| Test 2 positive | Test 2 negative | Row total | |
| Test 1 positive | a | b | a + b |
| Test 1 negative | c | d | c + d |
| Column total | a + c | b + d | n |
▼生物統計學(Biostatistics)
顯示/隱藏(show/hide)
| Test 2 positive | Test 2 negative | Row total | |
| Test 1 positive | a | b | a + b |
| Test 1 negative | c | d | c + d |
| Column total | a + c | b + d | n |
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