Table 5 Concordance of cytological analysis with the gold standard according to each device for self-sampling.

From: Validity and acceptance of self vs conventional sampling for the analysis of human papillomavirus and Pap smear

Self-sampling devices

Results of the cytological analysis

Conventional sampling

Observed concordance for distinct comparison (italics)*

Sensitivity (95% CI)

Specificity (95% CI)

Kappa coeficient (95%CI)

Weighted Kappa*

Negative

Positive

ASC-US or LSIL

ASC-H, AGC or HSIL

Total

Viba-Brush®

Negative

22 (47.8%)

7 (15.2%)

7 (15.2%)

0 (0.0%)

29 (63.0%)

35 (76.1%)

65.0% (40.8%-84.6%)

84.6% (65.1%-95.6%)

0.51 (0.25–0.76)

Positive

4 (8.7%)

13 (28.3%)

11 (23.9%)

2 (4.3%)

17 (37.0%)

ASCUS or LSIL

4 (8.7%)

13 (28.3%)

11 (23.9%)

2 (4.3%)

17 (37.0%)

33 (71.7%)

0.43 (0.19–0.68) 0.46

ASC-H, AGC or HSIL

0 (0.0%)

0 (0.0%)

0 (0.0%)

0 (0.0%)

0 (0.0%)

Total

26 (56.5%)

20 (43.5%)

18 (39.1%)

2 (4.4%)

46 (100%)

Mía by XytoTest®

Negative

22 (47.8%)

9 (19.6%)

9 (19.6%)

0 (0.0%)

31 (67.4%)

33 (71.7%)

55.0% (31.5%-76.9%)

84.6% (65.1%-95.6%)

0.41 (0.15–0.67)

Positive

4 (8.7%)

11 (23.9%)

9 (19.6%)

2 (4.3%)

15 (32.6%)

ASCUS or LSIL

4 (8.7%)

10 (21.7%)

8 (17.4%)

2 (4.3%)

14 (30.4%)

30 (65.2%)

0.30 (0.06–0.55) 0.36

ASC-H, AGC or HSIL

0 (0.0%)

1 (2.2%)

1 (2.2%)

0 (0.0%)

1 (2.2%)

Total

26 (56.5%)

20 (43.5%)

18 (39.1%)

2 (4.3%)

46 (100%)

  1. Coincidental results between samples are in bold.
  2. ASC-US atypical squamous cells of undetermined significance, LSIL low-grade squamous intraepithelial lesion, ASC-H atypical squamous cells, cannot exclude high-grade intraepithelial lesion, AGC atypical glandular cells, HSIL high-grade squamous intraepithelial lesion, 95% IC 95% confidence interval.
  3. *Firstly, the values corresponding to the comparison between positive and negative Pap smears are shown, later those among three categories (negative; ASC-US and LSIL; ASC-H, AGC and HSIL).