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Table 1 Demographic information of patients and laboratory outcomes

From: The effects of daily meteorological perturbation on pregnancy outcome: follow-up of a cohort of young women undergoing IVF treatment

Characteristics

Spring (n = 255)

Summer (n = 241)

Autumn (n = 194)

Winter (n = 170)

P

Fertilization methoda

 IVF (n)

134

139

102

81

NS

 Other (n)c

121

102

92

89

Age (year)b

32(31–34)

32(31–34)

32(31–33)

32(31–34)

NS

Gn dose (IU), totalb

2700(2250–3600)

2700(2250–3600)

2700(2250–3600)

2887.5(2250–3750)

NS

Stimulation period (day)b

11(10–12)

11(10–12)

11(10–12)

11(10–12)

NS

LH baselineb, d

1.9(1.2–3.0)

2.1(1.3–3.2)

1.8(1.2–2.8)

1.8(1.2–2.5)

NS

LH at triggerb, d

2.2(1.4–3.3)

2.2(1.5–3.5)

2.1(1.4–3.1)

1.8(1.3–2.7)

NS

E2 baselineb, d

53(44–77.8)

55(44–85)

49(44–71.8)

49(44–73.8)

NS

E2 at triggerb, d

12,706(8042–21,297)

11,556.5(7970.3–17,127.5)

11,316(7834.3–17,988.3)

10,576(6598.8–17,395)

NS

Day3 FSHb, d

6.9(5.9–8.1)

6.9(5.8–7.9)

6.8(5.8–7.9)

6.9(6.3–8)

NS

Infertility diagnosisa

 Tubal factor

133

132

107

85

NS

 Pelvic Adhesions

110

110

90

62

NS

 Uterine factor

5

2

5

2

NS

 Male Factor

110

106

86

83

NS

 Anovulation

33

32

24

20

NS

 Endometriosis

47

48

34

26

NS

 Sexual Dysfunction

3

2

2

6

NS

 Immunological

1

0

1

0

NS

 Unexplained

9

8

8

8

NS

Oocyte retrieved (n)b

11(8–14)

10(7–13)

10(7–14)

10(7–13)

NS

Fertilized oocyte (n)b

6(4–9)

6(4–8)

6(4–8)

5.5(4–8.75)

NS

Available embryos (n)b, e

3(2–6)

3(2–5)

3(2–5.8)

3(2–4)

NS

Transferred embryo gradeb, d, f

4(4–4)

4(4–4)

4(4–4)

4(4–4)

NS

  1. NS Non-significant
  2. aP value was calculated using Chi-square test
  3. bP value was calculated using Kruskal-Wallis test
  4. cOther fertilization methods include ICSI, MESA, TESA
  5. dMissing observations were removed (4 in LH baseline, 1 in E2 baseline, 7 in both LH and E2 at trigger and 38 in FSH, 4 in Transferred embryo grade)
  6. eAvailable embryos are the sum of frozen and transferred embryos
  7. fTransferred embryo grade of a cycle is the highest grade of all transferred embryo