For faster navigation, this Iframe is preloading the Wikiwand page for 比例危機模型.

比例危機模型

呢篇文 需要熟悉呢方面嘅人幫手寫。 詳情請去討論頁睇。

比例危機模型英文proportional hazards model / Cox model)係生還分析上一種分析「呢啲因素(自變數)會唔會影響到生還時間」嘅方法,可以攞嚟分析「自變數係連續」嘅情況[1][2]

計法

[編輯]

用比例危機模型嘅做法如下:首先,攞住個危機函數 ,想像好似噉嘅式[1]

,當中
  • 係拃相信可以預測生還能力嘅變數;
  • 表示 「有幾能夠影響生還能力」;
  • 係所謂嘅底線危機(baseline hazard),對應「如果啲 數值冚唪唥係 0()嗰陣, 嘅數值」。

有咗呢個噉嘅函數,研究者就可以用好似迴歸分析(regression)噉嘅方法,由數據度估計出啲 嘅值,從而睇吓邊啲 顯著(對 有顯著嘅影響)。

[編輯]
  1. 1.0 1.1 Lin, D. Y., & Wei, L. J. (1989). The robust inference for the Cox proportional hazards model (PDF). Journal of the American statistical Association, 84(408), 1074-1078.
  2. David, C. R. (1972). Regression models and life tables (with discussion). Journal of the Royal Statistical Society, 34(2), 187-220.
{{bottomLinkPreText}} {{bottomLinkText}}
比例危機模型
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?