Table 2.
Proportion of emergency severity index, hospital admission, ICU admission, medical resources utilization, stratified by race/ethnics, NHAMCS 2005–2016.
| All | White | Black | Hispanic | Asian | Other | |
|---|---|---|---|---|---|---|
| ESI score | ||||||
| Immediate | 5,020,918 (1.8) | 2,741,469 (1.9) | 1,200,498 (1.8) | 901,281 (1.6) | 112,686 (2.0) | 64,984 (1.9) |
| Emergent | 21,346,130 (7.8) | 12,062,886 (8.4) | 4,870,376 (7.4) | 3,723,519 (6.7) | 441,215 (7.9) | 248,133 (7.1) |
| Urgent | 99,842,177 (36.3) | 52,495,741 (36.4) | 23,862,805 (36.3) | 19,894,999 (35.6) | 2,253,751 (40.4) | 1,334,881 (38.2) |
| Semi-urgent | 115,276,218 (41.9) | 59,887,811 (41.5) | 27,380,048 (41.7) | 24,107,749 (43.1) | 2,365,042 (42.4) | 1,535,568 (43.9) |
| Non-urgent | 33,470,812 (12.2) | 17,076,986 (11.8) | 8,406,217 (12.8) | 7,263,184 (13.0) | 411,097 (7.4) | 313,328 (9.0) |
| Hospital admission | 15,865,082 (4.8) | 9,149,439 (5.3) | 3,133,698 (3.9) | 2,971,794 (4.3) | 342,705 (5.3) | 267,446 (6.3) |
| ICU | 914,937 (0.3) | 453,609 (0.3) | 202,374 (0.3) | 210,375 (0.3) | 45,502 (0.7) | 3,077 (0.1) |
| In hospital death | 139,666 (0.0) | 63,413 (0.0) | 35,237 (0.0) | 38,287 (0.1) | 2,729 (0.0) | 0 (0.0) |
| Blood test | 58,141,100 (17.5) | 32,166,587 (18.5) | 12,315,970 (15.4) | 11,792,576 (17.2) | 1,097,368 (16.9) | 768,599 (18.0) |
| Any image | 108,114,905 (32.5) | 62,043,795 (35.7) | 23,385,877 (29.2) | 19,350,391 (28.2) | 2,049,570 (31.5) | 1,285,272 (30.1) |
| X-ray | 89,642,862 (26.9) | 51,045,276 (29.4) | 20,059,185 (25.0) | 15,607,215 (22.7) | 1,795,095 (27.6) | 1,136,091 (26.6) |
| CT | 19,123,492 (5.7) | 12,132,915 (7.0) | 3,365,450 (4.2) | 3,205,937 (4.7) | 236,894 (3.6) | 182,296 (4.3) |
| Ultrasound | 5,184,122 (1.6) | 2,643,688 (1.5) | 1,055,389 (1.3) | 1,327,356 (1.9) | 102,929 (1.6) | 54,761 (1.3) |
| MRI | 537,589 (0.2) | 258,519 (0.1) | 123,646 (0.2) | 155,110 (0.2) | 314 (0.0) | 0 (0.0) |
| Other Image | 1,909,039 (0.6) | 1,009,607 (0.6) | 477,377 (0.6) | 362,436 (0.5) | 33,549 (0.5) | 26,070 (0.6) |
| Procedure | 122,284,391 (36.7) | 67,698,028 (39.0) | 28,013,125 (35.0) | 22,628,628 (33.0) | 2,436,860 (37.5) | 1,507,750 (35.3) |
| Waiting time [minutes, means (95% CI)] |
46.1 (45.6–46.7) | 42.0 (41.4–42.7) | 50.5 (49.5–51.6) | 52.0 (50.7–53.2) | 44.0 (40.5–47.5) | 40.9 (37.6–44.2) |
| Length of visit [minutes, means (95% CI)] |
152.9 (151.6–154.1) | 143.9 (142.2–145.6) | 159.5 (157.0–161.9) | 167.7 (164.4–170.9) | 167.1 (159.2–175.0) | 137.2 (129.5–144.9) |
Waiting time is time from arrival to seeing the physician; length of visit is time from arrival to discharge. All p-values from chi-square tests are <0.001.