S05 Screening & Diagnostic Tests (FILLED IN)

There are few if any tests that are 100 sn 100 sp but

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: o measure: a)  b)  c)  d)  Construct a 2x2 table for observed (dis)agreement Calculate % observed agreement Calculate % expected agreement (due to chance) Enter values into final formula CalculaUng Kappa a)  Construct a 2x2 table for observed (dis)agreement # raUngs Observer #2 Observer #1 +ve - ve +ve 12 6 18 - ve 7 15 22 19 21 40 CalculaUng Kappa b) Calculate % observed agreement # raUngs Observer #2 Observer #1 +ve - ve +ve 12 6 18 - ve 7 15 22 19 21 40 = a + d / n = 12 + 15 / 40 = 27 / 40 = 67.5% CalculaUng Kappa c) Calculate % expected agreement Observer #2 Observer #1 +ve - ve +ve 12 6 18 - ve 7 15 22 19 21 40 * You will not need to remember this = [(a+b)*(a+c)/n + (c+d)*(b+d)/n] / n formula, but you will = [(18)*(19)/40 + (22)*(21)/40] / 40 need to be able to recognize it and know = (8.55 + 11.55) / 40 when to use it! = 50.25% C...
View Full Document

This document was uploaded on 01/14/2014.

Ask a homework question - tutors are online