Table 1 A comparison among the characteristics of the total cohort, and patients brought in by ambulance vs. alternate transportation
n | Total cohort | Ambulance arrival | Alternate transport | p |
|---|---|---|---|---|
n = 599 | n = 157 (26.2%) | n = 442 (73.8%) | ||
Age | ||||
(Years, mean ± 95% CI, n) | 48.8±1.4 (599) | 51.9±2.7 (157) | 47.7±1.6 (442) | p = 0.010 |
Sex | p = 0.706 | |||
Female (%, n) | 44.6% (267) | 45.9% (72) | 44.1% (195) | |
Male (%, n) | 55.4% (332) | 54.1% (85) | 55.9% (247) | |
Race | ||||
White (%, n) | 64.3% (385/599) | 66.9% (105/157) | 63.3% (280/442) | p = 0.714 |
Black (%, n) | 18.0% (108/599) | 17.2% (27/157) | 18.3% (81/442) | |
Asian (%, n) | 8.9% (53/599) | 7.0% (11/157) | 9.5% (42/442) | |
Hispanic (%, n) | 6.0% (36/599) | 7.0% (11/157) | 5.7% (25/442) | |
Other (%, n) | 2.8% (17/599) | 1.0% (3/157) | 3.2% (14/157) | |
Insurance | ||||
Private (%, n) | 41.7% (250/599) | 35.7% (56/157) | 43.9% (194/442) | p = 0.038 |
Medicaid (%, n) | 25.4% (152/599) | 22.9% (36/157) | 26.2% (116/442) | |
Medicare (%, n) | 21.5% (129/599) | 29.3% (46/157) | 18.8% (83/442) | |
Self pay/other (%, n) | 11.4% (68/599) | 12.1% (19/157) | 11.1% (49/442) | |
Insurance | ||||
Private/self/Medicaid (%, n) | 78.4% (467/596) | 70.1% (108/154) | 81.2% (359/442) | p = 0.004 |
Medicare (%, n) | 21.6% (129/596) | 29.9% (46/154) | 18.8% (83/442) | |
Time of arrival | ||||
7:00 am-6:59 pm (%, n) | 70.6% (423/599) | 65.6% (103/157) | 72.4% (320/442) | p = 0.108 |
7:00 pm-6:59 am (%, n) | 29.4% (176/599) | 34.4% (54/157) | 27.6% (122/422) | |
Day of arrival | ||||
Weekday (%, n) | 75.0% (449/599) | 79.6% (125/157) | 77.4% (342/442) | p = 0.560 |
Weekend (%, n) | 25.0% (150/599) | 20.4% (32/157) | 22.6% (100/442) | |
Shortness of breath | ||||
No (%, n) | 92.0% (551/599) | 94.9% (149/157) | 91.0% (402/442) | p = 0.117 |
Yes (%, n) | 8.0% (48/599) | 5.1% (8/157) | 9.0% (40/442) | |
History of CAD | ||||
No (%, n) | 76.3% (425/557) | 70.6% (101/143) | 78.3% (324/414) | p = 0.064 |
Yes (%, n) | 23.7% (132/557) | 29.4% (42/143) | 21.7% (90/414) | |
History of diabetes | ||||
No (%, n) | 87.7% (490/559) | 81.9% (118/144) | 89.6% (372/415) | p = 0.016 |
Yes (%, n) | 12.3% (69/559) | 18.1% (26/144) | 10.4% (43/415) | |
History of hypertension | ||||
No (%, n) | 70.6% (397/562) | 61.0% (89/146) | 74.0% (308/416) | p = 0.003 |
Yes (%, n) | 29.4% (165/562) | 39.0% (57/146) | 26.0% (108/416) | |
History of hypercholesterolemia | ||||
No (%, n) | 86.2% (483/560) | 83.3% (120/144) | 87.3% (363/416) | p = 0.238 |
Yes (%, n) | 13.8% (77/560) | 16.7% (24/144) | 12.7% (53/416) | |
Smoker | ||||
No (%, n) | 67.2% (379/564) | 67.6% (92/136) | 67.1% (287/428) | p = 0.898 |
Yes (%, n) | 32.8% (185/564) | 32.4% (44/136) | 32.9% (141/428) | |
Systolic blood pressure | ||||
mmHg, mean ± 95% CI, n | 134.5±1.7 (594) | 134.9±3.7 (154) | 134.3±2.0 (440) | p = 0.802 |
Diastolic blood pressure | ||||
mmHg, mean ± 95% CI, n | 75.0±1.2 (594) | 78.6±2.2 (154) | 73.7±1.4 (440) | p < 0.001 |
Heart rate | ||||
Bpm, mean ± 95% CI, n | 83.0±1.5 (595) | 86.7±3.1 (154) | 81.7±1.7 (441) | p = 0.004 |
Respiratory rate | ||||
Rpm, mean ± 95% CI, n | 18.3±0.4 (573) | 18.5±1.2 (142) | 18.2±0.2 (431) | p = 0.508 |
Temperature | ||||
oC, mean ± 95% CI, n | 36.6±0.1 (535) | 36.7±0.1 (139) | 36.6±0.1 (396) | p = 0.134 |
Oxygen saturation | ||||
Percent, mean ± 95% CI, n | 97.9±0.2 (542) | 98.2±0.4 (141) | 97.8±0.2 (401) | p = 0.018 |
Disposition | ||||
Discharged (%, n) | 47.7% (286/599) | 37.6% (59/157) | 51.4% (227/442) | p = 0.003 |
Admitted (%, n) | 52.3% (313/599) | 62.4% (98/157) | 48.6% (215/442) | |
Final diagnosis of MI | ||||
No (%, n) | 94.2% (564/599) | 93.0% (146/157) | 94.6% (418/442) | p = 0.469 |
Yes (%, n) | 5.8% (35/599) | 7.0% (11/157) | 5.4% (24/442) | |