what is the significance of P value in medical research ?
2007-03-01 05:49:38 · 3 answers · asked by Husam S 2 in Science & Mathematics ➔ Medicine
In statistical test p is the probability to have a wrong answer.
Usually you take p<0.05 this meaning you have less than one chance over 20 to be wrong
2007-03-01 06:18:49 · answer #1 · answered by maussy 7 · 0⤊ 0⤋
That's what it measures. Statistical significance. With a P value of 0.5, the results of the test are as likely to be due to statistical chance as to an actual difference in outcome. This is different from clinical significance. When testing, say, two drug treatments, there can be a difference in outcome that's strongly statistically significant, with a P value, say, of .001, but the outcome is meaningless in terms of real-world applicability. You can give me a million dollars every year consistently for a decade, and give somebody else a million and one, and the difference will be very, very real, but I won't mind.
2007-03-01 09:10:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Is this in any way similar to the 95% confidence statistic?
2007-03-01 07:13:09 · answer #3 · answered by officerbrother 2 · 0⤊ 0⤋