I have 400 patients and I apply 4 tests to all of them. This gives me a number of positive and negative for each test. I want to compare the tests 2 by 2 to find out if there is any statistically significant difference between them.
Test Pos Neg 1 100 300 2 150 250 3 160 240 4 200 200
What statistical test I can use to determine this? I'm very new to the field so I appreciate any pointers.