BMC Infectious Diseases

Table 2 Screening group (CIN 2+ or worse)

From: Evaluation of the effectiveness of high-risk human papilloma self-sampling test for cervical cancer screening in Bolivia

Cytology^a	N	Negative reference test	Positive reference test	PPV %	NPV %	95% IC
Positive	26	18	8	30		13–48
Negative	257	247	10		96	93–98
Total	283
Sensitivity			44%			21–67
Specificity		93%				90–96
VIA		Negative reference test	Positive reference test	PPV %	NPV %	95% IC
Positive	68	44	24	35		24–46
Negative	294	294	0		100
Total	362
Sensitivity			100%
Specificity		86%				83–90
HPV^b	N	Negative reference test	Positive reference test	PPV %	NPV %	95% IC
Positive	87	71	16	18		10–26
Negative	259	254	5		98	96–99
total	346
Sensitivity			76%			57–94
Specificity		78%				73–82

^acytology lost samples = 79
^bHPV lost samples = 16

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ISSN: 1471-2334

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