Validation of a Vaginal Birth after Cesarean Delivery Prediction Model in Teaching Hospitals of Addis Ababa University: A Cross-Sectional Study

Table 4

Grobman VBAC prediction model outcomes of the predicted compared with the observed VBAC success rate.

Decile group	Number predicted	Number observed	Observed VBAC (%)
0-10	0	0	n/a
10-20	0	0	n/a
20-30	0	0	n/a
30-40	0	0	n/a
40-50	5	3	60
50-60	8	2	25
60-70	25	13	52
70-80	72	36	50
80-90	72	50	69.4
90-100	86	82	95.3

n/a = not applicable.