Table 2 Number of follicles visualized at OPU and of recovered oocytes and their quality in summer and winter

Numbers

Total follicles

23.9 ± 3.9

18.9 ± 4.

0.57

Total oocytes

13.5 ± 0.2

9.3 ± 1.6

0.36

Grade 1

1.09 ± 0.5

6.4 ± 1.7

< 0.01

Grade 2

3.2 ± 1.3

1.4 ± 0.7

0.13

Grade 3

5.1 ± 1.5

0.6 ± 0.6

0.64

Grade 4

4.1 ± 1.1

1.2 ± 0.7

0.09

Percentage

Grade 1

7.1 ± 2.5

57.8 ± 12.0

< 0.01

Grade 2

26.3 ± 8.4

11.4 ± 5.6

0.05

Grade 3

36.1 ± 5.4

8.3 ± 8.3

< 0.01

Grade 4

30.5 ± 5.5

12.3 ± 5.2

0.04