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# 協助英文文法修正

The results from the pilot study tocalculate the experimental group and the control group pressed immediately, 15minutes and 30 minutes and before pressing the average and standard deviationof the difference between the systolic blood pressure, systolic blood pressuredifference between the two groups will be the average and standard deviation ofsubstitution GPower 3.1.2 version of the software (Faul, Erdfelder, Buchner,& Lang, 2009), set the t-test, Means: Difference between independent means(two groups), Two tail, α value is set to 0.05 and Power (1-β) is 0.8 estimateof the required number of cases closed case. Each measurement time point of theestimated number of samples were 210,60,18 needs of people, this study selected15 minutes after the effectiveness of compressions, the estimate of the numberof samples to be 60 people, plus the estimated loss rate of approximately 20%of cases Therefore, the total number of cases is estimated at close to 80people. Therefore, this study who completed the entire experimental group andthe control group of 40.

2 個已更新項目:

，加上預估個案之流失率約20%，因此總收案人數估計為80人。所以本研究完成全程者，實驗組及對照組各40位。

### 1 個解答

• 6 年前
最佳解答

由先驅研究結果，計算實驗組與對照組按壓後立即、15分及30分與按壓前收縮壓差之平均數與標準差，將兩組收縮壓差之平均值與標準差代入GPower 3.1.2版軟體（Faul, Erdfelder, Buchner, & Lang, 2009），設定t-test、Means:Difference between independent means(two groups)、Two tail、α值訂定為0.05及Power（1-β）值為0.8，估算所需收案之個案數。各測量之時間點所估算需要之樣本數分別為210、60、18人，本研究選取按壓後15分鐘的成效，所估算之樣本數需60人，加上預估個案之流失率約20%，因此總收案人數估計為80人。所以本研究完成全程者，實驗組及對照組各40位。

By consulting pioneering studies, we calculated the mean and standard deviation of the systolic pressure difference of the experiment group and control group at the time of pressing immediately, pressing after 15 minutes, and pressing after 30 minutes. We analyzed the data with the softward GPower ver3.1.2 （Faul, Erdfelder, Buchner, & Lang, 2009), and setted up the following parameters: t-test, Means:Difference between independent means(two groups), Two tail, α=0.05, Power（1-β)=0.8, case numbers needed. The timesets acquire 210, 60, 18 cases separately. Our research selects the result of pressing after 15 minutes, which needs roughly 60 cases. Considering an outflow rate of 20%, the total number of cases was added up to 80, both having 40 people in the two groups.

參考資料： 侯老師國中週刊