There was no significant difference in the percent of patients who mastered procedures of metered dose inhaling between 2008 and 2004(27.6% vs 24.8%, P>0.05).

2008年度，能够正确将定量吸入气雾剂吸入步骤进行排序的患者比例（27.6%）与2004年度（24.8%）比较，差异无统计学意义（P>0.05）。

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There was no significant difference in the percent of patients who mastered procedures of metered dose inhaling between 2008 and 2004(27.6% vs 24.8%, P>0.05).

2008年度，能够正确将定量吸入气雾剂吸入步骤进行排序的患者比例（27.6%）与2004年度（24.8%）比较，差异无统计学意义（P>0.05）。

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