search for: aravindbm

Sir, I have a problem here while applying chisquare test to the following Data ( below the subject of this mail) ...when I wanted to test the significance using three different free statistical packages, here R, EpiInfo and OpenEpi. *Only OpenEpi accepts the test based on Cochran's Recommendations. * R says " chi squared approximation may be incorrect." Does it mean the same as

Hi friends, I have a doubt reg the application of odds ratio. When evaluating a diagnostic test, what odds ratio I should apply? When I use.. *>oddsratio (X)** * the OR I get is not ad/bc. Thank you. Regards, Dr Manoj Aravind, PG Resident, Dept of Community Medicine, Osmania Medical College, Hyderabad, India. [[alternative HTML version deleted]]

Hi friends, I get different values for McNemar's test in R and SPSS. Which one should i rely on when the p values differ. I came across this problem when i started learning R and seriously give up on SPSS or any other proprietary software. Thank u in advance Output in SPSS follows *Crosstab* hsc Total ABN NE ABN tvs ABN Count 40 3 43 Row % 93.0% 7.0%