Factors associated with arrival by EMS or via local doctor in patients with ED diagnosis of acute coronary syndrome and unspecified chest pain
| Acute coronary syndrome | Unspecified chest pain | |||||||
| EMS arrival | GP referred | EMS arrival | GP referred | |||||
| AOR (95% CI) | P value | AOR (95% CI) | P value | AOR (95% CI) | P value | AOR (95% CI) | P value | |
| Campaign activity (trend) | ||||||||
| Precampaign | 1.00 (1.00 to 1.01) | 0.004 | 0.99 (0.99 to 1.00) | 0.001 | 1.00 (1.00 to 1.00) | <0.0001 | 1.00 (1.00 to 1.00) | 0.076 |
| Campaign | 1.00 (0.99 to 1.00) | 0.416 | 1.00 (1.00 to 1.01) | 0.158 | 1.00 (1.00 to 1.00) | 0.380 | 1.01 (1.01 to 1.01) | <0.0001 |
| Postcampaign | 1.00 (1.00 to 1.00) | 0.472 | 1.00 (0.99 to 1.01) | 0.814 | 1.00 (1.00 to 1.00) | 0.908 | 1.00 (1.00 to 1.00) | 0.782 |
| Change | ||||||||
| Precampaign–campaign | 1.10 (1.05 to 1.16) | <0.0001 | 0.77 (0.70 to 0.86) | <0.0001 | 1.03 (1.00 to 1.06) | 0.019 | 0.79 (0.75 to 0.82) | <0.0001 |
| Campaign–postcampaign | 1.00 (0.93 to 1.07) | 0.982 | 0.95 (0.83 to 1.07) | 0.396 | 1.04 (1.01 to 1.08) | 0.005 | 0.93 (0.88 to 0.98) | 0.005 |
| Sex | ||||||||
| Male | 0.89 (0.87 to 0.91) | <0.0001 | 0.97 (0.93 to 1.02) | 0.234 | 0.93 (0.92 to 0.94) | <0.0001 | 0.89 (0.88 to 0.91) | <0.0001 |
| Age (years) | ||||||||
| 20–44 | 0.32 (0.30 to 0.33) | <0.0001 | 1.14 (1.04 to 1.24) | 0.003 | 0.20 (0.20 to 0.21) | <0.0001 | 1.05 (1.02 to 1.08) | <0.0001 |
| 45–64 | 0.44 (0.43 to 0.45) | <0.0001 | 1.21 (1.16 to 1.27) | <0.0001 | 0.38 (0.38 to 0.39) | <0.0001 | 1.19 (1.16 to 1.21) | <0.0001 |
| 65+ | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Country of birth | ||||||||
| Australia | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Overseas | 0.89 (0.87 to 0.91) | <0.0001 | 1.13 (1.08 to 1.18) | <0.0001 | 0.85 (0.84 to 0.86) | <0.0001 | 1.18 (1.15 to 1.21) | <0.0001 |
| Preferred language | ||||||||
| English | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Other | 0.94 (0.89 to 1.00) | 0.050 | 1.03 (0.93 to 1.14) | 0.601 | 0.97 (0.94 to 1.00) | 0.051 | 1.02 (0.97 to 1.08) | 0.368 |
| Interpreter required | ||||||||
| No | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Yes | 0.93 (0.86 to 1.00) | 0.050 | 1.15 (1.01 to 1.31) | 0.038 | 0.97 (0.93 to 1.01) | 0.144 | 1.14 (1.07 to 1.22) | <0.0001 |
| Household | ||||||||
| Lives with others | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Lives alone | 1.30 (1.25 to 1.36) | <0.0001 | 1.04 (0.97 to 1.11) | 0.252 | 1.48 (1.45 to 1.51) | <0.0001 | 0.93 (0.89 to 0.96) | <0.0001 |
| Residence | ||||||||
| Major city | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Other | 0.79 (0.77 to 0.81) | <0.0001 | 1.58 (1.51 to 1.66) | <0.0001 | 0.76 (0.75 to 0.77) | <0.0001 | 1.04 (1.02 to 1.06) | 0.001 |
| Season | ||||||||
| Winter | 1.02 (0.99 to 1.05) | 0.110 | 1.03 (0.98 to 1.08) | 0.207 | 1.00 (0.99 to 1.01) | 0.894 | 1.04 (1.02 to 1.06) | <0.0001 |
| Other | 1.00 | 1.00 | 1.00 | |||||
| ACS subtype* | ||||||||
| Unstable angina | 1.00 | 1.00 | ||||||
| AMI | 1.19 (1.17 to 1.22) | <0.0001 | 1.12 (1.07 to 1.16) | <0.0001 | ||||
*Based on emergency department diagnosis for this admission.
ACS, acute coronary syndrome; AMI, acute myocardial infarction; AOR, adjusted OR; ED, emergency department; EMS, emergency medical services; GP, general practitioner.