 1.68 (1.38 to 2.03) |
| 25–34 | 1.59 (1.32 to 1.91) | 1.60 (1.33 to 1.92) | 1.53 (1.27 to 1.84) | 1.55 (1.29 to 1.86) | 1.64 (1.36 to 1.97) |
| 35–44 | 1.45 (1.20 to 1.76) | 1.46 (1.21 to 1.76) | 1.41 (1.16 to 1.70) | 1.41 (1.17 to 1.71) | 1.47 (1.21 to 1.77) |
| 45–54 | Reference | Reference | Reference | Reference | Reference |
| 55–64 | 0.75 (0.63 to 0.88) | 0.74 (0.63 to 0.87) | 0.80 (0.67 to 0.94) | 0.79 (0.67 to 0.94) | 0.74 (0.63 to 0.88) |
| 65–74 | 0.72 (0.61 to 0.84) | 0.70 (0.6 to 0.83) | 0.81 (0.69 to 0.95) | 0.79 (0.67 to 0.93) | 0.71 (0.60 to 0.84) |
| 75–84 | 1.01 (0.86 to 1.19) | 0.98 (0.83 to 1.15) | 1.17 (1.00 to 1.38) | 1.12 (0.96 to 1.32) | 1.00 (0.85 to 1.18) |
| 85+ | 0.88 (0.75 to 1.03) | 0.84 (0.72 to 0.98) | 1.04 (0.88 to 1.22) | 0.99 (0.84 to 1.15) | 0.88 (0.75 to 1.03) |
| Region | |||||
| Barwon South western (regional/rural) | 0.23 (0.19 to 0.28) | 0.23 (0.19 to 0.28) | 0.24 (0.2 to 0.29) | 0.24 (0.2 to 0.29) | 0.23 (0.19 to 0.28) |
| Eastern metropolitan | 1.29 (1.05 to 1.60) | 1.29 (1.05 to 1.6) | 1.32 (1.07 to 1.62) | 1.33 (1.08 to 1.64) | 1.30 (1.05 to 1.60) |
| Gippsland (regional/rural) | 0.63 (0.46 to 0.86) | 0.63 (0.46 to 0.86) | 0.62 (0.46 to 0.85) | 0.64 (0.47 to 0.88) | 0.63 (0.46 to 0.86) |
| Grampians (regional/rural) | 0.07 (0.06 to 0.09) | 0.07 (0.06 to 0.09) | 0.07 (0.06 to 0.09) | 0.07 (0.06 to 0.09) | 0.07 (0.06 to 0.09) |
| Hume (regional/rural) | 0.45 (0.34 to 0.59) | 0.44 (0.34 to 0.59) | 0.45 (0.34 to 0.59) | 0.46 (0.35 to 0.61) | 0.45 (0.34 to 0.59) |
| Loddon mallee (regional/rural) | 0.39 (0.31 to 0.49) | 0.39 (0.31 to 0.49) | 0.39 (0.31 to 0.49) | 0.40 (0.32 to 0.50) | 0.39 (0.31 to 0.49) |
| Southern metropolitan | 1.90 (1.54 to 2.34) | 1.90 (1.54 to 2.35) | 1.89 (1.53 to 2.34) | 1.88 (1.53 to 2.32) | 1.9 (1.54 to 2.35) |
| North and West metropolitan | Reference | Reference | Reference | Reference | Reference |
| Interaction effects* | |||||
| Serious injury | – | 1.35 (1.3 to 1.41) | – | – | – |
| Cause | |||||
| Cutting/piercing | – | – | 0.95 (0.87 to 1.03) | – | |
| Foreign body - natural orifice | – | – | 0.95 (0.83 to 1.09) | – | – |
| Hit/struck/crush | – | – | 0.9 (0.84 to 0.97) | – | – |
| Intentional self-inflicted | – | – | 2.58 (2.29 to 2.91) | – | |
| Natural/environmental/animals | – | – | 0.87 (0.79 to 0.94) | – | – |
| Other or undetermined intent | – | – | 2.27 (2.01 to 2.57) | – | – |
| Other specified | – | – | 1.26 (1.16 to 1.38) | – | – |
| Overexertion and/or strenuous movements | – | – | 0.86 (0.77 to 0.95) | – | – |
| Poisoning | – | – | 1.56 (1.36 to 1.79) | – | – |
| Transport | – | – | 1.97 (1.83 to 2.12) | – | – |
| Unspecified unintentional | – | – | 0.61 (0.58 to 0.65) | – | |
| Fall | – | – | Reference | – | |
| Intent | |||||
| Assault, maltreatment and neglect | – | – | – | 2.88 (2.4 to 3.46) | |
| Intentional self-harm | – | – | – | 2.47 (2.2 to 2.78) | – |
| Other and undetermined intent | – | – | – | 2.24 (1.98 to 2.53) | – |
| Unintentional | – | – | – | Reference | – |
| Activity | |||||
| Leisure | – | – | – | – | 2.13 (1.86 to 2.43) |
| Other specified | – | – | – | – | 1.88 (1.71 to 2.06) |
| Other types of work-unpaid | 1.84 (1.66 to 2.03) | ||||
| Unspecified | – | – | – | – | 1.41 (1.32 to 1.52) |
| Vital activities, resting, eating, sleeping | – | – | – | – | 1.41 (1.29 to 1.53) |
| Working for income | – | – | – | – | 1.32 (1.18 to 1.47) |
| Sports | – | – | – | – | Reference |
*Interaction effects between age group and region are shown in online supplemental table S1.
SEIFA, Socio-Economic Indexes for Areas; VEMD, Victorian Emergency Minimum Dataset.