Table 1.
Baseline characteristics.
| Characteristics | Overall |
|---|---|
| Patient characteristics (n = 39) | |
| Age—year † | 67 (49, 78) |
| Male—n (%) | 22 (56.4) |
| Weight—kg * | 61.6 ± 14.8 |
| Height—cm * | 161.4 ± 8.5 |
| Body mass index (BMI)—kg/m2 † | 23.3 (19.7, 25) |
| Inspiratory hold—n (%) | 30 (76.9) |
| Co-morbidity—n (%) | |
| Hypertension | 22 (56.4) |
| Coronary artery disease | 10 (25.6) |
| Dyslipidemia | 10 (25.6) |
| Diabetes | 9 (23.1) |
| End-stage kidney disease | 9 (23.1) |
| Others | 24 (61.5) |
| None | 7 (18) |
| Rescuer’s hand measurement (n = 69) | |
| Age—year † | 26 (24, 31) |
| Male—n (%) | 37 (53.6) |
| Weight—kg † | 64 (56, 75) |
| Height—cm * | 167.3 ± 7.3 |
| Body mass index (BMI)—kg/m2 † | 22.3 (20, 26.2) |
| Career—n (%) | |
| Certified-BLS Lay rescuer | 18 (26.1) |
| Registered nurse | 16 (23.2) |
| Paramedic | 11 (15.9) |
| Medical student | 11 (15.9) |
| Physician | 6 (8.7) |
| Practical nurse | 4 (5.8) |
| Nurse aid | 2 (2.9) |
| Emergency nurse practitioner | 1 (1.5) |
| Right-hand as dominant hand—n (%) | 62 (90) |
| Preferred left hand underneath when performed chest compressions—n (%) | 41 (59.4) |
| Fingerbreadth width of dominant hand—cm * | |
| One FB (index finger) | 1.9 ± 0.3 |
| Two FB (index, middle fingers) | 3.6 ± 0.44 |
| Three FB (index, middle, ring fingers) | 5.4 ± 0.6 |
Abbreviations: BLS, basic life support; FB, fingerbreadth. * mean ± standard deviation. † median (interquartile range).