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Fig. 2. Bar chart shows peritubal adhesions revealed by
hysterosalpingography compared with laparoscopy using both adopted criteria in
patent tubes. Histogram of sensitivity (Sens), specificity (Spec,)
false-negative (FN), false-positive (FP), positive predictive value (PPV),
negative predictive value (NPV), and overall accuracy (Acc) rates shows high
diagnostic precision of hysterosalpingography when second criterion is
applied. Light gray bars represent first criterion; dark gray bars represent
second criterion.