Table 1. Participants’ characteristics.
| Characteristics | Total (n = 141) | Group A | Group B | Group C | Group D | P-value |
|---|---|---|---|---|---|---|
| Age—year, median (IQR Q1-Q3) | 23 (21–25) | 23 (22–26) | 23 (22–25) | 24 (23–24) | 23 (22–24) | 0.62 |
| Male gender-no. (%) | 58 (41) | 15 (42) | 15 (38) | 15 (42) | 13 (40) | 0.98 |
| Height-cm,median (IQR Q1-Q3) | 163 (158–170) |
161 (157–170) | 162 (157–170) | 165 (158–171) | 165 (158–171) |
0.72 |
| Weight-kg,median (IQR Q1-Q3) | 55 (50–64) | 55 (47–63) | 53 (48–63) | 55 (50–67) | 54 (51–65) | 0.49 |
| Participant status—no. (%) | 0.67 | |||||
| Medical student | 70 (50) | 17 (49) | 20 (51) | 19 (54) | 14 (44) | |
| Junior resident | 4 (3) | 0 (0) | 2 (5) | 2 (6) | 0 (0) | |
| Nurse | 63 (45) | 16 (46) | 16 (41) | 13 (37) | 18 (56) | |
| Staff doctor | 2 (1) | 1 (3) | 1 (3) | 0 (0) | 0 (0) | |
| EMS | 2 (1) | 1 (3) | 0 (0) | 1 (3) | 0 | |
| Any lecture experienced about chest compression -times, median (IQR Q1-Q3) | 3 (2–4) | 3 (2–3) | 3 (2–4) | 3 (2–4) | 3 (2–4) | 0.18 |
| Last lecture-no. (%) | 0.37 | |||||
| 〜half yr ago | 56 (40) | 12 (34) | 19 (49) | 12 (34) | 13 (40) | |
| 〜1yr ago | 33 (23) | 10 (29) | 10 (26) | 8 (23) | 5 (16) | |
| 〜2yr ago | 30 (21) | 7 (20) | 5 (13) | 12 (34) | 6 (19) | |
| 〜4yr ago | 13 (9) | 2 (6) | 3 (8) | 3 (8) | 5 (16) | |
| 4yr ago〜 | 9 (6) | 4 (11) | 2 (5) | 0 (0) | 3 (9) | |
| CPR experience times-no. (%) | ||||||
| 0 | 130 (92) | 33 (94) | 37 (95) | 32 (91) | 28 (88) | 0.45 |
| 1〜5 | 9 (6) | 1 (3) | 2 (6) | 2 (6) | 4 (13) | |
| 5〜10 | 1 (1) | 1 (3) | 0 (0) | 0 (0) | 0 (0) | |
| 10〜 | 1 (1) | 0 (0) | 0 (0) | 1 (3) | 0 (0) | |
| 20 min exercises in a week-no. (%) | ||||||
| 0 | 63 (45) | 19 (54) | 17 (44) | 12 (34) | 15 (49) | 0.98 |
| 1 | 23 (16) | 6 (17) | 7 (18) | 6 (17) | 4 (13) | |
| 2 | 23 (16) | 5 (14) | 6 (15) | 7 (20) | 5 (16) | |
| 3 | 21 (15) | 3 (9) | 6 (15) | 7 (20) | 5 (16) | |
| 4 | 5 (3) | 1 (3) | 2 (5) | 1 (3) | 1 (3) | |
| 5〜 | 6 (4) | 1 (3) | 1 (3) | 2 (6) | 2 (6) |
IQR: interquartile range; EMS: emergency medical services; BLS: basic life support; ALS: advanced life support; CPR: cardiopulmonary resuscitation