Table 1.

Truncated cut points of different measures to predict cesarean section and corresponding test value indices

Cut point	Sensitivity (%)	Specificity (%)	Correctly classified (%)
Bishop score
≥2	80.7	4.2	26
≥3	71.9	11.2	28.5
≥4a	57.9	28.7	37
≥5	36.8	47.6	44.5
≥6	12.3	85.3	64.5
Cervical length
≥16	78.9	39.9	51
≥17	75.4	53.2	59.5
≥18	68.4	58	61
≥19a	66.7	65	65.5
≥20	61.4	69.9	67.5
≥21	50.9	80.4	72
≥22	50.9	82.5	73.5
Posterior cervical angle
≥114	56.1	21.7	31.5
≥115	52.6	22.4	31
≥116	49.1	30.1	35.5
≥117a	45.6	33.6	37
≥118	42.1	37.1	38.5
≥119	35.1	42.7	40.5
≥120	35.1	53.8	48.5

Note:

^aCut points giving the most appropriate test values.