公卫人

 找回密码
 立即注册

QQ登录

只需一步,快速开始

查看: 127|回复: 0

[分享] 信度研究Reliability Studies样本量计算

[复制链接]
alian 发表于 2020-5-22 18:18:25 | 显示全部楼层 |阅读模式

注册后推荐绑定QQ,之后方才可以使用下方的“用QQ帐号登录”。

您需要 登录 才可以下载或查看,没有帐号?立即注册

x
Planning a validation study of a questionnaire or measurement tool requires consideration for testing the validity and reliability aspects of the measurement tool. When it comes to the reliability aspect, a number of commonly used statistical coefficients such as Cronbach’s alpha, intraclass correlation, kappa and Pearson’s correlation coefficients would be considered to provide empirical evidence of the reliability of the tool during the validation process. To ensure that the reliability is accurately assessed, a researcher must consider the sample size requirement for the statistical analyses. In this article, I will introduce a newly developed web-based sample size calculator, which includes the ability to calculate the sample sizes of these four important coefficients. I will also show how to use the calculator for each of the coefficients.
) n; a& }2 f( F: I. R
( a' ^, H. W, |( R. C% _/ v# t5 H
, |/ M; d$ n6 S0 rPearson's Correlation. N4 @2 l" Z9 p% I% a7 q/ g9 r
https://wnarifin.github.io/ssc/sscorr.html7 @' ?% u" S1 w" Y& o
5 Y4 x* p. p, B7 L! V6 y& y. j' b  y
Cronbach's alpha. o7 ~( e4 j: t* Q
https://wnarifin.github.io/ssc/ssalpha.html- Q1 i$ J- y7 H3 o1 z3 v
& H( p3 h; N/ T* ~( g6 K+ x
Intraclass Correlation Coefficient (ICC)
' M# W- a$ N8 f# ^https://wnarifin.github.io/ssc/ssicc.html
3 X6 N$ F5 f7 H1 b
( t2 c" m6 y3 z9 AKappa (2 raters): w* r0 J- y" ?5 F" v# g
https://wnarifin.github.io/ssc/sskappa.html& e. _- J5 a5 q3 U: ]3 d
& R. V* q; _" ]6 w0 N4 m
Sample size for animal study: u: d- i# z  v& \, Q8 F* f$ a
https://wnarifin.github.io/ssc/ssanimal.html& S$ U" \5 l, d% a  [" O
& q3 l5 V* A$ C2 b  M
Suggested reference:
$ X+ W! ^& @, E. vAPA: Arifin, W. N. (2020). Sample size calculator (web). Retrieved from http://wnarifin.github.io
% }* g+ A4 c' @, D0 x  QVancouver: Arifin WN. Sample size calculator (web) [Internet]. 2020 [cited 22 May 2020]. Available from: http://wnarifin.github.io3 U; F: R0 r# W4 L1 {+ ?! X

/ b; O1 G# V3 U+ ^8 k. u& |; l

EIMJ20181003_08.pdf

3.84 MB, 下载次数: 1, 下载积分: 钢镚 -1 分

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

充值|至尊会员|接种|公卫人 ( 沪ICP备06060850号-3 )

GMT+8, 2020-5-31 14:52 , Processed in 0.112106 second(s), 37 queries , Gzip On.

Powered by Discuz! X3.4

Copyright © 2001-2020, Tencent Cloud.

快速回复 返回顶部 返回列表