Table 2.
Characteristics of medical nonarrest tracheal intubation patients for outcomes analysis period 2003 to 2005.*
| Medical Nonarrest (n=8,162) |
Medical Nonarrest, Linked Cases Only (n=5,641) |
|||
|---|---|---|---|---|
| Characteristic | No. | (%) | No. | (%) |
| Patient age, y | ||||
| ≤6 | 175 | (2.1) | 47 | (0.8) |
| 7–17 | 171 | (2.1) | 69 | (1.2) |
| ≥18 | 7,757 | (95.0) | 5,504 | (97.6) |
| Unknown | 59 | (0.7) | 21 | (0.4) |
| Sex | ||||
| Male | 3,990 | (48.9) | 2,712 | (48.1) |
| Female | 4,050 | (49.6) | 2,871 | (50.9) |
| Unknown | 122 | (1.5) | 58 | (1.0) |
| Pulse, beats/min | ||||
| ≤40 | 742 | (9.1) | 508 | (9.0) |
| 40–80 | 1,724 | (21.1) | 1,175 | (20.8) |
| >80 | 5,454 | (66.8) | 3,830 | (67.9 |
| Unknown | 242 | (3.0) | 128 | (2.3) |
| Systolic blood pressure, mm Hg | ||||
| ≤60 | 1,338 | (16.4) | 952 | (16.9) |
| 61–100 | 1,301 | (15.9) | 947 | (16.8) |
| 101–140 | 2,881 | (28.0) | 1,459 | (25.8) |
| >140 | 2,765 | (33.9) | 1,980 | (35.1) |
| Unknown | 477 | (5.8) | 303 | (5.4) |
| Glasgow Coma Scale score | ||||
| 3–8 | 4,968 | (60.9) | 3,480 | (61.7) |
| 9–12 | 887 | (10.9) | 621 | (11.0) |
| 13–15 | 1,994 | (24.4) | 1,352 | (24.0) |
| Unknown | 313 | (3.8) | 188 | (3.3) |
| Rescuer cumulative patient contacts (2000–2005), No. | ||||
| <1,000 | 2,456 | (30.1) | 1,479 | (26.2) |
| 1,001–2,000 | 2,329 | (28.5) | 1,615 | (28.6) |
| 2,001–4,000 | 2,242 | (27.5) | 1,671 | (29.6) |
| >4,000 | 1,135 | (13.9) | 876 | (15.5) |
| EMS agency population setting | ||||
| Nonurban | 4,070 | (49.8) | 2,747 | (48.7) |
| Urban† | 3,237 | (39.7) | 2,562 | (45.4) |
| Air medical | 847 | (10.4) | 327 | (5.8) |
| Unknown | 8 | (0.1) | 5 | (0.1) |
| Year | ||||
| 2003 | 2,842 | (24.8) | 1,947 | (34.5) |
| 2004 | 2,778 | (34.0) | 1,913 | (33.9) |
| 2005 | 2,542 | (31.1) | 1,781 | (31.6) |
|
Cumulative tracheal intubation experience (2000–2005) of rescuer performing tracheal intubation, No. |
||||
| 1–10 | 2,482 | (30.4) | 1,634 | (29.0) |
| 11–25 | 3,342 | (41.0) | 2,327 | (41.2) |
| 26–50 | 1,953 | (23.9) | 1,398 | (24.8 |
| >50 | 385 | (4.7) | 282 | (5.0) |
| Patient outcome (survival; linked cases only) | ||||
| Alive | N/A | N/A | 3,534 | (62.7) |
| Dead | N/A | N/A | 2,107 | (37.3) |
*
Column for linked cases reflects patients linked to hospital or death records in any of the 5 imputed data sets.
†
EMS agency located in Allentown, Erie, Harrisburg, Lancaster, Philadelphia, Pittsburgh, Reading, Wilkes-Barre, or York areas.