Group A

Group B

X²

p

Cycle 1

2 (2.9%)

5 (7.1%)

1.35

0.24 (NS)

Cycle 2

2 (2.9%)

3 (4.3%)

0.20

0.64 (NS)

Cycle 3

3 (4.3%)

6 (8.6%)

1.06

0.30 (NS)

Cycle 4 or more

1 (1.4%)

4 (5.7%)

1.86

0.17 (NS)

Cumulative rate

8 (11.4%)

18 (25.7%)

4.72

0.030^* (S)