Association of Training in Basic Life Support with the Evolution of Cardiopulmonary Resuscitation Performed by Firefighters
Table 5
Correlation between the firefighter characterization variables and the effectiveness of external chest compressions, up to the time of exhaustion.
Testing of CTEs in exhaustion time
Service time
Training/specialization courses
Age
Weight
Stature
Pearson’s r
BF₁₀
Pearson’s r
BF₁₀
Pearson’s r
BF₁₀
Pearson’s r
BF₁₀
Pearson’s r
BF₁₀
Total performance (%)
−0.183
0.372
0.248
0.675
−0.272
0.878
−0.125
0.258
0.111
0.241
Quality of CTEs (%)
−0.176
0.353
0.248
0.676
−0.272
0.876
−0.086
0.218
0.124
0.256
Contact of hands-on chest (%)
−0.224
0.527
0.049
0.197
−0.149
0.295
−0.365
3.327
−0.066
0.205
Test time (min)
0.092
0.223
0.129
0.263
−0.054
0.199
0.229
0.553
0.15
0.297
Absence of CTEs (sec)
0.169
0.335
−0.026
0.191
0.049
0.197
0.299
1.239
0.201
0.429
Correct hand position (%)
−0.05
0.197
−0.022
0.19
−0.099
0.229
−0.014
0.189
0.094
0.224
Total number of compressions
0.088
0.22
0.098
0.228
−0.074
0.21
0.213
0.477
0.157
0.311
Mean depth (mm)
0.205
0.446
0.307
1.365
−0.11
0.24
−0.029
0.191
−0.15
0.297
Adequate chest return (%)
−0.346
2.443
−0.097
0.227
0.156
0.309
−0.295
1.177
−0.121
0.253
Compression force (%)
0.092
0.223
0.292
1.128
0.083
0.216
0.068
0.206
−0.166
0.33
Adequate pace of CTEs (%)
−0.172
0.342
0.133
0.268
−0.291
1.109
−0.251
0.696
0.137
0.275
Average CTEs per minute
0.036
0.193
−0.289
1.087
−0.092
0.223
0.067
0.206
0.057
0.201
Firefighter
Heart rate start
−0.174
0.348
−0.205
0.445
−0.127
0.26
−0.046
0.196
−0.012
0.188
Final heart rate
−0.055
0.2
−0.046
0.196
−0.209
0.461
0.192
0.401
0.021
0.19
PSE scale
−0.088
0.22
−0.154
0.305
0.023
0.19
0.203
0.439
−0.062
0.203
PSE scale: perceived exertion scale; sec: seconds. Bold results indicate significant correlations at p > 0.05. Note. “r” corresponds to Pearson’s Bayesian correlation and “BF₁₀” corresponds to the Bayes factor, where BF₁₀ between 3 and 10 (moderate); BF₁₀ between 10 and 30 (strong); BF₁₀ between 30 and 100 (very strong); BF₁₀ > 100 (extreme).
