Table 3. Number of patients found positive by DENV.

All RT-PCR performed after extraction from RDT or filter paper and from neat serum for 99 patients admitted at Mahosot Hospital.

A	Serum on RDT	Neat serum
		Positive		Negative	Total
	Positive	41		1	42
	Negative	7		50	57
	Total	48		51	99
	Overall agreement (95%CI): 91.9 (84.7–96.4)%
	Positive agreement (95%CI): 85.4 (72.2–93.9)%
	Negative agreement (95%CI): 98.0 (89.6–99.9)%
B	Whole blood on RDT	Neat serum
		Positive		Negative	Total
	Positive	34		3	37
	Negative	14		48	62
	Total	48		51	99
	Overall agreement (95%CI): 82.8 (73.9–89.7)%
	Positive agreement (95%CI): 70.8 (55.9–83.0)%
	Negative agreement (95%CI): 94.1 (83.8–98.8)%
C	Serum on filter paper		Neat serum
			Positive	Negative	Total
	Positive		34	0	34
	Negative		14	51	65
	Total		48	51	99
	Overall agreement (95%CI): 85.9 (77.4–92.0)%
	Positive agreement (95%CI): 70.8 (55.9–83.0)%
	Negative agreement (95%CI): 100 (93.0–100)%
D	Whole blood on filter paper	Neat serum
		Positive		Negative	Total
	Positive	35		0	35
	Negative	13		51	64
	Total	48		51	99
	Overall agreement (95%CI): 86.9 (78.6–92.8)%
	Positive agreement (95%CI): 72.9 (58.2–84.7)%
	Negative agreement (95%CI): 100 (93.0–100)%

A: Serum on RDT compared to neat serum extraction. B: Whole blood on RDT compared to neat serum extraction. C: serum on filter paper compared to neat serum extraction. D: Whole blood on filter paper compared to neat serum extraction.