Figure 1
Regression analysis for the impact of sociodemographic and CPR variables on the level of knowledge_
| Unstandardized coefficients | Standardized coefficients | Confidence interval for B (lower bound – upper bound) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| B | Standard error | β | t | P-value | F (p) | R2 | |||
| before CPR training | constant | 4.244 | 1.293 | 3.284 | 1.706 6.783 | 0.001 | 6.089 | 0.046 | |
| age* | 0.274 | 0.084 | 0.128 | 3.260 | 0.109 0.439 | 0.001 | (<0.001) | ||
| BMI* | 0.051 | 0.024 | 0.081 | 20.86 | 0.003 0.099 | 0.037 | |||
| gender* | -0.447 | 0.162 | -0.109 | -2.765 | -0.765 -0.130 | 0.006 | |||
| maternal educational achievement | 0.173 | 0.101 | 0.067 | 1.718 | -0.025 0.370 | 0.086 | |||
| previous CPR training* | 0.398 | 0.175 | 0.090 | 2.270 | 0.054 0.742 | 0.024 | |||
| previous viewing of a CPR film | 0.299 | 0.165 | 0.072 | 1.812 | -0.025 0.623 | 0.070 | |||
| after CPR training | constant | 10.907 | 0.334 | 32.608 | 10.250 11.564 | <0.001 | 9.036 | 0.044 | |
| gender* | -0.704 | 0.172 | -0.176 | -4.104 | -1.041 -0.367 | <0.001 | (<0.001) | ||
| paternal educational achievement | 0.116 | 0.122 | 0.046 | 0.955 | -0.123 0.355 | 0.340 | |||
| maternal educational achievement* | 0.269 | 0.117 | 0.111 | 2.298 | 0.039 0.498 | 0.022 | |||
Schoolchildren’s level of CPR knowledge before and after CPR training according to grade_
| Before CPR training (n=762) | After CPR training (n=566) | Average difference (pre–post CPR training for each grade) | P-value t-test | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | M | SD | n | M | SD | M | SD | (pre–post CPR training for each grade) | ||
| 7th grade 12.5 years | Knowledge of CPR with the use of an AED | 244 | 8.97 | 2.20 | 185 | 11.62 | 2.04 | 2.65 | 0.21 | 0.001* |
| 8th grade 13.5 years | Knowledge of CPR with the use of an AED | 254 | 9.37 | 1.99 | 174 | 11.44 | 2.11 | 2.07 | 0.20 | 0.001* |
| 9th grade 14.5 years | Knowledge of CPR with the use of an AED | 264 | 10.04 | 2.04 | 207 | 11.52 | 2.00 | 1.48 | 0.19 | 0.001* |
| p-value one-way ANOVA (according to grades) | 0.001** | 0.693 | 0.001** | |||||||
Ranking of schoolchildren’s knowledge before and after CPR training according to grade_
| CPR knowledge | Before CPR training | Post CPR training | Chi-square test | ||||
|---|---|---|---|---|---|---|---|
| n | f (%) | n | f (%) | (p-value) | |||
| 7th grade | Unsatisfactory | <44% | 33 | 13.5 | 2 | 1.1 | 126.609 |
| Satisfactory | 45-59% | 67 | 27.5 | 13 | 7.0 | 0.001 | |
| Good | 60-74% | 76 | 31.1 | 30 | 16.2 | ||
| Very good | 75-89% | 60 | 24.6 | 72 | 38.9 | ||
| Excellent | 90-100% | 8 | 3.3 | 68 | 36.8 | ||
| 8th grade | Unsatisfactory | <44% | 25 | 9.8 | 4 | 2.3 | 101.507 |
| Satisfactory | 45-59% | 46 | 18.1 | 11 | 6.3 | 0.001 | |
| Good | 60-74% | 105 | 41.3 | 34 | 19.5 | ||
| Very good | 75-89% | 70 | 27.6 | 65 | 37.4 | ||
| Excellent | 90-100% | 8 | 3.1 | 60 | 34.5 | ||
| 9th grade | Unsatisfactory | <44% | 12 | 4.5 | 4 | 1.9 | 54.860 |
| Satisfactory | 45-59% | 43 | 16.3 | 10 | 4.8 | 0.001 | |
| Good | 60-74% | 93 | 35.2 | 43 | 20.8 | ||
| Very good | 75-89% | 87 | 33.0 | 79 | 38.2 | ||
| Excellent | 90-100% | 29 | 11.0 | 71 | 34.3 | ||