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Table 1 Raw data from national surveys of obstetric anesthesia units in Israel, showing the annual delivery numbers and the epidural and cesarean delivery rates (%) with the calculated OAAI

From: Comparison of the obstetric anesthesia activity index with total delivery numbers as a single denominator of workload demand in Israeli maternity units

2005 2007
Deliveries (no./year) Epidural rate (%) Cesarean rate (%) OAAI Deliveries (no./year) Epidural rate (%) Cesarean rate (%) OAAI
12,000 20 18 12.92 12,000 27 19 14.93
9,500 93 27 23.79 10,000 85 26 23.61
9,000 60 12 14.20 11,000 50 8 14.01
9,000 90 25 21.73 10,000 90 25 24.14
8,600 55 23 15.61 8,000 55 23 14.52
6,000 24 17 6.65 6,000 40 18 8.44
6,000 45 10 7.46 7,300 45 27 13.03
5,500 70 25 11.58 5,500 70 25 11.58
5,500 54 19 9.16 5,782 54 15 9.02
5,300 63 20 9.84 5,600 56 18 9.43
5,000 65 20 9.45 5,000 70 18 9.60
4,500 35 22 6.59 4,500 60 23 8.53
4,500 60 18 7.88 5,440 53 18 8.87
4,500 22 18 4.91 4,200 20 19 4.68
4,500 40 22 6.95 4,000 45 23 6.60
4,000 35 17 5.18 3,900 27 28 6.05
3,700 40 10 4.26 4,398 38 10 4.96
3.200 60 18 5.60 3,188 67 20 6.10
2,700 22 22 3.39 2,788 26 18 3.28
2,690 20 20 3.10 2,969 20 22 3.56
2,600 4 16 1.89 2,000 15 18 1.98
2,500 68 20 4.85 3,500 74 24 7.50
2,350 50 18 3.72 2,548 49 23 4.36
1,300 10 20 1.28 2,000 10 20 1.97
900 70 23 1.85 1,000 75 24 2.16