Table 4.

Positive predictive value (PPV) of HPV test for CIN2+ and CIN3+ in women who had undergone colposcopy after a positive HPV test on self-collected sample and in women with concordant results of both HPV tests. Results are stratified by the level of protection due to previous screening

	Number of women with				PPV
	all	colposcopy	CIN2+	CIN3+	CIN2+	CIN3+
Positive result of HPV test on self-collected sample
all women	430	333	40	32	12.0%	9.6
women with medium protection	279	223	18	12	8.1%	5.4
women with no/low protection	151	110	22	20	20.0%	18.2
Concordant∗
all women	na∗∗	146	34	29	23.3%	19.9
women with medium protection	na	97	14	10	14.4%	10.3
women with no/low protection	na	49	20	19	40.8%	38.8

^∗Results of HPV tests were concordant, if HPV test on self-collected sample as well as sample taken by a practitioner were positive.

^∗∗Results not available (na), since only women with colposcopy had a sample taken by a practitioner.