輝瑞疫苗90%有效 逾4萬人試驗中僅94人受 - 股票
By Linda
at 2020-11-09T21:31
at 2020-11-09T21:31
Table of Contents
疫苗的效力分析公式
https://i.imgur.com/GJWRjWL.jpg
舉個例子
原本預計期中分析32人確診,效力至少要76.9%
因此疫苗組只能最多6個確診,其他26個都是placebo組
(26-6)/26=76.9%
現在分析94人,效力90%的話則為
placebo組:疫苗組=86:8
(86-8)/86=90.7% (推文我算錯,不是90:4XD)
這個分析是當所有受試者(一半placebo、一半疫苗)
確診累計達到指定人數時,分析兩組間的比例
並非指所有受試者只有這些人感染
不能這樣說,也不能這樣比
因為,可能只是還沒感染
但當累計一定感染者後,兩組間的比例就可以推算效力
43000人中只有94人感染是不正確的說法
如果這個說法成立的話
21500人(疫苗組)中只有8個人感染
這樣聽起來是不是更威了?
但根本不能這樣看XD
拍謝,效果很好XD
累計94個人感染,其中打疫苗的只有8個,其他86個都是沒打疫苗的,可見打疫苗的幫助
很大
疫苗還有一個很大的議題是保護力持續的時間
這個目前仍是未知數
再者是病毒變異的情形
(目前仍沒證據顯示病毒產生不同血清型了,但,疫苗對於病毒來說也是個"阻力",可能
造成人擇篩選,容易被疫苗壓制的原生型處處碰壁,不易被壓制的突變型就冒出頭來了)
但這已經是個很好的消息,可以增添不少信心
而且也可為其他疫苗引路(似乎沒有ADE的問題),那到時可能很多種疫苗都會成功
--
https://i.imgur.com/GJWRjWL.jpg
舉個例子
原本預計期中分析32人確診,效力至少要76.9%
因此疫苗組只能最多6個確診,其他26個都是placebo組
(26-6)/26=76.9%
現在分析94人,效力90%的話則為
placebo組:疫苗組=86:8
(86-8)/86=90.7% (推文我算錯,不是90:4XD)
這個分析是當所有受試者(一半placebo、一半疫苗)
確診累計達到指定人數時,分析兩組間的比例
並非指所有受試者只有這些人感染
不能這樣說,也不能這樣比
因為,可能只是還沒感染
但當累計一定感染者後,兩組間的比例就可以推算效力
43000人中只有94人感染是不正確的說法
如果這個說法成立的話
21500人(疫苗組)中只有8個人感染
這樣聽起來是不是更威了?
但根本不能這樣看XD
拍謝,效果很好XD
累計94個人感染,其中打疫苗的只有8個,其他86個都是沒打疫苗的,可見打疫苗的幫助
很大
疫苗還有一個很大的議題是保護力持續的時間
這個目前仍是未知數
再者是病毒變異的情形
(目前仍沒證據顯示病毒產生不同血清型了,但,疫苗對於病毒來說也是個"阻力",可能
造成人擇篩選,容易被疫苗壓制的原生型處處碰壁,不易被壓制的突變型就冒出頭來了)
但這已經是個很好的消息,可以增添不少信心
而且也可為其他疫苗引路(似乎沒有ADE的問題),那到時可能很多種疫苗都會成功
--
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