Table 1 Distribution of birthweight by gestational age (weeks) for twins according to chorionic placentation

24

4

600

640

708

650

60.00

2

555

575

595

575

35.36

25

8

657

725

815

733.75

71.30

2

681

725

769

725

77.78

26

8

709

840

1018

860

147.45

4

698

740

775

737.5

45.00

27

2

756

780

804

780

42.43

12

660

840

1091

889.17

215.43

28

6

830

1120

1375

1108.33

264.08

12

610

1015

1205

987.5

230.26

29

26

785

1125

1300

1076.92

195.44

16

1060

1265

1425

1243.75

176.74

30

18

1052

1270

1503

1263.89

182.92

26

1130

1285

1550

1304.23

220.53

31

18

1075

1400

1645

1387.22

275.66

50

1189

1500

1823

1504.2

275.19

32

54

1212

1550

1947

1578.89

306.84

80

1104

1580

1873

1531.62

322.79

33

54

1258

1680

1887

1633.7

303.12

84

1383

1750

2278

1820.82

380.85

34

70

1489

1922.5

2302

1944.5

332.03

136

1520

1885

2255

1891.92

306.12

35

90

1550

1950

2301

1933.89

301.72

178

1667

2025

2560

2060.86

344.94

36

134

1550

2250

2585

2143.02

416.99

236

1645

2200

2570

2164.37

391.02

37

136

1775

2240

2790

2248.53

430.99

322

1840

2350

2800

2340.81

384.96

38

146

1895

2400

2895

2419.79

397.78

276

1985

2450

3040

2469.31

409.96

39

82

1830

2350

3000

2349.88

419.67

192

1825

2500

3094

2485.16

470.86

40

42

1924

2300

2886

2364.52

423.32

44

2109

2565

3024

2576.82

407.95

41

16

1395

1960

2650

2013.75

553.98

16

1925

2470

2895

2410

429.33

6

1960

2850

3030

2613.33

524.96