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Table 2 Hospital volumes and O/E ratios

From: Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases

  

O/E ratios

hospital

n. deliveries

Model 1

Model 2

Model 3

Model 4

1

3000

1.23

1.22

1.25

1.25

2

1710

1.22

1.22

1.25

1.24

3

1513

0.98

0.98

1.01

1.00

4

473

1.30

1.30

1.40

1.40

5

1869

0.98

0.98

1.09

1.07

6

1914

0.97

0.97

1.02

1.02

7

1558

1.18

1.18

1.25

1.24

8

510

1.39

1.38

1.44

1.43

9

3735

0.68

0.68

0.71

0.71

10

1364

0.83

0.83

0.84

0.82

11

1085

0.66

0.66

0.74

0.73

12

2501

1.09

1.08

1.09

1.08

13

6408

0.92

0.92

0.89

0.89

14

2315

1.16

1.16

1.15

1.15

15

1289

0.98

0.99

0.99

1.05

16

1687

0.69

0.69

0.74

0.79

17

3271

1.05

1.05

1.02

1.02

18

2337

0.76

0.76

0.78

0.78

19

2033

0.77

0.77

0.79

0.79

20

3456

1.04

1.04

1.05

1.04

21

4837

0.75

0.75

0.76

0.76

22

6195

1.04

1.04

0.98

0.98

23

2370

0.98

0.98

1.05

1.05

24

781

1.41

1.40

1.35

1.34

25

5520

1.17

1.17

1.17

1.17

26

5402

0.89

0.89

0.89

0.88

27

7240

1.03

1.03

1.06

1.06

28

7916

1.18

1.18

1.12

1.13

29

3285

0.91

0.92

0.87

0.87