Table 1.
Patient and Event Characteristics, Including Differences by Presence of Temperature Variability
| Characteristic | Total (n = 186) | Temperature variability (n = 124) | No temperature variability (n = 62) | p |
|---|---|---|---|---|
| Sex | ||||
| Male | 131 (70.4) | 86 (69.4) | 45 (72.6) | 0.78 |
| Female | 55 (29.6) | 38 (30.6) | 17 (27.4) | |
| Age (years), mean ± SD | 53.8 ± 15.7 | 53.7 ± 13.7 | 54.3 ± 19.3 | 0.80 |
| BMI, mean ± SD | 27.2 ± 7.5 | 27.9 ± 7.1 | 25.8 ± 8.1 | 0.08 |
| Race | ||||
| Caucasian | 127 (68.3) | 82 (66.1) | 45 (72.6) | 0.13 |
| African American | 27 (14.5) | 18 (14.5) | 9 (14.5) | |
| Asian | 13 (67.0) | 7 (5.6) | 6 (9.7) | |
| Other/unknown | 19 (10.2) | 17 (13.7) | 2 (3.2) | |
| Location of cardiac arrest, | ||||
| Out of hospital | 167 (89.8) | 114 (91.9) | 50 (80.6) | 0.10 |
| In-hospital | 19 (10.2) | 9 (7.3) | 10 (16.1) | |
| Initial rhythm | ||||
| Shockable | 66 (35.5) | 54 (43.5) | 12 (19.4) | 0.002* |
| Nonshockable | 120 (64.5) | 70 (56.5) | 50 (80.6) | |
| Cause of cardiac arrest | ||||
| Cardiac | 82 (44.1) | 59 (47.6) | 23 (37.1) | 0.39 |
| Respiratory | 76 (40.9) | 47 (37.9) | 29 (46.8) | |
| Unknown | 28 (15.0) | 18 (14.5) | 10 (16.1) | |
| Witnessed | 103 (55.4) | 66 (53.7) | 37 (60.7) | 0.46 |
| Bystander CPR | 116 (62.4) | 69 (55.6) | 47 (77.0) | 0.01* |
| Length of CA from EMS arrival** (minutes) mean ± SD | 19.2 ± 13.7 | 21.4 ± 14.5 | 14.6 ± 10.4 | 0.01* |
| Shivering | 111 (59.7) | 83 (66.9) | 28 (45.2) | 0.01* |
| Paralytic use | 130 (69.9) | 91 (73.4) | 39 (62.9) | 0.19 |
| EEGa | 148 (79.6) | 98 (79.0) | 50 (80.6) | 0.95 |
| Epileptic seizuresb | 33 (17.7) | 20 (16.1) | 13 (21.0) | 0.54 |
| Length of hospitalization, mean ± SD | 12.7 ± 20.1 | 12.6 ± 21.9 | 13.0 ± 16.2 | 0.90 |
| Discharge disposition | ||||
| Home | 26 (14.0) | 21 (16.9) | 5 (8.1) | 0.54 |
| SNF/rehabilitation | 23 (12.4) | 14 (11.3) | 9 (14.5) | |
| AMA | 5 (2.7) | 3 (2.4) | 2 (3.2) | |
| Outside hospital | 4 (2.2) | 3 (2.4) | 1 (1.6) | |
| Deceased | 128 (68.8) | 83 (66.9) | 45 (72.6) | |
| CPCc at discharge | ||||
| 1–2 (good) | 47 (25.3) | 35 (28.2) | 12 (19.4) | 0.26 |
| 3–5 (poor) | 139 (74.7) | 89 (71.8) | 50 (80.6) | |
| Survival | 58 (31.2) | 41 (33.1) | 17 (27.4) | 0.54 |
Data are reported as n (%) unless otherwise noted.
*
Denotes group difference p < 0.05.
**
40% missing data.
a
EEG.
b
Seizures diagnosed by EEG.
c
Cerebral Performance Category scale.
AMA, against medical advice; BMI, body mass index; CPC, Cerebral Performance Category; CPR, cardiopulmonary resuscitation; EEG, electroencephalogram; SD, standard deviation; SNF, skilled nursing facility.