Table 2.
Characteristics of study population (n = 140).
| Mean age ± SD (years) | 37.28 ± 8.97 |
| Sex (n, %) | |
| Female | 47 (33.57%) |
| Male | 93 (66.43%) |
| Professional category (n, %) | |
| Physicians | 45 (32.14%) |
| Nurses | 45 (32.14%) |
| First-aid workers | 50 (35.71%) |
| Professional experience (n, %) | |
| High (≥10 years) | 63 (45.00%) |
| Medium (5 ≤ n < 10 years) | 36 (25.70%) |
| Little (<5 years) | 41 (29.30%) |
| Handedness (n, %) | |
| Right-handed | 118 (84.29%) |
| Left-handed | 14 (10.00%) |
| Ambidextrous | 8 (5.71%) |
| Size of the hand squeezing the bag (n, %) | |
| Large (≥23 cm) | 21 (15.00%) |
| Medium (19 ≤ n < 23 cm) | 101 (72.14%) |
| Small (15 ≤ n < 19 cm) | 18 (12.86%) |
| Grip strength (n, %) | |
| Hand squeezing the bag | |
| High (≥40 kgF) | 53 (37.90%) |
| Medium (20 ≤ n < 40 kgF) | 65 (46.40%) |
| Weak (0 ≤ n < 20 kgF) | 22 (15.70%) |
| Hand keeping the mask∗ | |
| High (≥40 kgF) | 38 (27.70%) |
| Medium (20 ≤ n < 40 kgF) | 68 (49.60%) |
| Weak (0 ≤ n < 20 kgF) | 31 (22.60%) |
| BVM type used frequently (n, %) | |
| Ambu® | 76 (54.29%) |
| Laerdal® | 3 (2.14%) |
| Both | 39 (27.86%) |
| Neither | 22 (15.71%) |
| Estimated manual ventilation performance (n, %) ∗∗ | |
| Good | 55 (39.57%) |
| Medium | 83 (59.71%) |
| Bad | 1 (0.72%) |
SD: standard deviation; ∗3 missing values; ∗∗1 missing value.