在另一项研究中，瑞典研究人员评估了1276例院外心脏病发作的患者，这些患者中的一半行传统的心肺复苏术，另一半仅行胸外按压术。

In the second study, Swedish researchers evaluated 1,276 patients with suspected out-of-hospital heart attacks, assigning half to conventional CPR and half to compression-only.

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家长急救知识和技能的掌握情况分别为：包扎术63名(占43.8%)，人工呼吸44名(占30.6%)，清创术35名(24.3%)，胸外心脏按压19名(占13.2%)。

Parents' emergency knowledge and skills were as follows: 63 (43.8%) parents knew bandaging, 44 (30.6%) artificial respiration, 35 (24.3%) debridement, and 19 (13.2%) extra thoracic compression.

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