| save life | 0.48 |
| involve chest compressi… | 0.41 |
| stand for cardiopulmona… | 0.40 |
| maintain vital blood fl… | 0.34 |
| combine chest compressi… | 0.32 |
| keep person | 0.30 |
| assist party | 0.29 |
| flow to the brain | 0.28 |
| extend the window of ti… | 0.28 |
| double a person's chanc… | 0.25 |
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| necessary | 0.61 |
| effective | 0.57 |
| important | 0.51 |
| difficult | 0.44 |
| successful | 0.42 |
| better than none | 0.35 |
| useless | 0.33 |
| beneficial | 0.32 |
| futile | 0.28 |
| valid | 0.28 |
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| performed | 0.59 |
| continued | 0.47 |
| started | 0.44 |
| performed in effort | 0.41 |
| attempted | 0.39 |
| taught | 0.38 |
| stopped | 0.36 |
| provided | 0.27 |
| easy to learn | 0.27 |
| unlikely to restart the… | 0.25 |
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