Page 171 - Screening for Cervical Cancer: Systematic Evidence Review
P. 171

Chapter III: Results





                           Neg   LR                                                  0.2   0.2   0.3
                                   0.3  0.4  0.1  0.1  0.3  0.1  0.2  0.5  0.3  0.2


                           Pos   LR   15.0  3.6  16.7  4.7  11.3  8.0  1.5  2.4  2.1  4.8  4.0   4.2   3.8




                              NPV  ll     99.6  99.5  99.9  99.0  99.6  98.2  95.5  96.8  96.7  99.2  98.5   98.5   98.6






                              PPV  ll   17.6  4.3  17.2  40.0  15.8  53.0  24.4  13.3  19.0  17.1  23.4   23.3   18.2

                      Performance of Screening HPV* Testing for Detection of High-grade Abnormalities



                              Prev §  1.4  1.3  1.2  12.3  1.6  12.3  17.3  6.0  10.0  4.1  7.2   6.8   5.6





                              Spec ‡  95.1  80.7  94.3  80.2  93.4  89.0  41.3  74.5  61.6  82.6  78.7   79.9   78.2





                           False   Positive  145  245  96  24  556  108  121  52  740  228  1345   1224   1116






                           True   Neg   2801  1024  1586  97  7859  873  85  152  1185  1081  4962   4877   4004





                              Sens †    73.8  68.8  95.2  94.1  74.8  88.4  90.7  61.5  80.9  83.9  84.4   83.7   81.6   †† HIV, human immunodeficiency virus, where “+” indicates participants with HIV infection and “should be” indicates those without infection.






                           False   Neg  11  5  1  1  35   16  4     5     41    9    76   72   56






                           True   Positive   31  11  20  16  104  122  39  8  174  47  410   371   249





                           Total   N   2988  1285  1703  138  8554  1119  249  217  2140  1365  6793   6544   5425






                           Test   Method   SHARP #  I**  HC  II  HC  HC I   (HIV+ †† )   I  HC  HC   II  HC II    (HIV + †† )   HC II**   (HIV - †† )   II  HC  II  HC  Total all HC II   HCII excluding HIV +  HCII in populations with   prevalence <10%   ll  PPV and NPV, positive and negative predictive value.  ¶  Pos LR and Neg LR, positive and negative likelihood ratio.  #  SHARP, SHARP detection system.








                      Table 8.   Article   Cuzick et al.,   1999 21    Petry et al.,   1999 61    Shiffman et   al., 2000 65    Womack et   al., 2000 63    Womack et   al., 2000 62    Wright et al.,    2000 64    *HPV, human papilloma virus.   † Sens, sensitivity.   ‡ Spec, specificity.   § Prev, prevalence.   **HC, hybrid capture.   ‡‡ Physician collected samples.







                                                                                 71
   166   167   168   169   170   171   172   173   174   175   176