Table 1 Mean values of placental thickness (cm) in 2^nd trimester 15–26 weeks (63 subjects)

15

4 (6.3%)

2.06 ± 0.37

16

1 (1.6%)

2.34

18

7 (11.1%)

2.01 ± 0.23

19

10 (15.9%)

2.14 ± 0.40

20

12 (19%)

2.08 ± 0.12

21

9 (14.3%)

2.52 ± 0.47

22

5 (7.9%)

2.28 ± 0.43

23

4 (6.3%)

2.71 ± 0.53

24

4 (6.3%)

2.57 ± 0.34

25

4 (6.3%)

2.54 ± 0.39

26

3 (4.8%)

3.07 ± 0.18

Total

63 (100%)

2.31 ± 0.43